Table 2.

Association of potential risk factors for physical activity and sitting time

Factors	OR (95% CI)
	Physical activity				Sitting time per day
	Moderate*	Moderate†	Light*	Light†	>7.5 hours*	>7.5 hours†
Age (years)
18-	1.00	1.00	1.00	1.00	1.00	1.00
30-	0.67 (0.56 to 0.81)	0.70 (0.58 to 0.85)	0.58 (0.48 to 0.70)	0.63 (0.51 to 0.76)	0.99 (0.85 to 1.14)	1.04 (0.89 to 1.22)
40-	0.49 (0.41 to 0.57)	0.52 (0.44 to 0.62)	0.42 (0.36 to 0.50)	0.47 (0.39 to 0.56)	0.91 (0.79 to 1.04)	0.98 (0.85 to 1.13)
50-	0.48 (0.41 to 0.57)	0.52 (0.44 to 0.61)	0.36 (0.30 to 0.42)	0.39 (0.33 to 0.47)	0.87 (0.76 to 0.99)	0.94 (0.82 to 1.09)
60-	0.45 (0.38 to 0.52)	0.51 (0.43 to 0.61)	0.46 (0.39 to 0.54)	0.51 (0.43 to 0.62)	0.89 (0.78 to 1.02)	0.89 (0.77 to 1.02)
70–79	0.62 (0.52 to 0.74)	0.72 (0.60 to 0.87)	1.13 (0.95 to 1.35)	1.17 (0.97 to 1.42)	1.34 (1.17 to 1.54)	1.08 (0.93 to 1.26)
Gender
Female	1.00	1.00	1.00	1.00	1.00	1.00
Male	0.44 (0.42 to 0.46)	0.46 (0.43 to 0.50)	0.83 (0.79 to 0.88)	0.76 (0.70 to 0.83)	1.30 (1.24 to 1.36)	1.25 (1.16 to 1.35)
Education
≤ Primary school	1.00	1.00	1.00	1.00	1.00	1.00
≥ Junior middle school	1.01 (0.96 to 1.06)	1.07 (1.01 to 1.14)	0.97 (0.92 to 1.02)	1.27 (1.20 to 1.35)	0.92 (0.88 to 0.97)	0.85 (0.81 to 0.90)
Marital status
Married/cohabiting	1.00	1.00	1.00	1.00	1.00	1.00
Divorced/widowed/unmarried	1.22 (1.12 to 1.33)	1.15 (1.05 to 1.26)	1.62 (1.49 to 1.77)	1.19 (1.09 to 1.31)	1.20 (1.11 to 1.28)	1.08 (1.00 to 1.17)
Per capita monthly income
<RMB500	1.00	1.00	1.00	1.00	1.00	1.00
RMB500-	1.15 (1.08 to 1.22)	1.16 (1.09 to 1.23)	0.94 (0.88 to 1.00)	1.08 (1.01 to 1.15)	0.75 (0.71 to 0.80)	0.79 (0.75 to 0.84)
≥RMB1000	1.16 (1.09 to 1.23)	1.13 (1.06 to 1.21)	0.88 (0.83 to 0.94)	1.00 (0.93 to 1.07)	0.96 (0.91 to 1.02)	1.01 (0.95 to 1.07)
Smoking
Never	1.00	1.00	1.00	1.00	1.00	1.00
Light	0.52 (0.46 to 0.58)	0.57 (0.51 to 0.64)	0.84 (0.75 to 0.93)	0.79 (0.70 to 0.89)	1.04 (0.93 to 1.16)	0.88 (0.78 to 0.99)
Moderate	0.52 (0.46 to 0.59)	0.61 (0.54 to 0.69)	0.86 (0.77 to 0.97)	0.85 (0.75 to 0.97)	1.21 (1.07 to 1.36)	1.02 (0.90 to 1.16)
Heavy	0.47 (0.44 to 0.51)	0.57 (0.52 to 0.61)	0.87 (0.81 to 0.92)	0.83 (0.77 to 0.90)	1.41 (1.33 to 1.51)	1.20 (1.10 to 1.31)
Drinking,
Never	1.00	1.00	1.00	1.00	1.00	1.00
Light	0.50 (0.46 to 0.54)	0.64 (0.59 to 0.69)	0.76 (0.71 to 0.81)	0.80 (0.74 to 0.87)	1.19 (1.10 to 1.28)	0.98 (0.90 to 1.06)
Moderate	0.54 (0.48 to 0.61)	0.71 (0.63 to 0.81)	0.82 (0.73 to 0.91)	0.93 (0.82 to 1.05)	1.08 (0.96 to 1.22)	0.82 (0.72 to 0.92)
Heavy	0.51 (0.44 to 0.58)	0.70 (0.61 to 0.81)	1.01 (0.89 to 1.13)	1.10 (0.96 to 1.27)	1.31 (1.16 to 1.48)	1.06 (0.93 to 1.21)
Dietary habits
Meat and poultry	1.04 (1.02 to 1.06)	1.08 (1.06 to 1.10)	0.93 (0.91 to 0.95)	1.01 (0.99 to 1.04)	1.01 (0.99 to 1.03)	0.95 (0.93 to 0.97)
Fishery products	1.16 (0.99 to 1.34)	0.97 (0.82 to 1.16)	0.61 (0.52 to 0.72)	0.76 (0.63 to 0.93)	2.16 (1.86 to 2.52)	2.21 (1.87 to 2.60)
Vegetables and fruits	1.01 (1.01 to 1.01)	1.01 (1.00 to 1.01)	0.97 (0.97 to 0.97)	0.96 (0.96 to 0.97)	1.04 (1.03 to 1.04)	1.05 (1.04 to 1.05)
Soy products	0.91 (0.88 to 0.94)	0.88 (0.85 to 0.92)	0.74 (0.71 to 0.77)	0.81 (0.78 to 0.85)	0.91 (0.87 to 0.95)	0.91 (0.88 to 0.95)
Sitting time per day
≤7.5 hours	1.00	1.00	1.00	1.00	–	–
>7.5 hours	1.34 (1.25 to 1.42)	1.35 (1.27 to 1.44)	3.68 (3.47 to 3.91)	4.09 (3.84 to 4.36)	–	–
Physical activity
Vigorous	–	–	–	–	1.00	1.00
Moderate	–	–	–	–	1.34 (1.25 to 1.42)	1.37 (1.28 to 1.46)
Light	–	–	–	–	3.68 (3.47 to 3.91)	4.08 (3.83 to 4.34)

*Was a crude model;.

†Was a full model: adjusted for age, gender, education, marital status, per capita monthly income, smoking, drinking and dietary habits.