Abstract
OBJECTIVE: Agricultural health studies often use respiratory symptom report as a surrogate measure of disease and exposure; little data exists on the accuracy of symptom report in a work-motivated population. METHODS: Screening spirometry and telephone survey data for Kentucky male farmers >55 year (n = 134) in the NIOSH Farm Family Health and Hazard Surveillance Project were compared to investigate the accuracy of symptom report as a measure of respiratory disease risk in older farmers. RESULTS: The prevalence of reported obstructive respiratory symptoms was 0.24 (95% CI = 0.17 to 0.31); objective measures increased prevalence to 0.35 (95% CI = 0.27 to 0.43). Customary symptom questions did not reliably reflect objective indicators of respiratory impairment. CONCLUSIONS: Older farmers may not accurately report respiratory symptoms. Whether by intention or misinterpretation of physical cues, self-reporting errors in this population may introduce misclassification bias.
Original language | English |
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Pages (from-to) | 472-479 |
Number of pages | 8 |
Journal | Journal of Occupational and Environmental Medicine |
Volume | 51 |
Issue number | 4 |
DOIs | |
State | Published - Apr 2009 |
ASJC Scopus subject areas
- Public Health, Environmental and Occupational Health