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Objective: The objective of this study was to evaluate work-related asthma among health maintenance organization (HMO) members. Recent reports suggest that the incidence of work-related asthma may be much higher than Sentinel Event Notification Systems for Occupational Risks (SENSOR) data estimate., Methods: Using the HMO's electronic medical record, we identified 1,747 persons with evidence of new or recurrent asthma. Interviews with 352 of them elicited information about workplace exposures, symptoms, and home environment. Industrial hygienists rated the potential asthmagenicity of the respondents' work environments., Results: Based on the industrial hygienist ratings and self-reported work-relatedness of asthma symptoms, we classified 33% of those interviewed as having potentially work-related asthma, suggesting an overall work-related asthma incidence/recurrence rate of 28 cases per 10,000., Conclusions: The contribution of occupation to the occurrence of adult onset asthma may be much higher than typically suggested in the literature.

The preponderance of literature supports the efficacy of specialist care for asthma. Not every patient with asthma needs to be treated by a specialist, however. An optimal health care delivery model for asthma (i.e. one that provides high quality care that is cost effective) requires some mix of primary and specialty services. A tiered model of care in which the primary care physician acts as the first point of contact and decision-maker with regard to referral and that includes asthma specialists, including allergists, pulmonologists, and other health care professionals with expertise in asthma, appears to be a reasonable solution. The number of studies that compare various models for organizing asthma care is limited, however. Thus, further research is needed to determine how best to align the roles of primary care physicians, allied health professionals, and subspecialists in order to ensure seamless communication and cost-effective care that is targeted to individual patient needs.