Prevalence of each dependent variable and some independent factors in the analysis
| Variable | Men(N = 556) | Women(N = 676) |
|---|---|---|
| BHR, bronchial hyperresponsiveness; BMI, body mass index; FEV1, forced expiratory volume in 1 second. | ||
| *Microwave oven, gas fuelled water heater device, washing machine, refrigerator. | ||
| Wheeze in last 12 months | 147 (26.4%) | 189 (28.0%) |
| Woken by breathlessness in last 12 months | 58 (10.4%) | 111 (16.4%) |
| Positive BHR | 45 (8.1%) | 111 (16.4%) |
| Atopic to at least 1 allergen | 159 (28.6%) | 186 (27.5%) |
| Duration of breast feeding | ||
| Did not breast feed | 10 (1.8%) | 21 (3.1%) |
| <1 month | 206 (37.1%) | 221 (32.7%) |
| ⩾1 month | 287 (51.6%) | 353 (52.2%) |
| Not known | 53 (9.5%) | 81 (12.0%) |
| Current smokers | 379 (68.2%) | 344 (50.9%) |
| No of possessions* | ||
| 0 or 1 | 76 (13.7%) | 101 (14.9%) |
| 2 | 174 (31.4%) | 240 (35.5%) |
| 3 or 4 | 305 (55.0%) | 335 (49.6%) |
| No of siblings | ||
| 0 or 1 | 77 (13.9%) | 90 (13.4%) |
| 2 or 3 | 242 (43.6%) | 281 (41.8%) |
| ⩾4 | 236 (42.5%) | 301 (44.8%) |