3.

肥胖与身体活动、静坐的时间分布的成分线性回归分析

Liner regression analysis with compositional data for obesity and proportion of the day spent in physical activity and sedentary behavior

Items	Professional population				Nonprofessional population
	BMI		-lnWHtR		BMI			-lnWHtR
	BMI, body mass index; WHtR, waist to height ratio; other abbreviations as in Table 1. Adjusted for age, gender, education, annual household income, smoking history, alcohol history, daily total intake of cereals, tubers, vegetables, fruit, meat, controlling of hypertension, diabetes, dyslipidemia in all models.
β	P	β	P	β	P		β		P
MVPA	-0.084	0.255	-0.008	0.022	-0.079	0.041		-0.002		0.630
LIPA	-0.033	0.685	0.004	0.201	-0.096	0.515		-0.004		0.934
SB	0.117	0.003	0.007	0.005	-0.017	0.904		0.003		0.473