Table 6A.
Relative risks (RR) for asthma admissions for a 10 (PM10) or 5 unit (NO2) and IQR, adjusted for day of the week, national holiday, temperature, humidity, season and wind speed, 2017–2019: two-pollutant model* results (children; 0–4 years)
| RR | 95% CI | P value | |
| PM10 (10 µg/m3 increase) | 0.97 | 0.95 to 0.99 | 0.028 |
| NO2 (5 µg/m3 increase) | 0.98 | 0.96 to 0.99 | 0.011 |
| PM10 (IQR; 25.1 µg/m3) | 0.93 | 0.87 to 0.99 | 0.029 |
| NO2 (IQR; 16.5 µg/m3) | 0.93 | 0.88 to 0.99 | 0.012 |
*PM10 and NO2 mutually adjusted for; collinearity of variables was not found (variance inflation factors (VIF)>4 observed in linear regression analysis when PM10 and PM2.5 included in the same model).