Table 3

Crude and adjusted odds ratio of recreational venues smoking risk factors and its 95% confidence interval

VariablesCrude OR (95% CI)AOR (95% CI)*
Reported level of bans
Total indoor areaReferenceReference
Some indoor area3.12 (2.21 to 4.39)3.14 (2.18 to 4.53)
No restrictions14.05 (9.28 to 21.28)14.36 (9.41 to 21.91)
Support for indoor restrictions
Total indoor areaReferenceReference
Some indoor area1.31 (1.00 to 1.73)1.34 (1.01 to 1.77)
DK1.61 (0.92 to 2.83)1.62 (0.93 to 2.81)
No restrictions2.84 (2.09 to 3.86)2.87 (2.12 to 3.89)
Believe smoking causes lung cancer in smokers0.63 (0.47 to 0.84)0.62 (0.45 to 0.84)
Believe smoking causes CHD0.75 (0.58 to 0.95)0.74 (0.58 to 0.96)
Believe smoking causes stroke0.86 (0.63 to 1.16)0.86 (0.63 to 1.19)
Believe smoking causes impotence0.66 (0.48 to 0.91)0.66 (0.48 to 0.91)
Believe smoking causes premature ageing0.69 (0.54 to 0.88)0.68 (0.53 to 0.88)
Believe smoking causes stained teeth0.85 (0.60 to 1.22)0.85 (0.59 to 1.21)
Believe smoking causes emphysema0.73 (0.58 to 0.92)0.72 (0.58 to 0.90)
Believe smoking causes lung cancer in non-smokers0.68 (0.51 to 0.90)0.68 (0.51 to 0.91)
Total number of health effects reported
≤1ReferenceReference
20.97 (0.56 to 1.67)0.96 (0.56 to 1.66)
30.86 (0.55 to 1.34)0.84 (0.55 to 1.29)
40.60 (0.36 to 0.10)0.58 (0.36 to 0.95)
50.61 (0.43 to 0.86)0.60 (0.41 to 0.86)
60.51 (0.32 to 0.81)0.50 (0.31 to 0.79)
70.57 (0.36 to 0.91)0.56 (0.34 to 0.91)
80.47 (0.27 to 0.82)0.45 (0.25 to 0.81)
Trend testχ2trend=28.4,ptrend<0.001
Tobacco is addictive
AgreeReferenceReference
Neither disagree nor agree0.84 (0.53 to 1.35)0.82 (0.51 to 1.30)
Disagree0.98 (0.64 to 1.48)0.99 (0.65 to 1.51)
Enjoying smoking too much to give it up
DisagreeReferenceReference
Neither disagree nor agree1.01 (0.61 to 1.66)1.13 (0.74 to 1.74)
Agree0.89 (0.63 to 1.25)1.10 (0.78 to 1.55)
Overall opinion of smoking behaviour
Very good30.40 (3.93 to 235.46)30.64 (3.94 to 238.25)
Good2.19 (1.17 to 4.07)2.20 (1.16 to 4.18)
Neither good nor bad1.76 (1.21 to 2.56)1.80 (1.23 to 2.63)
Bad1.20 (0.86 to 1.66)1.24 (0.90 to 1.70)
Very badReferenceReference
Attitude of Chinese society to smoking
Disapprove/neither/DKReferenceReference
Support1.27 (1.00 to 1.60)1.27 (1.00 to 1.60)
Cigarettes per day
0–10ReferenceReference
11–202.75 (2.15 to 3.52)2.81 (2.17 to 3.64)
21–302.95 (1.65 to 5.26)2.99 (1.67 to 5.33)
31+2.30 (1.40 to 3.79)2.43 (1.48 to 3.40)
Smokers of five closest friends
NoneReferenceReference
One1.99 (0.66 to 6.01)2.13 (0.72 to 6.32)
Two1.52 (0.64 to 3.64)1.55 (0.66 to 3.61)
Three2.60 (1.05 to 6.41)2.56 (1.09 to 6.05)
Four2.89 (1.07 to 7.83)2.79 (1.08 to 7.23)
All4.05 (1.70 to 9.65)3.81 (1.67 to 8.68)
Region
BeijingReferenceReference
Shenyang2.80 (1.83 to 4.28)2.74 (1.75 to 4.29)
Shanghai2.57 (1.83 to 3.63)2.68 (1.90 to 3.79)
Changsha2.04 (1.46 to 2.84)2.06 (1.45 to 2.92)
Guangzhou1.92 (1.41 to 2.60)2.12 (1.54 to 2.92)
Yinchuan1.84 (1.27 to 2.67)1.77 (1.21 to 2.61)
Gender
Male1.85 (0.97 to 3.53)1.84 (0.96 to 3.49)
FemaleReferenceReference
Age
18–242.74 (0.97 to 7.74)3.27 (1.05 to 10.17)
25–391.15 (0.78 to 1.70)1.21 (0.82 to 1.80)
40–541.74 (1.11 to 2.72)1.74 (1.10 to 2.76)
55+ReferenceReference
  • OR, odds ratio; CI, confidence interval; AOR, adjusted odds ratio.

  • * Adjusted odds ratio: adjusting the potential confounding demographic characteristics including marital status, education attainment, ethnicity, and average monthly household (HH) income. DK, don't know.