Table 8.

Comparison of estimated citywide annual burden of ozone using quarterly and annual average incidence rates

		Attributable counts		Attributable rate per 100,000 persons
Health effect	Risk estimate	Ozone season estimate derived from quarterly rates	Ozone season estimate derived from annual incidence rate	Annual estimate derived from quarterly rates (95 % CI)	Annual estimate derived from annual incidence rate (95 % CI)
Mortality (all ages)	Ozone season	400 (200, 600)	420 (210, 630)	5.1 (2.6, 7.5)	5.2 (2.6, 7.7)
Hospital admissions-asthma (all ages)		870 (500, 1,220)	1,000 (590, 1,450)	11 (6.1, 15)	13 (7.2, 18)
Emergency department visits for asthma (all ages)		4,610 (3,340, 5,840)	5,310 (3,850, 6,730)	57 (41, 72)	65 (47, 82)