OCCUPATION AND HEALTH ›› 2026, Vol. 42 ›› Issue (7): 938-944.

• Treatise • Previous Articles     Next Articles

Correlation analysis between dietary patterns and frailty among medical staff aged ≥40 years in Pudong New Area of Shanghai City

WU Yating1,2, HE Yanan2, LU Qinglian1, CHEN Jiayi3, ZHENG Min4, ZHAO Chunyan2()   

  1. 1 School of MedicineTongji UniversityShanghai 200092, China
    2 East Hospital Affiliated to Tongji UniversityShanghai 200120, China
    3 Xuhui District Central Hospital of ShanghaiShanghai 200030, China
    4 Naval Medical Center of Special CharacteristicsShanghai 200082, China
  • Received:2025-05-09 Revised:2025-05-19 Online:2026-04-01 Published:2026-05-14

Abstract:

Objective To investigate the dietary patterns of medical staff aged ≥40 years in Pudong New Area of Shanghai City,and explore their correlation with frailty. Methods A multistage sampling method was adopted to select on-the-job medical staff from all tertiary medical institutions in Pudong New Area of Shanghai City between March and September 2024.A self-designed questionnaire was formulated based on the subjects' occupational characteristics and the brief food frequency questionnaire(FFQ).Factor analysis was used to extract the dietary patterns of the subjects,and individual factor scores of dietary patterns were calculated for classification.Ordinal multinomial Logistic regression was performed to analyze the correlation between different dietary patterns and frailty. Results Among the 377 medical staff,206 cases(54.64%) were identified as pre-frailty,and 23 cases(6.10%) were diagnosed with frailty positivity. Factor analysis extracted three distinct dietary patterns:the high-calorie and high-fat dietary pattern,the balanced dietary pattern rich in eggs,milk,fruits and vegetables,and the high-carbohydrate dietary pattern.After adjusting for confounding factors,Logistic regression analysis showed that compared with the balanced dietary pattern rich in eggs,milk,fruits and vegetables,the population with a high-calorie and high-fat dietary pattern had a positive correlation with the occurrence of frailty(OR=1.767,95%CI:1.081-2.886). Conclusion Medical staff aged ≥40 years in Pudong New Area of Shanghai City face a certain risk of frailty.Their dietary structures are mainly characterized by three patterns.Among these,the high-calorie and high-fat dietary pattern may be associated with a higher risk of frailty in medical staff,while adherence to the balanced dietary pattern with sufficient eggs,milk,fruits and vegetables serves as a protective factor against frailty.These findings suggest that increased intake of fruits and vegetables,high-protein foods,nuts,and whole grains may help reduce and delay the risk of frailty.

Key words: Dietary patterns, Frailty, Medical staff, Factor analysis, Aged ≥40 years

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