Mean odds ratios (per 10 μg/m3 increase in NO2, from single-pollutant model), categorised by potential effect modifiers for selected outcomes
| Pet allergy | Hay fever | Itchy rash | Asthma | Bronchitis | |
|---|---|---|---|---|---|
| “H” indicates heterogeneity between study-specific results (p<0.10). | |||||
| *Borderline significant effect modification (p<0.10). | |||||
| Asthmatic status (parent) | |||||
| Asthmatic | 1.26 (0.94–1.69) | 1.11 (0.98–1.25) | 1.00 (0.91–1.10) | 1.05 (0.86–1.28) | 1.07 (0.73–1.55) |
| Non-asthmatic | 1.14 (0.93–1.39) | 1.04 (0.92–1.17) | 1.06 (0.96–1.17) | 1.02 (0.95–1.08) | 0.97 (0.89–1.07) |
| Sex | |||||
| Male | 1.15 (0.96–1.37) | 1.01 (0.89–1.15) | 1.10 (0.98–1.24) | 1.02 (0.91–1.15) | 0.99 (0.90–1.08) |
| Female | 1.10 (0.97–1.24) | 1.09 (1.00–1.18) | 0.99 (0.94–1.04)* | 1.03 (0.96–1.11) | 0.99 (0.86–1.13) |
| Age (years) | |||||
| 6–8 | 1.07 (0.96–1.20) | 1.00 (0.93–1.08) | 1.03 (0.99–1.08) | 0.97 (0.91–1.04) | 0.98 (0.84–1.15) |
| 9–12 | 1.15 (0.96–1.37) | 1.08 (1.01–1.16) | 1.04 (0.94–1.14) | 1.10 (0.96–1.25) | 1.00 (0.91–1.10) |