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Responses to a self-administered questionnaire and their relationship to lung function and radiographic pneumoconiosis among us coal miners.
Wang M; Beeckman-Wagner L; Wolfe A; Petsonk E
Am J Epidemiol 2009 Jun; 169(S11):S25
Rationale: Respiratory symptom questionnaires (RSQ) are often used in assessing the health of individuals exposed to respiratory hazards. Methods: To investigate the validity of items fiom a self-administered standardized RSQ, we studied RSQ responses and results of spirometry and chest x-ray films (CXR) among 3376 underground coal miners who had participated in the NIOSH Enhanced Coal Workers' Health Surveillance Program fiom September 2005 to November 2007. Spirometry was conducted and interpreted in accordance with American Thoracic Society/European Respiratory Society guidelines. CXR were classified for coal workers' pneumoconiosis (CWP) using the International Labour Office system. For each symptom item, individuals who responded 'Yes' were compared to those who said 'No', assessing differences in mean spirometry values, the proportion of abnormal spirometry and CWP, using t-test and Chi-square statistics, respectively. Prevalence ratio regression analysis was performed to investigate associations, controlling for age, smoking, and body mass index. Results: Cough, phlegm, wheeze, shortness of breath (SoB), attacks of SoB with wheezing (SoBWZ), chest tightness (ChT), and doctor-confirmed emphysema (Em) were higWy associated (p<O.OOOI) with reduced lung function, increased proportion of abnormal spirometry and CWP. Model results indicated that abnormal spirometry was higWy associated with cough, pWegm, wheeze, SoB, SoBWZ, ChT, and doctor-confirmed chronic bronchitis; while CWP was related to cough, SoB, SoBWZ, ChT, and Em. Em was 2 and 3 times more likely in participants with abnormal spirometry (p=0.0016) and CWP (p<O.OOOI), respectively. Conclusion: Self-reported respiratory symptoms and illnesses are higWy associated with spirometry abnormalities and radiographic CWP. These standardized RSQ items are valid for medical screening and research.
Biological-effects; Biological-monitoring; Biological-systems; Coal-miners; Epidemiology; Exposure-assessment; Exposure-levels; Exposure-methods; Health-hazards; Health-surveys; Inhalation-studies; Lung; Lung-disease; Lung-disorders; Mathematical-models; Miners; Mortality-data; Occupational-exposure; Occupational-hazards; Occupational-health; Occupational-health-programs; Occupational-respiratory-disease; Pneumoconiosis; Pulmonary-disorders; Pulmonary-function; Pulmonary-function-tests; Pulmonary-system-disorders; Questionnaires; Respiratory-hypersensitivity; Respiratory-irritants; Respiratory-system-disorders; Risk-analysis; Safety-practices; Statistical-analysis; Surveillance-programs; Work-analysis; Work-environment; Worker-health; Workplace-studies
Mei Lin Wang, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Division of Respiratory Disease Studies, Morgantown, WV 26505
American Journal of Epidemiology. Abstracts of the 42nd Annual Meeting society for Epidemiologic Research Anaheim, California, June 23-26, 2009