Table 2.

Number of deaths and mortality rates by asthma exposure in a Swedish cohort of 2 775 430 individuals

	All	No asthma	Asthma
n	6592	6044	548
Person years at risk	364.2	347.7	17.1
Mean follow-up time, years	13.7	13.7	14.6
Crude mortality rate (per 100 000 person years) (95% CI)	18.1 (17.6 to 18.5)	17.4 (17.0 to 17.8)	32.1 (29.5 to 34.9)