Prevalence (%) of physician diagnosed asthma, allergic diseases, respiratory infections, and antibiotic treatment during previous year in homes with and without dampness according to atopic heredity
| Parental asthma or atopic disease | Visible mould or damp stains or water damage | No dampness |
p value (χ2test) | p value for interaction3-150 | ||
| Asthma | Yes | 7.4 (53/718) | 4.2 (149/3570) | 0.001 | 0.033 | |
| No | 1.7 (15/863) | 1.9 (102/5378) | 0.750 | |||
| Allergic rhinitis | Yes | 22.9 (164/717) | 19.7 (701/3561) | 0.053 | 0.942 | |
| No | 10.8 (93/860) | 9.2 (494/5363) | 0.135 | |||
| Allergic conjunctivitis | Yes | 12.1 (87/718) | 11.5 (410/3571) | 0.627 | 0.899 | |
| No | 6.3 (54/864) | 5.8 (311/5379) | 0.586 | |||
| Atopic dermatitis | Yes | 12.7 (91/717) | 10.9 (388/3560) | 0.165 | 0.596 | |
| No | 6.7 (58/860) | 5.2 (281/5355) | 0.073 | |||
| Common cold ⩾4 per year | Yes | 16.6 (119/717) | 14.1 (502/3562) | 0.082 | 0.547 | |
| No | 14.9 (128/860) | 11.6 (623/5365) | 0.006 | |||
| Other respiratory infection ⩾1 per year3-151 | Yes | 39.8 (266/669) | 37.5 (1247/3325) | 0.272 | 0.633 | |
| No | 35.0 (273/781) | 31.5 (1573/4990) | 0.056 | |||