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 |  |  |  |