Table 3 Multiple logistic regression for covariate factors and their associations with overweight/obesity

Age

1.02(1.01-1.03)

0.003

1.02(1.01-1.03)

0.001

Family history of obesity

2.19(2.07-2.32)

< 0.001

2.38(1.56-2.62)

< 0.001

Family annual income

< 10000 yuan

1(ref)

1(ref)

≥ 10000 yuan

1.61(1.11-2.33)

0.012

1.86(1.30-2.65)

0.001

Rural residents

1(ref)

1(ref)

Urban residents

2.82(1.86-4.27)

< 0.001

2.74(1.87-4.01)

< 0.001

drinker

1.39(0.99-1.95)

0.06

1.50(1.09-2.07)

0.013

Male

1(ref)

1(ref)

Female

1.17(0.79-1.74)

0.42

1.04(0.72-1.51)

0.823

Education (%, n)

Primary school or below

1(ref)

1(ref)

Middle school

1.26(0.84-1.90)

0.630

1.16(0.79-1.72)

0.595

College or above

1.13(0.68-1.90)

0.270

1.14(0.70-1.87)

0.446

Never smoker

1(ref)

1(ref)

Ex-smoker

1.30(0.71-2.35)

0.40

0.82(0.46-1.48)

0.515

Current smoker

0.96(0.64-1.44)

0.84

0.85(0.58-1.25)

0.404

Regular leisure-time physical activity

1.03(0.73-1.46)

0.85

1.25(0.90-1.73)

0.183