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Table 4 Self-reported smoking of current smokers in the last 2 weeks according to survey waves (baseline vs evaluation survey), in Guangzhou, China

From: Smoking behaviors before and after implementation of a smoke-free legislation in Guangzhou, China

Extent of smoking restriction, venues

Baseline survey

Evaluation survey

Reduction (%)

aOR(95 % CI) for smoking ban

p

n1

Smoking (%)

n2

Smoking (%)

Full smoking ban

763

36.4

839

24.3

33.2

0.56(0.38 to 0.82)

0.022

 Cultural venues

168

22.2

194

8.7

60.8

0.34(0.17 to 0.68)

0.022

 Public transport vehicles

582

10.7

698

4.2

60.8

0.38(0.20 to 0.73)

0.023

 Government offices

165

48.3

158

24.8

48.7

0.35(0.13 to 0.93)

0.044

 Commercial venues

584

15.8

723

7.6

51.9

0.42(0.16 to 1.07)

0.057

 Medical facilities

210

21.5

236

14.0

34.9

0.58(0.26 to 1.31)

0.102

 Stadiums

184

42.6

189

29.6

30.5

0.62(0.26 to 1.46)

0.137

 Primary/secondary schools

213

21.2

193

19.8

6.6

1.08(0.34 to 3.44)

0.813

 Universities

91

31.4

99

29.4

6.4

0.96(0.49 to 1.86)

0.802

Partial smoking ban

842

89.6

873

90.4

−0.9

1.09(0.63 to 1.91)

0.562

 Workplaces

510

78.8

581

64.5

18.1

0.46(0.30 to 0.70)

0.015

 Restaurants

629

85.3

745

75.1

12.0

0.49(0.26 to 0.91)

0.038

 Hotels

188

83.4

230

75.6

9.4

0.67(0.47 to 0.96)

0.041

 Cafes/bars/nightclubs

298

90.5

333

89.7

0.9

1.09(0.31 to 3.80)

0.804

 Amusement parks

425

66.4

562

63.7

4.1

0.85(0.48 to 1.50)

0.349

 Waiting room of transport vehicles

542

48.6

680

49.9

−2.7

1.05(0.43 to 2.54)

0.838

No ban

 Home

882

91.0

877

89.4

1.8

0.78(0.51 to 1.21)

0.138

  1. aOR, adjusted OR; n, number of visitors who visited venues in the last 2 weeks. Smoking(%), weighted ratio of smokers (who smoked in venues) to visitors
  2. Gender and age have been controlled for in the multiple logistic regression models. The survey sample size of current smokers (n) is unweighted while other estimates are weighted