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Self-reported asthma in relation to the presence of central heating. Odds ratio for self-reported asthma with regard to the presence of central heating
| Central heating in the building | Self-reported asthma | Odds ratio (OR) | 95% confidence interval (CI) for OR | P-value of χ2 test | ||
|---|---|---|---|---|---|---|
| No | Yes | |||||
| No | 2022 | 140 | ||||
| Yes | 15720 | 720 | 0.6615 | 0.55 | 0.7974 | 1.28e–5 |
