2023年贵州省贫困地区中小学生维生素D 营养状况及影响因素研究.

Objective To explore the vitamin D nutritional status and influencing factors of primary and middle school students in poverty areas of Guizhou Province, and to provide scientific basis for the development of targeted nutritional improvement measures. Methods A total of 2,519 students from 4 primary and4 middle schools in 9 key monitoring counties (districts) in Guizhou Province, where the Nutrition Improvement Program for Rural Compulsory Education Students was implemented in 2023, were selected for questionnaire surveys, physical examinations, and blood biochemistry tests using multistage cluster sampling methods. Multifactorial logistic regression was used to analyze the current status of vitamin D nutrition and its influencing factors. Results The average vitamin D level of primary and middle school students in poverty areas of Guizhou Province was (22. 59 ± 6. 66) ng/ml, and the rate of low vitamin D was 37. 51%. The prevalence of low vitamin D among female students (46. 17%) was higher than that of male students (29. 11%), and the difference was statistically significant 仗2 = 78. 213, P < 0. 001). There was a significant difference in the rate of low vitamin D among students in different regions 仗2 二 23. 454, P <0. 001), and the rate of low vitamin D tended to increase with age = 44. 905, P <0. 001). The results of multifactorial logistic regression analysis showed that, compared with the corresponding reference group, ethnic minorities (OR = 0. 706, 95% CI: 0. 590 - 0. 844), physical activity M60 min/d (OR = 0. 791, 95% CI: 0. 663 - 0. 943), and living in the countryside (OR - 0. 747, 95% CI: 0. 616 -0.906) were protective factors for low vitamin D levels; obesity (OR =2. 133, 95% C/: 1.390 - 3.272), female students (OR 二2. 238, 95% CI: 1.882 -2.662), the 11-13 years old group (OR =1. 849, 95% CI: 1. 521 - 2. 248) and the 14 - 17 years old group (OR = 2. 000, 95% CI: 1. 576 - 2. 539) were risk factors for low vitamin D levels. Conclusion High rates of low vitamin D among primary and middle school students in poverty areas of Guizhou Province require the development of personalized nutritional interventions to improve vitamin D nutritional status. [ABSTRACT FROM AUTHOR]