Table 2 Prevalence of respiratory symptoms and asthma with reference to ETS exposure at home
From: Pulmonary effects of passive smoking: the Indian experience
| Â | Exposed (n = 2574) | Unexposed (n = 6516) | Crude O.R. (95% C.I.) * | Age and sex adjusted O.R. (95% C.I.) * |
|---|---|---|---|---|
Asthma (questionnaire diagnosis) | 84 (3.3%) | 121 (1.9%) | 1.783 (1.345–2.364) | 1.780 (1.340–2.364) |
Symptoms | Â | Â | Â | Â |
   Wheeze | 226 (8.8%) | 364 (5.6%) | 1.627 (1.369–1.933) | 1.605 (1.349–1.910) |
   Chest tightness | 220 (8.5%) | 345 (5.3%) | 1.671 (1.402–1.992) | 1.690 (1.417–2.017) |
   Dyspnea on exertion | 425 (16.5%) | 676 (10.4%) | 1.708 (1.499–1.948) | 1.689 (1.481–1.927) |
   Dyspnea at rest | 129 (5.0%) | 207 (3.2%) | 1.608 (1.284–2.013) | 1.671 (1.333–2.095) |
   Dyspnea at night | 134 (5.2%) | 205 (3.1%) | 1.690 (1.353–2.112) | 1.702 (1.360–2.129) |
   Cough at night | 355 (13.8%) | 556 (8.5%) | 1.715 (1.488–1.976) | 1.754 (1.521–2.023) |
   Cough in morning | 210 (8.2%) | 308 (4.7%) | 1.790 (1.493–2.047) | 1.763 (1.469–2.117) |
   Phlegm in morning | 384 (14.9%) | 586 (9.0%) | 1.773 (1.545–2.035) | 1.761 (1.533–2.023) |
   Phlegm for >3 months | 152 (6.7%) | 224 (4.0%) | 1.698 (1.374–2.099) | 1.719 (1.388–2.129) |
   Chest tightness on exposure to allergens | 425 (16.5%) | 526 (8.1%) | 2.252 (1.964–2.583) | 2.245 (1.956–2.577) |
   Dyspnea on exposure to allergens | 432 (16.8%) | 658 (10.1%) | 1.796 (1.575–2.047) | 1.881 (1.648–2.147) |