| Variable | Category | Cigarette smoking | COR (95% CI) | AOR (95% CI) | value | Yes | No |
| Family size | 1-3 | 8 (1.4%) | 157 (26.6%) | 0.082 (0.031, 0.222) | 0.873 (0.912, 6.139) | 0.645 | 4-6 | 139 (33.0%) | 208 (25.7%) | 2.072 (1.005, 4.272) | 0.944 (0.413, 2.161) | 0.892 | 7-8 | 13 (2.2%) | 32 (5.4%) | 0.656 (0.255, 1.689) | 0.644 (0.233, 1.782) | 0.392 | ≥8 | 13 (2.2%) | 21 (3.6%) | 1 | 1 | | Occupation | Daily laborer | 60 (10.2%) | 157 (26.6%) | 1 | 1 | | Gov’t employed | 60 (10.2%) | 148 (25.0%) | 3.299 (2.202, 4.943) | 0.017 (0.005, 8.153) | 0.567 | Self-employed | 19 (3.2%) | 53 (9.0%) | 0.938 (0.513, 1.714) | 0.028 (0.009, 3.184) | 0.312 | Merchant | 31 (5.2%) | 49 (8.3%) | 1.655 (0.965, 2.839) | 0.007 (0.001, 1.039) | 0.154 | Other | 3 (0.5%) | 11 (1.9%) | 0.714 (0.192, 2.647) | 0.017 (0.006, 2.051) | 0.241 | Monthly income | 0-1500 | 55 (9.3%) | 28 (4.7%) | 1 | 1 | | 1501-3000 | 6 (1.0%) | 79 (13.4%) | 0.039 (0.015, 0.100) | 1.224 (0.881, 17.533) | 0.432 | 3001-4500 | 74 (12.5%) | 82 (13.9%) | 0.459 (0.264, 0.799) | 0.331 (0.664, 1.311) | 0.231 | 4501-6000 | 14 (2.4%) | 74 (12.5%) | 0.096 (0.046, 0.200) | 0.977 (0.564, 2.332) | 0.114 | ≥ 6001 | 24 (4.1%) | 155 (26.2%) | 0.411 (0.239, 0.707) | 0.675 (0.977, 1.871) | 0.224 | Educational status | Illiterate | 8 (1.4%) | 153 (25.9%) | 0.071 (0.030, 0.171) | 9.058 (3.652, 22.469) | <0.001 | ≤12 grade | 140 (23.7%) | 231 (39.1%) | 1.523 (0.874, 2.654) | 0.646 (0,367, 1.139) | 0.131 | ≥ College | 25 (4.2%) | 34 (5.8%) | 1 | 1 | | Chat chewing | Yes | 81 (13.7%) | 258 (43.7%) | 0.221 (0.155, 0.314) | 0.664 (0.222, 1.986) | 0.464 | No | 92 (15.6%) | 160 (27.1%) | 1 | 1 | | Is your parents smoke cigarette | Yes | 72 (12.2%) | 245 (41.5%) | 1 | 1 | | No | 157 (26.6%) | 117 (19.8%) | 4.565 (3.200, 6.515) | 2.288 (1.548, 3.383) | <0.001 | Siblings smoke cigarette | Yes | 73 (12.4%) | 233 (39.4%) | 1 | 1 | | No | 156 (26.4%) | 129 (21.8%) | 3.860 (2.716, 5.485) | 0.847 (0.339, 2.118) | 0.722 | Peers smoke cigarette | Yes | 95 (16.1%) | 271 (45.9%) | 1 | | | No | 134 (22.7%) | 91 (15.4%) | 4.201 (2.948, 5.986) | 1.472 (0.658, 3.297) | 0.347 | Cigarette accessibility | Yes | 102 (17.3%) | 278 (47.0%) | 1 | 1 | | No | 127 (60.2%) | 84 (14.2%) | 4.121 (2.883, 5.889) | 2.354 (0.117, 5.980) | 0.921 | Alcohol consumption | Yes | 81 (13.7%) | 258 (43.7%) | 4.533 (3.182, 6.457) | 2.320 (1.331, 8.440) | 0.004 | No | 148 (25.0%) | 104 (17.6%) | 1 | 1 | |
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