安徽医科大学学报2015，Vol.50Issue(9)：1271-1275,5.
六安市留守村民BMI影响因素分位数回归分析
Associations of BMI with common factors among left-behind farmers in rural China:a quantile regression analysis
摘要
Abstract
Objective To explore the associations of body mass index ( BMI) with common factors. Methods A-nalysis of the impact level and trend of common factors on BMI used Quntile regression modeling. Results There were statistically significant correlations between BMI and age, gender, waist-to-hip ratio, physical activity, diet index, and life event index. As BMI increased, the effect of age on BMI displayed a weak yet steady decline( e. g. , the coefficient between age and BMI decreased from -0. 044 at the 10th percentile to -0. 029 at the 90th per-centile);while that of gender, substantial and continued increase ( the coefficient between gender and BMI in-creased from 0. 329 at the 10th percentile to 1. 546 at the 90th percentile). Waist-to-hip ratio showed increasing positive relations through all BMI quantiles and the coefficient was 18. 024 at the 10 th percentile and 31. 716 for the 90th percentile. Physical activity was negatively associated with BMI for most quantiles (quantile>0. 4). The effect of diet behavior index remained relatively stable for most BMI quantiles yet began to increase rapidly starting from the 80th percentile of BMI. The effect of life event index on BMI started and ended relatively high and reached its bottom in the middle part of BMI quantiles. Conclusion The influence of common factors on different level of BMI presented statistical difference.关键词
留守村民/BMI/分位数回归/影响因素Key words
left-behind farmers/body mass index/quantile regression/influence factors分类
医药卫生引用本文复制引用
沈兴蓉,冯瑞,柴静,解少煜,石勇,程静,王德斌..六安市留守村民BMI影响因素分位数回归分析[J].安徽医科大学学报,2015,50(9):1271-1275,5.基金项目
国家自然科学基金(编号:81172201) （编号:81172201）
