An observational study in Asthma and Lung Diseases, sponsored by National Heart, Lung, and Blood Institute (NHLBI). Completed. Open to male participants aged Up to 100 Years. Per ClinicalTrials.gov, last updated 2016-03-16.
Sponsored by National Heart, Lung, and Blood Institute (NHLBI) · Observational
To identify risk factors for work disability among adults with asthma treated by pulmonary and allergy specialists.
BACKGROUND:
Disability among those with asthma is common and costly. Little is known about the causes of disability in asthma; experience with other chronic diseases suggests that illness severity alone does not adequately predict disability. There is a theoretical and experimental basis upon which to postulate that other variables, including factors such as job flexibility, asthma self-efficacy, social supports, and cigarette smoking may be predictors of disability in asthma. The study helped to explain the inter-relationships among illness severity, other co-factors and disability in asthma, addressing a major research gap.
DESIGN NARRATIVE:
The study was a cross-sectional survey, including retrospective work history data. A random sample was conducted of 40 board certified pulmonologists in Northern California enrolling persons with asthma. Pulmonologists maintained a log of all persons meeting a clinical definition of asthma presenting to their offices for treatment over a one month period. A total of 601 subjects with any history of laborforce participation were interviewed by a trained survey worker in order to assess severity of disease using a severity scale based on symptoms, medications, and past-asthma history. The computer-assisted, telephone-administered interviews used established survey instruments to assess psychosocial variables, smoking exposure and work history.
The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.
3,921 studies on the registry are indexed under Asthma; 507 are open to participants now.
Browse Asthma studies →National Heart, Lung, and Blood Institute (NHLBI) is the lead sponsor of 1,117 studies on the registry; 71 are open to participants now.
Of its 57 completed or terminated interventional studies of FDA-regulated products, 49 (86%) have results posted.
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No eligibility criteria
No study locations are listed for this record.
This study is completed, as verified in May 2000. You cannot join it, but the record below documents what was studied.
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National Heart, Lung, and Blood Institute (NHLBI)