OCCUPATION AND HEALTH ›› 2026, Vol. 42 ›› Issue (20): 2833-2838.

• Treatise—Epidemiology and Preventive Health Care • Previous Articles     Next Articles

Study on the salt reduction among residents in a certain district of Qingdao City in 2024

WANG Xuan1,2, SUN Simin2, ZHANG Hua3, ZHANG Bingyin4, ZHANG Jintai2(), ZHANG Li1()   

  1. 1 School of Population Medicine and Public HealthChinese Academy of Medical Sciences & Peking Union Medical CollegeBeijing 100730, China
    2 Qingdao Huangdao District Center for Disease Control and PreventionQingdaoShandong 266499, China
    3 Qingdao Center for Disease Control and PreventionQingdaoShandong 266033, China
    4 Shandong Center for Disease Control and PreventionJinanShandong 250014, China
  • Received:2026-01-21 Revised:2026-03-02 Online:2026-10-15 Published:2026-09-14
  • Contact: ZHANG Li,E-mail:zhangli@pumc.edu.cn;ZHANG Jintai,E-mail:zjt1974@163.com

Abstract:

Objective To investigate the knowledge-attitudes-practice(KAP) related to salt-reduction among residents in a certain district of Qingdao City,as well as their urinary sodium levels and hypertension prevalence,explore the association between salt- reduction KAP and urinary sodium levels and hypertension prevalence,and identify the preferential intervention of salt-reduction KAP and provide a basis for the prevention and control of hypertension. Methods A multi-stage cluster random sampling method was used to select 350 residents aged 18-69 years in a certain district of Qingdao City for questionnaire surveys and health examination in August 2024. Linear regression and multivariate Logistic regression were used to explore the association between KAP,urinary sodium,and hypertension. Results The proportion of participants with high levels of salt reduction knowledge,attitude,and practice were 67.4%,74.6%,and 44.30%,respectively,and 63.1% of participants had high overall KAP scores. The median urinary sodium level was 112.30 mmol/L,with those having high overall KAP scores showing lower urinary sodium levels,and the difference was statistically significant(Z=-2.141,P<0.05). The prevalence of hypertension was 36.3%,with the hypertension rate among individuals with high salt reduction behaviors being lower than that in the low-score group,and the difference was statistically significant(28.4% vs 42.6%,P<0.05). High salt reduction behavior was a protective factor for hypertension(OR=0.559,95%CI:0.342-0.912,P<0.05). Conclusion Residents in a certain district of Qingdao City have a relatively high level of salt reduction knowledge and related beliefs,but behaviors are still at a low level. Efforts should focus on promoting specific behaviors,such as the use of low-sodium salt and salt spoons,strengthening guidance on salt control measures,and encouraging residents to translate knowledge into action,thereby reducing the risk of hypertension and improving health literacy.

Key words: Hypertension, Salt reduction, Knowledge-attitude-practice, Health education, Urinary sodium, Cross-sectional studies

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