Table 3 Multivariate analysis of type of smokers with demographic variables

Age

p < 0.001*

p < 0.001*

p = 0.891*

 15–24

1.00

1.00

1.00

 25–44

4.85

(2.6, 8.9)

3.81

(1.9, 7.4)

1.03

(0.7, 1.6)

 45–64

6.94

(3.6, 13.3)

6.03

(2.9, 12.6)

1.00

(0.6, 1.7)

 65+

12.02

(6.1, 23.6)

12.68

(5.9, 27.2)

0.86

(0.5, 1.5)

Education

p < 0.001*

p < 0.001*

p < 0.001*

 None or primary school

22.21

(12.1, 40.9)

2.70

(1.4, 5.2)

7.18

(4.1, 12.6)

 Primary

12.50

(6.8, 23.1)

1.88

(1.0, 3.5)

6.47

(3.7, 11.2)

 Secondary

2.90

(1.6, 5.4)

1.05

(0.6, 2.0)

2.80

(1.7, 4.7)

 University

1.00

1.00

1.00

Income

p < 0.001*

p < 0.010*

p = 0.074*

 Low

3.96

(2.8, 5.5)

1.81

(1.3, 2.6)

1.49

(1.0, 2.3)

 Middle

1.73

(1.3, 2.3)

1.00

(0.7, 1.3)

1.46

(1.0,2.1)

 High

1.00

1.00

1.00

Residence

p < 0.001*

p = 0.438*

p < 0.001*

 Rural

3.94

(3.0, 5.2)

1.13

(0.8, 1.5)

3.52

(2.6, 4.7)

 Urban

1.00

1.00

1.00

Region

p < 0.001*

p < 0.001*

p < 0.001*

 Bangkok

0.08

(0.0, 0.1)

1.40

(0.8, 2.4)

0.07

(0.0, 0.1)

 Central

0.17

(0.1, 0.3)

1.49

(1.0, 2.3)

0.12

(0.1, 0.2)

 North

0.20

(0.1, 0.3)

2.40

(1.6, 3.7)

0.09

(0.1, 0.2)

 Northeast

0.41

(0.2, 0.7)

1.02

(0.7, 1.5)

0.43

(0.3, 0.7)

 South

1.00

1.00

1.00