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Prevalence of chronic respiratory symptoms among Ohio cash grain farmers.

Authors
Wilkins-JR 3rd; Engelhardt-HL; Rublaitus-SM; Crawford-JM; Fisher-JL; Bean-TL
Source
Am J Ind Med 1999 Feb; 35(2):150-163
NIOSHTIC No.
20030832
Abstract
BACKGROUND: The prevalence of chronic cough, chronic phlegm, dyspnea, and non-cold wheeze was estimated from a mixed-mode survey of Ohio cash grain farmers in 1993. METHODS: Personal characteristics of the principal operators (POs) such as age and cigarette smoking, in addition to selected farm characteristics and relevant medical and work history factors potentially associated with both exposure to respiratory irritants and subsequent respiratory symptoms were considered. RESULTS: The overall design-adjusted prevalences (and the corresponding 95% confidence intervals (CIs) were: 9.4% (7.6-11.1%) for chronic cough, 10.8% (9.0-12.6%) for chronic phlegm, 16.2% (14.1-18.3%) for dyspnea, and 8.1% (6.4-9.8%) for non-cold wheeze. In univariate and multivariate analyses, smoking status was found, not surprisingly, to be the strongest predictor of increased symptom prevalence compared to all other factors. Other non-occupational factors found associated with increased symptom prevalence include age (cough, phlegm, dyspnea) and pet allergy (non-cold wheeze). Occupational factors found at least weakly associated with increased symptom prevalence include lifetime hours of cab tractor operation (cough); percent time spent farming (phlegm); having livestock other than cattle, cows, and calves (dyspnea); acres of corn for silage or green chop (cough); acres of alfalfa hay (non-cold wheeze); and personal involvement with pesticides (cough). CONCLUSIONS: Symptom prevalences reported here are consistent with previous findings from studies of other groups of farmers. Results pertaining to factors found associated with symptom prevalences should be interpreted in light of several sources of potential bias.
Keywords
Agricultural-industry; Agricultural-chemicals; Agricultural-workers; Agricultural-processes; Pulmonary-system-disorders; Respiratory-system-disorders; Epidemiology; Statistical-analysis; Demographic-characteristics; Author Keywords: respiratory disease; agricultural safety and health; agriculture; respiratory hazards comprehensive
Contact
Division of Epidemiology and Biometrics, School of Public Health, Ohio State University, Columbus, USA
CODEN
AJIMD8
Publication Date
19990201
Document Type
Journal Article
Email Address
wilkins.2@osu.edu
Funding Amount
660315
Funding Type
Cooperative Agreement
Fiscal Year
1999
NTIS Accession No.
NTIS Price
Identifying No.
Cooperative-Agreement-Number-U04-CCU-506088
Issue of Publication
2
ISSN
0271-3586
Source Name
American Journal of Industrial Medicine
State
OH
Performing Organization
The Ohio State University Research Foundation
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