Table 4 Risk Factors Associated with the Crude Prevalence of Obesity from Multivariate Logistic Regression in Women (N=12,783)

Age-groups (years)

 18-34

7.5

1.00

22.9

1.00

 35-44

12.1

1.45(1.23-1.71)

41.1

1.96(1.76-2.18)

 45-54

19.6

2.57(2.19-3.01)

57.9

3.59(3.21-4.02)

 55-64

28.0

4.39(3.68-5.24)

73.4

6.85(5.93-7.91)

 65-74

16.0

2.57(2.01-3.29)

66.8

4.96 (4.11-5.98)

Ethnic

 Han

14.6

1.00

45.0

1.00

 Others

10.1

0.86(0.67-1.10)

27.7

0.55(0.46-0.66)

Educational level

 No school

19.0

1.00

64.8

1.00

 Primary school

20.9

1.13(0.91-1.41)

65.5

1.33(1.10-1.60)

 Junior high school

15.0

1.02(0.82-1.27)

43.6

0.96(0.80-1.15)

 ≥Senior high school

6.6

0.61(0.45-0.81)

23.6

0.61(0.49-0.75)

Occupation

 Blue-collar

15.3

1.00

46.6

1.00

 White-collar

9.4

0.77(0.63-0.94)

36.9

1.12(0.98-1.28)

 Organization

12.6

1.19(0.93-1.54)

37.4

1.17(0.97-1.42)

 Others

15.3

0.93(0.82-1.06)

43.3

0.81(0.74-0.90)

Family income/year ^c

 <10,000 RMB

18.7

1.00

65.1

1.00

 10,000-30,000 RMB

17.5

1.09(0.90-1.34)

55.1

0.83(0.70-0.98)

 30,000-50,000RMB

13.9

1.00(0.83-1.20)

42.8

0.62(0.53-0.72)

 >50,000RMB

11.6

1.02(0.82-1.26)

31.7

0.47(0.40-0.56)

Parental obesity

 No

13.0

1.00

43.8

1.00

 Yes

20.3

2.06(1.82-2.33)

44.5

1.26(1.14-1.40)

Physical activity

 Low

14.1

1.00

42.1

1.00

 High

15.0

0.89 (0.79-1.01)

49.3

0.99(0.90-1.09)

Cigarette smoking

 Never

14.5

1.00

43.2

1.00

 Current

11.0

0.47(0.36-0.60)

50.0

0.58(0.49-0.68)

 Former

13.2

0.63(0.36-1.08)

71.9

2.31(1.47-3.62)

Alcohol consumption

 Never

14.4

1.00

43.7

1.00

 1 drink per day

7.4

0.32(0.11-0.90)

63.0

0.79(0.44-1.41)

 ≥2 drinks per day

11.0

0.79(0.55-1.13)

46.8

1.46(1.15-1.86)

Eat fried foods

 Never

15.3

1.00

46.1

1.00

 Yes

7.6

0.63(0.51-0.77)

29.2

0.76(0.67-0.86)

Have a diet low in fat/calories

 No

15.2

1.00

43.1

1.00

 Yes

11.9

0.67(0.59-0.76)

46.1

1.05(0.96-1.15)