Table 4.

Frequency of asthma-related outcomes by work tasks.

Asthma-related Outcomes	Total N = 2030		Clean fixed surfaces N = 1291		Sterilize medical equipment N = 301		Administer aerosolized drugs N = 395		Use chemicals on patients N = 646
	n (mean, SEM)	%	n (mean, SEM)	%	n (mean, SEM)	%	n (mean, SEM)	%	n (mean, SEM)	%
Physician-diagnosed asthma	223	11	161	12	37	12	60	15	82	13
Post-hire asthma	103	5.1	74	5.7	15	5.0	26	6.6	40	6.2
Current asthma	173	8.5	129	10	25	8.3	48	12	64	9.9
Any exacerbation	74	3.6	58	4.5	5	1.7	21	5.3	30	4.6
Moderate exacerbation	41	2.0	34	2.6	3a	1.0	13	3.3	19	2.9
Severe exacerbation	33	1.6	24	1.9	2a	0.7	8	2.0	11	1.7
BHR-related symptoms	522	26	363	28	95	32	105	27	175	27
Asthma symptom score (mean, SEM)	(0.46, 0.02)		(0.55, 0.03)		(0.55, 0.06)		(0.55, 0.05)		(0.50, 0.04)
Asthma symptom score, n and %
0	1511	74	922	71	210	70	280	71	468	72
1	277	14	192	15	52	17	59	15	95	15
2	115	5.7	83	6.4	19	6.3	30	7.6	48	7.4
3	63	3.1	48	3.7	10	3.3	15	3.8	15	2.3
4	35	1.7	24	1.9	5	1.7	3a	0.8	10	1.5
5	29	1.4	22	1.7	5	1.7	8	2.0	10	1.5
Wheezing or whistling in last 12 months	291	14	206	16	42	14	73	18	100	15

^aCell has < 5 participants with the outcome.