Occupational Asthma Reference
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Gassert TH, Hu H, Kelsey KT, Christiani DC,
Long-term health and employment outcomes of occupational asthma and their determinants,
J Occup Environ Med,
1998;40:481-491,
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Keywords: USA, occupational asthma, prognosis, fu
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Abstract
Occupational asthma is common, yet little is known about long-term outcomes in the United States. A case series of 55 (of 72) occupational asthma patients were interviewed in follow-up 31 (+/-15) months after removal from the cause to evaluate asthma severity and employment outcomes. Standard criteria were used to rate severity. At follow-up, 54 subjects (98%) had active asthma, of which 26 cases (47%) were "severe." Multivariate analysis showed increased risk of "severe" asthma for women (odds ratio [OR] = 13.8; 95% confidence interval [95% CI] = 1.3 to 151.7) and industrial sector workers (OR = 11.9; 95% CI = 1.3 to 109.8). Thirty-eight subjects (69%) were unemployed, risk being greater for those with "severe" asthma (OR = 20.9; 95% CI = 1.9 to 229.8) and for those without a college degree (OR = 7.3; 95% CI = 1.2 to 43.4). These results indicate that occupational asthma is disabling and probably irreversible for most patients referred to a specialty clinic, despite prolonged removal from causative agents. Women, industrial workers, and those with severe asthma or lack of a college degree appear to be at risk for worse outcomes. Greater efforts at primary and secondary prevention should lessen the burden of long-term illness and unemployment due to occupational asthma
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