Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
COMPLETED
OBSERVATIONAL
1992-09-30
1997-01-31
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
Related Clinical Trials
Explore similar clinical trials based on study characteristics and research focus.
Impact of Adult Asthma
NCT00005564
Community Based Study of Adult Onset Asthma
NCT00005544
Predictors of Hospital-Based Care in Asthma
NCT00005484
Risk Factors For Asthma in Laboratory Animal Allergy
NCT00005283
Endotoxin and Bronchial Inflammation in Asthma
NCT00005550
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
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.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
100 Years
MALE
No
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
National Heart, Lung, and Blood Institute (NHLBI)
NIH
References
Explore related publications, articles, or registry entries linked to this study.
Blanc PD, Cisternas M, Smith S, Yelin EH. Asthma, employment status, and disability among adults treated by pulmonary and allergy specialists. Chest. 1996 Mar;109(3):688-96. doi: 10.1378/chest.109.3.688.
Katz PP, Yelin EH, Smith S, Blanc PD. Perceived control of asthma: development and validation of a questionnaire. Am J Respir Crit Care Med. 1997 Feb;155(2):577-82. doi: 10.1164/ajrccm.155.2.9032197.
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
4369
Identifier Type: -
Identifier Source: org_study_id
More Related Trials
Additional clinical trials that may be relevant based on similarity analysis.