OCCUPATION AND HEALTH

Study on application of fuzzy comprehensive evaluation in occupational hazard risk assessment of dust in brick and tile enterprises

DAI Yan-yan, TIAN Tian, TANG Dao-bing, NIE Zhi-chao, JIA Hong

2023, 39(11): 1441-1446.

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Objective To construct a dust fuzzy comprehensive evaluation model and analyze rationality and applicability of the model. Methods The evaluation index and its weight for dust occupational hazard risk evaluation were determined and a dust fuzzy comprehensive evaluation model were constructed on the basis of literature review,expert consultation and tomographic analysis. Based on the data of occupational health investigation,occupational health inspection and occupational health physical examination in shale brick manufacturing enterprise from 2019 to 2020,the dust fuzzy comprehensive evaluation model and the comprehensive index method were used to simultaneously evaluate the occupational hazard risks of silica dust of 20 shale brick manufacturing enterprises in Sichuan Province,and the consistency and difference between the evaluation results of the two methods were analyzed. Results A dust fuzzy comprehensive evaluation model were constructed from the four aspects of hazard factor characteristics,contact characteristics,protection characteristics and occupational health management. The results of the evaluation model showed that the risk level of silica dust in four enterprises was grade Ⅳ and that in 16 enterprises was gradeⅤ. By the comprehensive index method,the risk level of silica dust of eight enterprises was grade Ⅳ and that in 12 enterprises was gradeⅤ. The consistency rate of the two methods was 80.0% and the difference was noy statistically significant（Kappa_weighting=0.545, P<0.01）. The difference between the two methods,four companies were assessed as gradeⅤby the dust fuzzy comprehensive evaluation method and grade Ⅳ by the comprehensive index method. Conclusion The dust fuzzy comprehensive evaluation model,considering various factors related to dust hazard risk,determining the weight,and the evaluation results are consistent with the actual situation of each enterprise and have good consistency with the comprehensive index method,which objectively evaluated the overall occupational hazard risk of silicon dust of enterprise.

Simultaneous determination of 16 kinds of mycotoxins in wine by isotope dilution-ultra performance liquid chromatography-tandem mass spectrometry

YANG Xue-li, WANG Meng, LI Jing, LI Fang

2023, 39(11): 1447-1454.

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Objective To establish a method for the simultaneous determination of 16 kinds of mycotoxins in wine by isotope dilution-ultra performance liquid chromatography-tandem mass spectrometry（UPLC-MS/MS）. Methods The wine samples were extracted by acetonitrile,the extract was salted out and dehydration. The supernatant diluted with water 1 ∶ 1 and then filtrated with 0.22 μm polytetrafluoroethylene millipore filter,the matrix effects were efficiently reduced with the stable isotope. The target substances were separated on ACQUITY UPLCBETH C18（100 mm×2.1 mm,1.7 μm）. The multiple reaction monitoring（MRM） mode was used for detection in electrospray ionization with positive and negative ion modes,and quantified by internal standard method. Results There was a good linearity for 16 kinds of mycotoxins within a certain concentration range,the correlation coefficients（r） were greater than 0.999,the limits of detection（LOD） and limit of quantification（LOQ） were 0.1-50.0 μg/kg and 0.3-165.0 μg/kg,respetively. The average recoveries were 62.7%-117.5% at three different levels,and the relative standard deviations were 2.0%-9.5%（n=6）. Conclusion The method is simple,efficient,low-consumption,and has good accuracy and precision,which is uitable for the rapid and accurate quantitative detection of 16 mycotoxins in large quantities of wine.

Investigation on status of social support and mental health of grass-roots police in Beijing

LIU Yang, MU Ya-qin, ZHAO Rong-jia, LIU Hua-qing, FAN Rui-jun, XU Ren

2023, 39(11): 1455-1459.

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Objective To undrstand the status of social support and mental health of grass-roots police in various districts of Beijing,explore the correlation between them and the moderating effect of coping style. Methods A cluster sampling was conducted among the grassroots policemen of police stations,criminal police detachment and traffic team in 16 districts of Beijing. 391 valid questionnaires were collected through a questionnaire survey from February to September 2021 to compare the differences between the psychological state of grass-roots police and the national norm,as well as the differences between different gender,working years and type of police. The effects of social support and coping styles on mental health were analyzed and discussed. Results The factor scores of somatization[（1.66±0.61）points], obsessive-compulsive symptoms[（1.83±0.57）points], depression[（1.71±0.62）points], anxiety[（1.59±0.56）poinys], hostility[（1.69±0.70）points], terror[（1.35±0.50）points], paranoia [（1.65±0.64）poinys] and psychosis[（1.48±0.57）points] of grassroots police in Beijing were significantly higher than the national norms（all P<0.01）. There were statistically significant differences in the scores of self-reporting inventory（SCL-90）, social support and coping style among grass-roots police of different gender, working years and type of police（all P<0.01）. The total score and each factor score of SCL-90 in grassroots police in Beijing were significantly negatively correlated with the score of positive coping（r=-0.196--0.043, all P<0.05）, and positively correlated with the score of negative coping（r=0.195-0.272, all P<0.05）. The objective support,subjective support,support availability and total social support scale of grassroots police in Beijing were significantly negatively correlated with the total score and each factor score of SCL-90（r=-0.419--0.147,all P<0.05）. The positive coping had a positive moderating effect between social support and SCL-90 score（β=0.140,P<0.01）. Conclusion Adopting positive coping style is conducive to enhancing the social support and mental health of grassroots police in Beijing.

Dynamic observation of blood indexes of radiologists in Shenyang City

SHAN Tie-mei, DUAN Xiao-xiao, NA Xiang-jie

2023, 39(11): 1460-1463.

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Objective To discuss the effects of ionizing radiation on peripheral blood,biochemical indexes,lymphocyte micronucleus and chromosome of radiologists. Methods A total of 137 radiologists who underwent four consecutive occupational health examinations in 2014,2016,2018 and 2020 were selected as the radiation group,and 137 health examiners of the same age and sex with no radiation exposure history were selected as the control group. Their peripheral blood white blood cells（WBC）,lymphocytes（LYM）,platelets（PLT）,alanineaminotransferase（ALT）,aspartate aminotransferase（AST）,blood urea nitrogen（BUN）,serum creatinine（Scr）,fasting blood glucose（FBG）,lymphocyte micronucleus and chromosomal examination results were analyzed. Results The WBC count of radiation group in 2020（6.15±1.42）,2018（6.26±1.38） and 2016（6.13±1.36） was lower than that of control group（6.59±1.18）（all P<0.05）. The PLT count of radiation group in 2018（223.39±50.18）,2016（221.68±49.82） and 2014（228.53±49.95） was lower than that of control group（242.47±54.39）（all P<0.05）. The micronucleus rate of lymphocytes in radiation group in 2018[（0.66±0.90）‰] and 2016[（1.17±1.25）‰] was higher than that in control group[（0.41±0.77）‰],and the differences were statistically significant（all P<0.05）. The number of chromosomal abnormalities in radiologists working in the same compartment was higher than that in those working in the other compartment,and the difference between 2020 and 2018 was statistically significant（P<0.05）. Conclusion The ionizing radiation has a certain effect on the blood indexes of radiologists,so it is necessary to strengthen the continuous monitoring of the chromosome of radiologists working in the same compartment.

Plane layout design and effect analysis of nuclear medicine workplace

LIAO Xin, MA Yong-zhong

2023, 39(11): 1464-1468.

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Objective To design and verify the layout zone and ventilation scheme of nuclear medicine workplace,so as to provide basic condition for standardizing the protection of nuclear medicine workplace and safeguarding the radiation safety of nuclear medicine personnel. Methods A nuclear medicine workplace designed and built by a hospital in Beijing during 2019-2022 was taken as the object of investigation and study. The layout and ventilation of the nuclear medicine workplace were designed and evaluated according to relevant regulations and standards by means of site investigating,data retrieving and comprehensive analyzing. Furthermore,the radioactive contamination level and ventilation effect were verified and tested after the workplace is put into operation. Results The layout zone and ventilation design of nuclear medicine workplace were determined. The verification testing results showed that the highest level of radioactive contamination was 6.40 Bq/cm² on the surface of waste buckets,followed by urinals and injection tables,which were 0.70 and 0.50 Bq/cm²,respectively. No obvious radioactive contamination was found on the surface of other facilities,articles and on-site staff in the workplace. The exhaust wind speed of the operation section of the fume hood was 1.0 m/s. The surface radioactive contamination level and ventilation in the nuclear medicine workplace met requirements of the Basic standards for ionizing radiation protection and radiation source safety（GB 18871-2002） and Radiological protection requirements for nuclear medicine（GBZ 120-2020）,respectively. Conclusion The layout zone and ventilation of nuclear medicine workplace are the key to protection design,verification test is effective to maintain the safe operation of the workplace,and the concept of radiation protection should be integrated into every design link to provide reliable protection for the radiation safety of nuclear medicine workplace fundamentally.

Evaluation on occupational hazard control effect in a building materials factory in Fuyang City

LUO Sen-lin, ZHANG Hui, ZHANG Cheng, ZHANG Min, XU Gui-qiang, YU Nan

2023, 39(11): 1469-1472.

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Objective The construction material factory has always been the key industry of occupational hazard control. In order to identify and analyze the types of occupational hazard factors existing in the concrete production line project of a building material factory in Fuyang City of Anhui Province,the occupational hazard control effect of the building material factory was evaluated,and the targeted prevention and control measures were put forward. Methods The occupational health field investigation,engineering analysis and occupational health testing were used to evaluate the occupational hazard control effect of the building materials factory from November to December 2020. Results The main occupational hazard factors in the building materials factory were dust,noise and high temperature. The short term expose concentration-15min of dust（total dust and exhubed dust） of the inspection personnel on the second and third floors of the mixer building did not meet the requirements of national occupational exposure limits of the Determination of dust in the air of the workplace Part 1：Total dust concentration. The short term expose concentration 15 min of total dust was 1.8-2.9 mg/m³,while that of exhubed dust and 0.9-2.1 mg/m³,and the test results of other positions all met the requirements of occupational exposure limits. In view of the points exceeding the standard,the company adopted wet operation,strengthening cleaning,strengthening the maintenance of dust collector and other measures to control,and the results of retesting met the national occupational exposure limit requirements. Conclusion Accoring to the existing occupational hazards,the building materials factory has taken corresponding measures of dustproof and noise prevention,and the overall control effect of occupational hazards is good.

Antigenicity and gene characterization of hemagglutinin genes in Victoria lineage of influenza B virus prevalent in Xinjiang from 2021-2022

CHEN Yuan, ZHANG Xuan, ZHAO Jun, Nigedeli·Alitengsaier, LI Quan-xi, MA Xin

2023, 39(11): 1473-1478.

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Objective To analyze the antigenicity and genetic characteristics of the hemagglutinin（HA） gene in the Victoria lineage of the influenza B virus（BV） prevalent in Xinjiang from 2021-2022. Methods A total of 30 BV strains isolated from 15 influenza surveillance network laboratories in Xinjiang were randomly selected for antigenicity analysis using BV vaccine strain B/Washington/02/2019（2021-2022） recommended by World Health Organization（WHO） as reference,and the whole genome of the above strains was sequenced. The HA gene evolution was analyzed by MEGA X and BioEdit software. Results Compared with vaccine strains,20.00%（6/30） influenza strains were similar strains,and 80.00%（24/30） were low response strains. The HA gene of the 30 influenza strains was closely related to the vaccine strains in terms of evolution,and was characterized by three-deletion sequence 162-164. Compared with vaccine strains,the nucleotide and amino acid homologies were 93.0%-98.9% and 94.0%-98.3%,respectively. There were 10 amino acid mutations in the HA gene of 30 influenza strains and vaccine strains：D129K,R133G,E136R,E198K,A202K,K56T,T73V,Y179H,E183K,and N233D. Conclusions Most of the influenza B strains prevalent in Xinjiang in 2021-2022 are closely related to the vaccine strain on the HA gene,but the vaccine protection effect may be poor due to multiple mutations at the HA amino acid sites. Therefore,it is necessary to carry out antigenicity analysis and gene monitoring of BV strain.

Analysis on correlation between personality traits and coping styles of navy soldiers on Gulf of Aden escort

TIAN Yi-he, WU Jing, ZHANG Lei, YANG Jie, YAN Hong-li, CHU Jing

2023, 39(11): 1479-1483.

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Objective To explore the correlation between personality traits and coping styles of navy soldiers onescort at the Gulf of Aden. Methods In June 2021,the Eysenck personality questionnaire-r short scale Chinese（EPQ-RSC） and the coping style questionnaire（CSQ） were used to perform a questionnaire survey on 157 navy soldiers from a troop,who had just participated in the Gulf of Aden escort. And the data were analyzed. Results Among the factors of coping style,the scores of problem solving and seekinghelp were significantly higher than the Chinese military norms（both P<0.01）,while the scores of self-accusation,fantasy, avoidance and rationalization were significantly lower than Chinese military norms（all P<0.01）. The neurotic dimension of personality traits was significantly correlated with the scores of dimensions of coping styles,the extroversion-introversion dimension was significantly correlated with the scores of the problem solving,seeking help and self-blame dimensions of coping styles,the psychic dimension was significantly correlated with the the scores of problem solving,seeking help dimensions of coping styles,and the lying dimension was significantly correlated with the scores of self-blame,fantasy,withdrawal and rationalization dimensions of coping styles（all P<0.05）. The regression analysis results showed that the personality traits of navy soldiers werethe important factor affecting their coping style. The psychoticism level of navy soldiers significantly positively predicted rationalized coping（β=18.050,P<0.01）,extroversion-introversion level positively predicted problem solving coping（β=3.680,P<0.01） and seeking help coping（β=1.740,P<0.05）,and neuroticism level significantly positively predicted self-blame coping（β=5.480,P<0.01）. Conclusion The personality traits and coping styles are highly correlated among the navy soldiers on the escort,those with higherextraversion levels are more likely to choose mature coping styles,those with higher psychoticism levels tend to choose mixed coping style,and those with higher neuroticism levels are prone to respond immaturely.

Study on correlation between feedback seeking behavior and hospital magnetic level,professional identity among newly recruited nurses in Tianjin

ZHU Yue, WANG Zhang-yi, FANG Zhi-ping, SU Tao, KAN Xiang-ling, PANG Xiao-li

2023, 39(11): 1484-1490.

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Objective To investigate the current status and influencing factors of feedback seeking behavior of newly recruited nurses in Tianjin,analyze its relationship with hospital magnetic level and professional identity,further explore the mediating role of professional identity between hospital magnetic level and feedback seeking behavior,so as to provide reference for managers to formulate intervention measures to promote feedback seeking behavior of newly recruited nurses. Methods A total of 306 newly recruited nurses from six hospitals in Tianjin were selected by using convenience sampling from January to July 2022. The general information questionnaire,essentials of magnetism scale（EOM）,professional identity scale（PIS） and feedback seeking behavior scale（FSBS） were used for questionnaire survey,and the data were analyzed. Results The total scores of feedback seeking behavior,hospital magnetic level and professional identity of newly recruited nurses were （42.14±15.05）,（111.60±28.29） and （89.03±24.46）points,respectively. The total score of feedback seeking behavior of newly recruited nurses was positively correlated with the hospital magnetic level,the total score of professional identity and the scores of each dimension（r=0.582-0.766,all P<0.01）. The education background,attitude to nursing work,hospital magnetic level and professional identity were the main influencing factors of feedback seeking behavior. And professional identity played a partial mediating role between hospital magnetic level and feedback seeking behavior,with the mediating effect of 39.8%（P<0.01）. Conclusions The feedback seeking behavior,hospital magnetic level and professional identity of newly recruited nurses from six hospitals in Tianjin are at the middle level. It is suggested that nursing managers should pay attention to the influence of hospital magnetic environment and professional identity on feedback seeking behavior,actively carry out the establishment of magnetic hospitals,and promote the feedback seeking behavior of newly recruited nurses by improving hospital magnetic level and professional identity,so as to promote their professional development and improve the quality of nursing.

Mental health status and influencing factors of petrochemical workers in Shanghai

ZHOU Xue-song, XU Yan-dan, XU Ming-jia

2023, 39(11): 1491-1495.

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Objective To investigate the mental health status and its influencing factors of front-line workers in petrochemical enterprises of Shanghai. Methods From September 16 to 31,2021,the questionnaire investigation was conducted among front-line workers（excluding administrative personnel） from five petrochemical enterprises in the Shanghai Jinshan Second Industrial Park by suing structural questionnaire through the network platform. The stress status of the subjects was assessed with the perceived stress scale（PSS-10）,the assessed anxiety symptoms of the subjects were assessed with the generalized anxiety disorder（GAD-7）,and the depression symptoms of the subjects were assessed with the patient health questionnaire（PHQ-9）,and the data were analyzed. Results The overall incidence of stress,anxiety and depression in 1 298 workers was 24.9%,27.3% and 28.4%,respectively. The weekly working hours and average daily sleeping hours were the influencing factors of stress in workers（all P<0.05）. The age,weekly working hours and average daily sleeping hours were the influencing factors of anxiety stress（all P<0.01）. The age,weekly working hours and average daily sleeping hours were the influencing factors of depression in workers（all P<0.01）. Conclusion The mental health status of front-line workersfrom five petrochemical enterprises in the Shanghai Jinshan Second Industrial Park is not good,and it is necessary to take targeted intervention measures based on the characteristics of work in the petrochemical industry,reasonably arrange work hours,and provide necessary psychological health services for workers.

Current situation and relationship of lifestyle,work stress and life satisfaction in medical staff under background of normalized epidemic prevention and control

YIN Yu-xuan, NING Lu-ning, ZHANG Xin, YANG Hui, ZHANG Wen-hui, LIU Wei

2023, 39(11): 1496-1501.

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Objective To investigate the status of health-promoting lifestyle（HPL）,work stress and life satisfaction in medical staff and explore their relationships under the background of normalized epidemic prevention and control againts coronavirus disease 2019（COVID-19）. Methods Totally 292 medical workers in Jinan City of Shandong Province were selected as research objects by convenience sampling method from January to March 2022,they were investigated by using the general information questionnaire,health promotion lifestyle scale,scale for occupation stressor and life satisfaction scale,and the data were analyzed. Results Under the background of normalized epidemic prevention and control againts COVID-19,the score of HPL in medical staff was （131.92±28.29）points,and the score of work stress was （94.59±18.58）points. 68.84% of medical workers were satisfied with their lives,and there were statistically significant differences in life satisfaction among medical workers of different age and living style（all P<0.05）. The work stress of medical workers was negatively correlated with HPL and life satisfaction（r=-0.250,-0.289,both P<0.01）,and the HPL was positively correlated with life satisfaction（r=0.533,P<0.01）. The HPL of medical staff played a partial mediating role between work stress and life satisfaction,accounting for 42.56% of the total effect. Conclusion The work stress of medical staff can directly affect their life satisfaction,and it can also indirectly affect life satisfaction through the mediating effect of HPL.

Epidemiological distribution characteristics of road traffic injuries in Yunnan Province in 2020

WU Fu-xian, CHENG Hui-rong, XU Wen, CHEN Yang, MENG Hao-rong, SHI Qing-ping

2023, 39(11): 1502-1506.

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Objective To understand the incidence level and epidemiological characteristics of road traffic injuries in Yunnan Province in 2020,explore the main influencing factors of road traffic injuries,and provide reference for decision-making of road traffic injury prevention and control. Methods The data of patients who visited for the first time due to road traffic injuries in 12 medical institutionsins of four monitoring spots in Yunnan Province in 2020 were collected,the death data were extracted from the cause of death registration report in Yunnan Province in 2020,and the data were collected. Results There were 8 033 cases of road traffic injuries in Yunnan Province in 2020,accounting for 11.89% of the reported injury cases. The incidence of road traffic injury ranked third in all causes of injury visits. There were 6 827 painents died of road traffic injury,accounting for 2.26% of total deaths in Yunnan Province throughout the year. The number of male cases of road traffic injuries（4 415 cases） was higher than that of females（3 618 cases）,wirh the male-to-female ratio of 1.22 ∶ 1. The avarege age was （38.75±0.40）years old,and the avarege age of death cases was （45.22±0.45）years old. The male-to-female ratio of death cases was 294 ∶ 1. The age groups with the highest proportion of road traffic injuries and deaths were both 45-64 year-old group. The occupation with the highest incidence rate of road traffic injuries was agriculture,animal husbandry,fishing,and water conservancy industry（26.25%）,and the occupation with the highest mortality was farmers（80.80%）. The peak season of incidence was August（12.5%）,and peak of mortality appeared in January（9.98%）. The education levels with the highest incidence and mortality rate were both middle school or below（71.23%）. Most of injuries occured at head（26.57%）. Conclusions The incidence and deaths of road traffic injuries in Yunnan Province in 2020 were mainly concentrated in middle-aged people,low educated individuals,personnel engaged in agriculture,animal husbandry,fishing,and water conservancy,and farmers,males were higher than females,and head injuries were the most vulnerable part of injuries. Targeted road traffic safety prevention and control strategies need to be adopted to reduce road traffic safety accidents.

Status and influencing factors of chronic disease prevention and control literacy of residents in Suzhou City

ZHANG Jia-yu, DONG Hao-yu, XU Ying, ZHANG Bo-ya, HUANG Qiao-liang, SUN Hong-peng

2023, 39(11): 1507-1511.

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Objective To understand the status and influencing factors of chronic disease prevention and control literacy of residents in Suzhou City,provide scientific basis for the prevention and control of chronic disease in this area. Methods From August to October 2021,3 000 permanent residents aged 15-69 years old in Suzhou City were selected by probability proportionate to size sampling（PPS） method. The data were analyzed by χ² test,logistic regression analysis,and nomogram. Results A total of 3 000 questionnaires were distributed,of which 225 were lost,2 775 were recovered,and 2 673 were valid,with the effective rate of 96.32%. The proportion of residents with qualified literacy level of chronic disease prevention and treatment was 24.39%,among which the level of chronic disease prevention and control literacy of residents aged 60-69 years old was the lowest,which was 13.49%. The higher the education level and the higher the income,the higher the chronic disease prevention and control literacy level of residents. For the occupations,the level of chronic disease prevention and control literacy of farmers was the lowest,which was 11.99%. The level of chronic disease prevention and control literacy of residents with one or more chronic diseases was lower than that of residents without chronic diseases,which was 16.48% and 17.95% respectively,and the difference was statistically significant（all P<0.05）. The multivariate logistic regression analysis showed that the 15-<45 age group was taken as the reference,and the 45-<60 age group had a relatively high level of literacy in chronic disease prevention and control,with an OR value of 1.797（95%CI：1.268-2.547）. In terms of occupation,taking civil servants as reference,the level of chronic disease prevention and control literacy of medical staff,staff of other public institutions and staff of other enterprises was relatively high,with OR values of 1.806（95%CI：1.019-3.201）,2.620（95%CI：1.325-5.181） and 1.372（95%CI：1.073-1.755）,respectively. The nomogram showed that high age groups,low education level and farmers were the main risk factors for chronic disease prevention and control literacy level. Conclusions The overall level of chronic disease prevention and control literacy of residents in Suzhou City is low,among which the high age group,residents with low education level and farmers have low literacy level. It is suggested that appropriate publicity methods should be adopted to popularize the knowledge and skills of chronic disease prevention,so as to improve the level of chronic disease prevention and control literac of residents in Suzhou City and further prevent and control chronic diseases.

Study oninfluence of adversity quotient level on professional identity of nurses in grade-A tertiary hospitals of Xi'an City

GAO Si-yu, LIU Fang, LI Xiao-wei, ZHANG Qiao-ling, YAO Jie

2023, 39(11): 1512-1515.

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Objective To explore the status quo of professional identity of nurses in grade-A tertiary hospitals of Xi'an City,analyze theinfluence of adversity quotient and demographic factors onit. Methods From April to August in 2022,900 nurses from five grade-A tertiary hospitals of Xi'an City were selected as the research objects,and a cross-sectional survey was conducted by general data questionnaire,adversityquotientscaleand professional identity rating scale. The Pearson method was used to analyze the correlation betweenadversity quotient and professional identity rating scale,and multiple linear regression analysis was used to explore the factors affecting the professional identity of nurses in grade-A tertiary hospitals of Xi'an City. Results The total score of professional identity and adversity quotient of nurses was （114.01±18.75） and （128.40±24.68）points,respectively. The total score of nurses' professional identity was positively correlated with the total score of adversity quotient（r=0.712,P<0.01）,and was positively correlated with each dimension of adversity quotient（r=0.699,0.695,0.704,0.714,all P<0.01）. The multiple linear regression analysis showed that professional title（β=0.073）,average monthly income（β=0.107）,degree of passion for nursing work（β=0.096） and adversity quotient（β=0.557） could explain 86.0% of the total variation of professional identity. Conclusions The level of professional identity of nurses fromgrade-A tertiary hospitals of Xi'an City is at a medium level,and the adversity quotient is at a medium level. The nurses with higher professional title,higher average monthly income,higher degree of passion for nursing work and higher adversity quotient have better professional identity. The school and hospital administrators should strengthen the adversity quotient education of nursing students and nurses,improve their professional ability,enhance their professional sense of accomplishment and identity,so as to achieve the purpose of stabilizing the nurse team.

Analysis on current situation and influencing factors of occupational commitment among 616 pediatric nurses in Guangdong Province

RUAN Jing, CHENJia-ying, ZHONG Xue-mei, PAN Ji-hong

2023, 39(11): 1516-1521.

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Objective To investigate the occupational commitment status of pediatric nurses and analyze the influencing factors. Methods From June to August 2021,a cross-sectional survey of 616 pediatric nurses in Guangdong Province was conducted with general basic data questionnaire,nurse occupational commitment scale and nursing work environment scale,and the data were analyzed. Results The total score of nursing work environment of 616 pediatric nurses was （112.55±22.91）points,and the total score of occupational commitment was （81.96±13.76）points. The dimension of emotional commitment had the highest score,while the opportunity commitment dimension had the lowest score,and 81.3% of nurses had moderate occupational commitment. The multiple linear regression showed marital status,recognition atmosphere in nursing work environment,basic guarantee,career development and adequate manpower were the main influencing factors of occupational commitment in pediatric nurses（all P<0.05）,explaining 54.7% of the total variation. Conclusion The occupational commitment of pediatric nurses in Guangdong Province needs to be improved,and it is suggested that health institution managers should focus on unmarried pediatric nurses,pay attention to opportunity commitment of pediatric nurses,improve their salary,optimize position setting,create a positive incentive working atmosphere,assist nurses to do career development planning,clear career goals to improve the sense of belonging and occupational commitment of pediatric nurses.

Mediating effect of psychological empowerment between structural empowerment and moral distress of nurses in infection department

WANG Li-jingzi, LI Pei, DANG Xiao

2023, 39(11): 1522-1528.

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Objective To explore the status of moral distress,structural empowerment and psychological empowerment of nurses in infection department,ecplore the mediating effect of psychological empowerment between structural empowerment and moral distress. Methods Totally 295 nurses in the infection department from 13 secondary and above hospitals in Shaanxi Province were selected by convenient sampling method from September to Octomber 2021. They were investigated by the moral distress scale,working condition efficacy scale and psychological empowerment scale,and the data were analyzed. Results The total scores[M（P₂₅,P₇₅）] of moral distress,structural empowerment and psychological empowerment in nurses of the infection department were 59.00（36.00,86.00）,59.00（50.00,76.00） and 35.00（28.00,44.00）points,respectively. Nurses' moral distress was negatively correlated with structural authorization and psychological authorization（r=-0.557,-0.619,both P<0.01）,and psychological authorization was positively correlated with structural authorization（r=0.556,P<0.01）. The multiple linear hierarchical regression analysis showed that psychological empowerment played a partial mediating role between structural empowerment and moral distress（P<0.01）,in which the mediating role explained 47.3% of the variance. The structural equation model verified the mediating effect of psychological empowerment,and the mediating effect was 41.16%. Conclusion On the basis of improving the level of nurses' structural authorization,hospital managers should pay attention to psychological authorization,especially in the aspects of work autonomy and work influence,so as to stimulate the personal internal motivation of nurses in infection department,so as to reduce the level of moral distress.

Mediating effect of psychological consistency and positive coping style on emotional intelligence and mental health of undergraduate nursing interns in Sichuan Province

ZHANG Hong-ying, YANG Mao-qiong, LUO Yan-fang

2023, 39(11): 1529-1533.

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Objective To investigate the status of emotional intelligence and mental health of undergraduate nursing interns in Sichuan Province,and the mediating effect of psychological coherence and positive coping style between them. Methods A convenience sampling method was used to select 296 undergraduate nursing interns from 10 grade-A tertiary hospitals in Sichuan Province from April to May 2022. The emotional intelligence scale,mental health scale,psychological coherence scale and positive coping style scale were used as survey instruments. Results The scores of emotional intelligence,mental health,psychological consistency and positive coping style of 296 undergraduate nursing interns were （77.68±12.86）,（11.96±4.48）,（55.54±11.79） and （23.64±5.82）points,respectively. The univariate analysis showed that there were statistically significant differences in the scores of emotional intelligence,psychological consistency,positive coping style and mental health among undergraduate nursing interns with different gender,household registration,whether they were the only child,family type,exercise status and personality types（all P<0.05）. The correlation analysis showed that emotional intelligence was negatively correlated with mental health scores（r=-0.185--0.542,all P<0.01）,the psychological consistency was negatively correlated with mental health scores（r=-0.241--0.469, all P<0.01）,and the positive coping style was negatively correlated with mental health score（r=-0.167--0.364,all P<0.01）. The mediating effect analysis showed that psychological consistency and positive coping style had a chain mediating effect between emotional intelligence and mental health of undergraduate nursing interns,and the mediating effect was 0.075,accounting for 13.79 % of the total effect. Conclusion The mental health of undergraduate nursing interns in Sichuan Province is at a medium level,emotional intelligence has a direct effect on mental health,and strengthening the sense of psychological consistency and positive coping style has a positive effect on promoting the mental health status of undergraduate nursing interns.

Analysis on stress of freshmen majoring in public security

XU Shu-yan

2023, 39(11): 1534-1538.

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Objective To explore the current situation and influencing factors of perceived stress of freshmen majoring in public security,provide reference for early intervention measures. Methods From November to December 2021,the perceived stress scale（PSS-10）,mobile phone addiction scale（MPAS）,brief resilience scale（BRS）,mindful attention awareness scale（MAAS） and general information questionnaire were used to investigate 402 freshmen majoring in public security in the Guangxi Police College,and the data were analyzed. Results The total score of perceived stress among freshmen majoring in public security was（19.02±3.56）points. There were statistically significant differences in the score of perceived stress among freshmen in different gender,only child or not and different living habits（all P<0.01）. The stress perception was negatively correlated with resilience,mindfulness,sense of learning gain and interpersonal harmony（r=-0.53,-0.41,-0.15,-0.16,all P<0.05）,and positively correlated with mobile phone addiction（r=0.43,P<0.05）. The psychological resilience,mindfulness,mobile phone addiction,sleep latency,and only child or not were the influencing factors of stress perception in freshmen majoring in public security（β=-0.361,-0.230,0.222,-0.100,-0.053,all P<0.05）. The toughness played a full mediating role between perceived learning gain and perceived stress,as well as between interpersonal harmony and perceived stress,and the ratio of mediating effect to total effect was 73.23% and 68.97% respectively. Conclusion The stress perception of freshmen majoring in public security is related to resilience,mindfulness and mobile phone addiction,as well as work and rest,so prevention and intervention can be based on positive cognition and behavior,starting from the guidance of mobile phone use,to regular work and rest,cultivation of mindfulness and improve resilience,so as to enhance the quality of learning and life.

Prevalence and influencing factors of sarcopenia among community-dwelling older adults：A meta-analysis

ZHOU Yang, GAO Hui-ting, QU Gui-yu, FANG Xiao-feng

2023, 39(11): 1539-1544.

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Objective To analyze the prevalence and influencing factors of sarcopenia in the community-dwelling older adults. Methods The PubMed,Embase,the Cochrane Library,Web Of Science,CINAHL,VIP,CNKI,Wanfang Data and CBM databases were searched to retrieve the relevant literature on the prevalence and influencing factors of sarcopenia among the elderly in the community from the establishment of the database to July 2021. The meta-analysis on the prevalence and influencing factors of sarcopenia among the elderly in the community was conducted by RevMan 5.3 software. Results A total of 19 cross-sectional studies were included. There were 3 883 cases of senile sarcopenia,the prevalence of sarcopenia among the elderly in the community was 16%[95%CI（10%-22%）]. The subgroup analysis showed that the prevalence of sarcopenia among the elderly in South America and urban areas was higher,while aged 70-<80 years old（OR=3.42,95%CI：1.84-6.43）,aged ≥80 years old（OR=11.42,95%CI：6.89-18.92）,smoking（OR=2.66,95%CI：1.76-4.02）,diabetes mellitus（OR=1.93,95%CI：1.06-3.52）,increased BMI（OR=0.71,95%CI：0.67-0.75）,malnutrition（OR=3.96,95%CI：2.88-5.44） and female（OR=2.55,95%CI：1.84-3.53） were the influencing factors of sarcopenia among the elderly in the community. Conclusions The prevalence of sarcopenia is high among the elderly in the community. Elderly,smoking,diabetes,malnutrition and female are risk factors for sarcopenia among the elderly in the community,increased BMI is a protective factor for the occurrence of sarcopenia among the elderly in the community. The community medical staff should protect the high-risk elderly according to the above intervention factors,so as to reduce the incidence of sarcopenia and improve the adverse outcomes of patients.

Prevalence of insomnia among front-line healthcare workers fighting against COVID-19 during COVID-19 epidemic in China：A meta-analysis

WU Zhi-ting, YUE Qian, LIU Ying-ying, QIU Wei

2023, 39(11): 1545-1549.

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Objective To evaluate the prevalence of insomnia among front-line healthcare workers fighting against coronavirus disease 2019（COVID-19） in China through a meta-analysis system,provide a basis for improving insomnia among medical staff. Methods The cross-sectional studies on the prevalence of insomnia among front-line healthcare workers fighting against COVID-19 during COVID-19 pandemic in China were retrieved in CNKI,WanFang Data,VIP,PubMed,Embase and web of science databases,and the retrieval time was from December 2019 to April 2022. R software was used for meta-analysis,and the results were analyzed for publication bias and sensitivety analysis. Results A total of 30 studies with 18 075 participants met the inclusion criteria for the analysis,including 10 027 people with insomnia. The prevalence of insomnia among front-line healthcare workers in China was 54.5%[95%CI（47.6%,61.4%）]. The prevalence of insomnia among healthcare workers who are female,married,intermediate professional title,bachelor degree or below,ageed <26 years old,doctor,fighting against the epidemic in Hubei Province,using self-made questionnaire to evaluate insomnia was relatively high. Conclusion The prevalence of insomnia among front-line healthcare workers during the COVID-19 epidemic in China is high,and measures should be taken to prevent and control insomnia.

Supervision and sampling results of edible agricultural products and catering food in Turpan in 2021

PANG Yu-qiao, QIN Na-na

2023, 39(11): 1550-1553.

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Objective To analyze the food safety supervision sampling results of edible agricultural products and catering food in Turpan in 2021,provide scientific basis for market supervision and management departments to carry out food supervision. Methods The data on food safety supervision sampling results of edible agricultural products and catering food in Turpan in 2021were sorted out and analyzed. Results In 2021,255 batches of edible agricultural products were sampled in Turpan,and two batches of unqualified samples were detected,with a total qualified rate of 99.2%. 191 batches of catering food were sampled and five batches of unqualified samples were detected,with a total qualified rate of 97.4%. The edible agricultural products mainly had problems such as pesticide residues exceeding the limit and illegal use,and the catering food mainly had problems such as illegal use of food additives and food microbial pollution. Conclusion In 2021,the safety of edible agricultural products and catering food in Turpan is generally good. However,the regulatory authorities still need to pay attention to the problems in the food quality sampling inspection,strengthen the management responsibilities,and ensure the food quality safety and the health of the people.

Research progress onstatus and interventions of elderly caregivers' attitudes toward older adults

ZHOU Qian, HUANG Jing-lin, LI Hui-ju

2023, 39(11): 1554-1558.

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With 200 million people aged 65 and above by the end of 2021,accounting for 14.2% of the total population,China's population is ageing rapidly. Along with rapid ageing,empty nesting and the miniaturisation of family structures,traditional family-based care cannot meet the needs of society,and social care institutions have become an important part of the elderly care system. As the most direct and crucial caregivers for the elderly,the attitude of caregivers towards the elderly is fundamental to the provision of quality care services to the elderly. By analyzing the current situation and the main factors influencing the attitudes of elderly caregivers towards the elderly,the paper explores the corresponding interventions,summarizes the problems in current research or practice,and provides an outlook on future research directions. The aim is to provide a reference for future research and to build an effective intervention model that is suitable for China's situation,in order to improve the attitudes of elderly caregivers towards the elderly,regulate their care behaviour and improve the quality of elderly care services.

Analysis on effect of online media on the electronic health literacy of medical students and improvement path

TANG Kai-xuan, TIAN Yuan, LIU Yi-ran, AN Ran, WANG Xue-xin

2023, 39(11): 1559-1563.

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With the development of the internet era,the network health information resources are becoming increasingly abundant,which has become one of the main ways for medical students to obtain knowledge,and research on the field of electronic health literacy has also become a hot topic. In recent years,the authenticity of online information and the effective extraction of reasonable information have put forward higher requirements for the training of medical students. This paper reviews the relevant literature on electronic health literacy and the use of online media by medical students at home and abroad,deeply explores the impact of online media on the current situation of the electronic health literacy system of medical students and the improvement path,so as to promote the further development of medical education.

Research progress on job burnout related variables of competitive sports coaches

ZHANG Zhen, CHEN Zhong, SU Yan-qing, YAO Yu

2023, 39(11): 1564-1570.

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In the field of competitive sports,job burnout cares more about the performance of athletes,but the coaches who support them are under greater pressure. Based on the domestic and foreign researches on job burnout of competitive sports coaches,this article reviews the current situation,concept,antecedent and outcome variables of job burnout in competitive sports coaches,and puts forward the corresponding improvement measures and research deficiencies, in order to provide a theoretical reference for the prevention and intervention of coaches' burnout,and provide a new research ideas for them to better serve the development of competitive sports.

Research progress on influencing factors and intervention measures of college students' mobile phone dependence

WU Xin-yi, YIN Shan-yan, TANG Yu-ting, ZHAO Xue-fan

2023, 39(11): 1571-1575.

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With the rapid development of the information age,the popularity of mobile phone has provided many conveniences for college students,but has also given rise to a new global mental health problem-mobile phone dependence. In order to reduce the psychosomatic distress caused by mobile phone dependence,the paper reviews the research achievements in relevant fields in recent years,discusses the influencing factors of this problem from the current situation of mobile phone dependence among college students and its hazards,and summarizes the existing main intervention methods to suggest and expect future intervention studies.

Application progress of internet intervention in HIV/AIDS

GAO Ying, ZHAO Xia, LYU Chun-rong, FENG Shi-ping, GUO Hui, LIU Chang

2023, 39(11): 1576-1580.

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With the development of the internet,network intervention comes into being. More and more researchers began to apply it to the health of people infected with human immunodeficiency viruses（HIV）/patients with acquired immunodeciency syndrome（AIDS）. The network intervention can break through the limitations of time and space,improve the disease treatment enthusiasm and quality of life of HIV infected/AIDS patients,and solve the problems of shortage of personnel,low frequency of development and high cost of treatment in traditional intervention mode. It has shown some advantages in the field of AIDS. Therefore,this paper summarize the application of network intervention in HIV infected/AIDS patients,including the overview,implementation mode,implementation effect,existing problems and suggestions of network intervention,in order to expand ideas for the further research of HIV/AIDS network intervention.

Research progress on the status quo and influencing factors of decent work perception of nursing staff

ZHANG Qian, ZHOU Lu, CUI Yan

2023, 39(11): 1581-1584.

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The decent work perception（DWP） is the subjective perception of the degree of decent work.Due to individual,organizational and family-social factors,nursing staffs' DWP is at a low level,which affects nursing staffs' employment intention and turnover intention. This paper reviewed the concept,measurement tools,research status and influencing factors of nurses' DWP at home and abroad,in order to provide a reference for nurses' occupational mental health and human resource management.

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