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Table 4 Self-enforcement and associated factors

From: Compliance and enforcement of a partial smoking ban in Lisbon taxis: an exploratory cross-sectional study

Self-enforcement

 

Yes

 

No

 

Total

 

Crude OR

95%CI

p value

Adjusted OR

95%CI

p value

MLR

  

n

%

n

%

n

%

       

Smoking behaviour

N-Smokers

131

92.9

10

7.1

141

100

5.44

2.54–11.69

<0.001

3.94

1.77–8.75

0.001

Model explanation

Ref

Smokers

77

70.6

32

29.4

109

100

      

82.9%

 

Total

208

83.2.

42

16.8

250

100

       

Smoking Drivers’ Compliance

Yes

35

94.6

2

5.4

37

100

12.50

2.79–56.02

<0.001

ns

  

Hosmer &Lemeshow test

Ref

No

42

58.3

30

41.7

72

100

      

P value = 0.264

 

Total

77

70.6

32

29.4

109

100

       

Smoke-free Car *

Yes

111

92.5.

9

7.5

120

100

4.54

2.03–10.17

<0.001

ns

  

Model p value

Ref

No

76

73.1

28

26.9

104

100

      

<0.001

 

Total

187

83.5

37

16.5

224

100

       

Allowing smoking prior to the ban**

No

48

96.0

2

4.00

50

100

6.41

1.49–27.69

0.005

4.79

1.08–21.16

0.039

 

Ref

Yes

131

78.9

35

21.1

166

100

       
 

Total

179

82.9

37

17.1

216

100

       

Age

≥55

104

88.9

13

11.1

117

100

2.23

1.10–4.53

0.024

ns

   

Ref

<55

104

78.2

29

21.8

133

100

       
 

Total

208

83.2

42

16.8

250

100

       

Ban support

Yes

179

86.5

28

13.5

207

100

3.09

1.46–6.55

0.002

ns

   

Ref

No

29

67.4

14

32.6

43

100

       
 

Total

208

83.2

42

16.8

250

100

       
  1. OR Odds ratio, MLR Multiple logistic regression, Ref Reference category for comparison; ns: non-significant; *not-applicable: “I do not have a car” (n = 26); **not-applicable: “I did not work as a taxi driver prior the ban” (n = 34); Adjusted OR derives from MLR adjusted for drivers’ smoking behaviour, allowing smoking prior to the ban, smoke-free car, age, ban support.