Table 2

Incidence rates (number of cases/1000 person-years) (95% CIs) of asthma and rhinitis in bakers, school controls, and population controls, and number of cases/sum of person-years

		Bakers		School controls	Population controls
		When bakers	When in other occupations	School controls	Population controls
Asthma:
Men:
Incidence	3.0	1.0	1.1	1.9
95% CI	1.7 to 4.2	0.3 to 1.5	0.3 to 1.8	0.9 to 2.8
Cases/person-years	22/7400	9/9806	8/7473	14/7530
Women:
Incidence	2.9	2.3	2.9	3.0
95% CI	0.9 to 4.8	1.0 to 3.6	1.2 to 4.5	1.3 to 4.6
Cases/person-years	8/2810	12/5260	12/4195	12/4044
Rhinitis:
Men:
Incidence	29.4	10.1	11.1	10.1
95% CI	25.1 to 33.7	8.0 to 12.3	8.6 to 13.6	7.7 to 12.5
Cases/person-years	179/6097	87/8591	73/6577	68/6747
Women:
Incidence	30.1	12.8	16.3	15.6
95% CI	23.3 to 37.0	9.5 to 16.1	12.2 to 20.4	11.5 to 19.7
Cases/person-years	74/2456	59/4610	60/3680	56/3596