Table 1a.
Demographic factors associated with ever smoked among school going male adolescents in Lusaka, Zambia
| Ever smoked | Model 1 | Model 2 | |||
| Factor | Total* | %** | p value | OR (95% CI) | OR (95% CI) |
| Age (years) | |||||
| <13 | 141 | 50.7 | <0.001 | 1.37 (1.27, 1.48) | - |
| 13 | 139 | 41.8 | 0.96 (0.89, 1.03) | ||
| 14 | 221 | 49.4 | 1.30 (1.21, 1.39) | ||
| 15 | 208 | 33.5 | 0.67 (0.62, 0.73) | ||
| 16 | 168 | 35.6 | 0.74 (0.67, 0.80) | ||
| 17+ | 162 | 47.2 | 1 | ||
| Grade | |||||
| 7 | 554 | 43.8 | 0.149 | 1.03 (0.98, 1.09) | - |
| 8 | 280 | 41.0 | 0.92 (0.85, 1.00) | ||
| 9 | 215 | 44.1 | 1 | ||
| Parents smoked | |||||
| None | 689 | 38.1 | <0.001 | 0.68 (0.65, 0.71) | 0.82 (0.69, 0.97) |
| Either parent smoked | 240 | 57.2 | 1 | 1 | |
| Closest friends smoke cigarettes | |||||
| None | 697 | 35.3 | <0.001 | 0.46 (0.43, 0.49) | 0.52 (0.41, 0.68) |
| Some of them | 261 | 56.8 | 1.11 (1.04, 1.18) | 1.16 (0.88, 1.53) | |
| Most or all of them | 85 | 70.1 | 1 | 1 | |
*
number in each class
**
weighted factor specific (row) percent