Table 3 Risk excess for house calls for asthma, upper and lower respiratory diseases following a 10 μg/m³ increase in NO₂, PM_2.5 and PM₁₀ levels (lag 0–3).

Risk excess (%)	URD (95% CI)	LRD (95% CI)	Asthma (95% CI)
NO2 (µg/m3)	0.7 (−0.9 to 2.3)	1.1 (−0.7 to 2.9)	−0.3 (−3.3 to 2.7)
PM25. (µg/m3)	6.0 (3.1 to 9.1)	5.8 (2.8 to 8.9)	4.4 (−1.3 to 10.4)
PM10 (µg/m3)	2.9 (0.8 to 5.1)	3.1 (0.9 to 5.4)	2.5 (−1.7 to 6.8)

NO₂, nitrogen dioxide; LRD, lower respiratory disease; URD, upper respiratory disease.