Association of Occupational Exposure to Inhaled Agents in Operating Rooms With Incidence of Chronic Obstructive Pulmonary Disease Among US Female Nurses.

When the duration of ORN employment was examined, compared with those with no history of ORN employment, those who reported 15 or more years of exposure had the greatest risk of COPD in model 3 (HR, 1.46; 95% CI, 1.10-1.93); a significant trend was observed as the years of OR employment increased, although there was only an association for 15 or more years of employment (<5 years: HR, 1.05 [95% CI, 0.90-1.21]; 5 to 14 years: HR, 1.08 [95% CI, 0.83-1.40]) ( P = .03 for trend).

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