The prevalence of ever having had EE among the participants along with crude and adjusted ORs
| Variable | Total* | EE (%) | Crude OR (95% CI)† | p Value | Adjusted OR (95% CI)† | p Value |
|---|---|---|---|---|---|---|
| Age (years) | ||||||
| 12 | 111 | 16.2 | 1 | 1 | ||
| 13 | 1577 | 13.8 | 0.80 (0.47 to 1.36) | 0.430 | 0.88 (0.43 to 1.77) | 0.721 |
| 14 | 1726 | 14.1 | 0.85 (0.50 to 1.44) | 0.561 | 1.09 (0.54 to 2.20) | 0.804 |
| Sex | ||||||
| Female | 1784 | 16.2 | 1 | 1 | ||
| Male | 1630 | 11.8 | 0.69 (0.56 to 0.83) | 0.000 | 0.66 (0.51 to 0.84) | 0.001 |
| Type of house | ||||||
| Brick | 2928 | 14.11 | 1 | 1 | ||
| Mud | 45 | 15.56 | 1.16 (0.51 to 2.62) | 0.716 | 0.81 (0.23 to 2.75) | 0.738 |
| Corrugated iron | 189 | 15.34 | 1.19 (0.78 to 1.80) | 0.406 | 1.22 (0.71 to 2.12) | 0.459 |
| Combination | 126 | 12.70 | 0.85 (0.49 to 1.45) | 0.560 | 0.74 (0.39 to 1.39) | 0.352 |
| ETS exposure at home in the past 30 days | ||||||
| No | 1453 | 12.6 | 1 | 1 | ||
| Yes | 1449 | 16.2 | 1.36 (1.10 to 1.68) | 0.003 | 1.30 (1.01 to 1.67) | 0.038 |
| ETS exposure at school in the past 30 days | ||||||
| No | 1447 | 12.99 | 1 | 1 | ||
| Yes | 1175 | 16.34 | 1.29 (1.04 to 1.61) | 0.019 | 1.26 (1.00 to 1.60) | 0.050 |
| Mother/female guardian smoke cigarettes | ||||||
| No | 3028 | 13.38 | 1 | |||
| Yes | 342 | 20.18 | 1.55 (1.16 to 2.08) | 0.003 | 1.18 (0.80 to 1.73) | 0.394 |
| Fuel frequently used for heating at home | ||||||
| Electricity | 2033 | 12.7 | 1 | 1 | ||
| Gas | 425 | 19.5 | 1.62 (1.23 to 2.13) | 0.001 | 1.76 (1.28 to 2.43) | 0.000 |
| Paraffin | 631 | 14.3 | 1.25 (0.95 to 1.65) | 0.104 | 1.22 (0.85 to 1.75) | 0.273 |
| Open fires | 270 | 16.3 | 1.43 (1.01 to 2.03) | 0.043 | 1.40 (0.90 to 2.18) | 0.127 |
| Mode of transport to school | ||||||
| Walk | 1723 | 12.71 | 1 | 1 | ||
| Taxi/bus | 705 | 14.18 | 1.13 (0.87 to 1.46) | 0.329 | 1.11 (0.80 to 1.54) | 0.511 |
| Motor car | 683 | 17.13 | 1.42 (1.11 to 1.81) | 0.005 | 1.24 (0.84 to 1.85) | 0.271 |
| Combination | 200 | 14.00 | 1.12 (0.73 to 1.71) | 0.587 | 0.97 (0.57 to 1.68) | 0.930 |
| Train | 99 | 17.17 | 1.44 (0.83 to 2.47) | 0.186 | 1.48 (0.77 to 2.85) | 0.232 |
| Frequency of trucks passing near homes on weekdays | ||||||
| Never | 562 | 12.28 | 1 | 1 | ||
| Seldom | 1030 | 14.08 | 1.10 (0.81 to 1.51) | 0.519 | 1.21 (0.81 to 1.81) | 0.347 |
| Frequently through the day | 578 | 15.05 | 1.28 (0.91 to 1.08) | 0.151 | 1.60 (1.03 to 2.51) | 0.037 |
| Almost all day | 1208 | 14.57 | 1.27 (0.94 to 1.72) | 0.114 | 1.70 (1.13 to 2.54) | 0.010 |
*Total for each risk factor is different due to difference in missing values.
†Model adjusted for all the variables.
Values that are statistically significant at less than 0.02 for the crude OR and less than 0.05 for the adjusted OR are in bold font.
EE, eczema ever; ETS, environmental tobacco smoke.