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Table 4 Univariate and multivariate analyses to identify factors associated with current smoking

From: Pulmonary function and factors associated with current smoking among the hill tribe populations in northern Thailand: a cross-sectional study

Characteristics

Current smoking

OR

95% CI

p-value

AOR

95% CI

p-value

Yes

No

n

%

n

%

Sex

 Male

370

36.7

637

63.3

7.68

5.95–9.91

< 0.001*

7.52

5.53–10.24

< 0.001*

 Female

85

7.0

1124

93.0

1.00

  

1.00

  

Age (years)

 20–29

14

34.1

27

65.9

1.99

1.00–3.98

0.049*

   

 30–39

78

17.0

380

83.0

0.79

0.56–1.11

0.182

   

 40–49

148

20.6

569

79.4

1.00

0.74–1.35

0.988

   

 50–59

133

22.1

469

77.9

1.09

0.80–1.49

0.575

   

 ≥ 60

82

20.6

316

79.4

1.00

     

Tribe

 Akha

95

22.6

326

77.4

1.00

     

 Lahu

89

23.0

298

77.0

1.02

0.73–1.42

0.884

   

 Hmong

23

6.3

341

93.7

0.23

0.14–0.37

< 0.001*

   

 Yao

92

26.6

254

73.4

1.24

0.89–1.72

0.197

   

 Karen

90

27.4

239

72.6

1.29

0.92–1.80

0.131

   

 Lishu

66

17.9

303

82.1

0.74

0.52–1.06

0.104

   

Marital status

 Single

43

34.1

83

65.9

1.00

     

 Married

378

19.8

1530

80.2

0.47

0.32–0.70

< 0.001*

   

 Widowed

19

17.1

92

82.9

0.39

0.21–0.73

0.003*

   

 Divorce

15

21.1

56

78.9

0.51

0.26–1.01

0.057

   

Religion

 Buddhist

185

15.9

982

84.1

1.00

     

 Christian

270

26.9

732

73.1

1.95

1.58–2.41

< 0.001*

   

Education

 Uneducated

222

18.8

962

81.3

1.00

     

 Primary education

155

27.1

417

72.9

1.60

1.27–2.03

< 0.001*

   

 Secondary education

56

16.4

285

83.6

0.85

0.61–1.17

0.327

   

 High Vocational Certificate

11

13.3

72

86.7

0.66

0.34–1.26

0.214

   

 Bachelor’s degree or higher

11

31.4

24

68.6

1.98

0.95–4.11

0.065

   

Annual family income (baht)

 ≤ 10,000

36

17.1

174

82.9

1.00

     

 10,001-50,000

306

23.2

1015

76.8

1.45

0.99–2.13

0.053

   

 50,001-100,000

80

17.2

386

82.8

1.00

0.65–1.54

0.994

   

 ≥ 100,001

33

15.1

186

84.9

0.85

0.51–1.43

0.559

   

Occupation

 Unemployed

28

15.1

157

84.9

1.00

     

 Merchant

5

9.4

48

90.6

0.58

0.21–1.60

0.300

   

 Employee

71

30.5

162

69.5

2.47

1.51–4.03

< 0.001*

   

 Agriculture

351

20.1

1393

79.9

1.42

0.93–2.16

0.099

   

Alcohol use

 Yes

278

29.5

664

70.5

2.59

2.10–3.20

< 0.001*

   

 No

177

13.9

1097

86.1

1.00

     

Amphetamine use

 Yes

49

49.0

51

51.0

4.04

2.69–6.07

< 0.001*

2.92

1.69–5.03

< 0.001*

 No

406

19.2

1710

80.8

1.00

  

1.00

  

Opium use

 Yes

35

38.0

57

62.0

2.49

1.61–3.84

< 0.001*

   

 No

420

19.8

1704

80.2

1.00

     

Marijuana use

 Yes

25

42.4

34

57.6

2.95

1.74–5.00

< 0.001*

   

 No

430

19.9

1727

80.1

1.00

     

Knowledge of the harms of smoking

 Low

45

20.5

174

79.5

1.00

0.69–1.45

0.984

   

 Moderate

131

17.9

599

82.1

0.84

0.65–1.09

0.849

   

 Good

168

20.5

652

79.5

1.00

     

Attitudes toward the harms of smoking

 Low

195

27.2

521

72.8

3.25

2.10–5.04

< 0.001*

2.47

1.53–3.97

< 0.001*

 Moderate

123

15.4

678

84.6

1.57

1.00–2.47

0.047*

1.36

0.84–2.21

0.203

 Good

26

10.3

226

89.7

1.00

  

1.00

  

FEV1 (%)

 Normal

262

22.6

896

77.4

1.00

     

 Low

136

23.7

438

76.3

1.06

0.83–1.34

0.619

   

FVC (%)

 Normal

187

23.7

603

76.3

1.00

     

 Low

211

22.4

731

77.6

0.93

0.74–1.16

0.531

   

FEV1/FVC

 Normal

397

23.1

1322

76.9

1.00

     

 Low

1

7.7

12

92.3

0.21

0.36–2.14

0.219

   

Oxygen saturation (%)

 Normal

443

20.4

1727

79.6

1.00

     

 Low

12

26.1

34

73.9

1.37

0.70–2.67

0.348

   
  1. *Significant difference at α = 0.05, after adjusting for potential confounders (sex, age, education, and religion)