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Influence of occupational factors on lung function in French dairy farmers. A 5-year longitudinal study
A G Venier1, H Chaudemanche, E Monnet
1Department of Public Health, Clinical Epidemiology Unit, University Hospital, Besançon, France.
Background:
Dairy farming is associated with a high prevalence of respiratory disorders but the respective influence of occupational exposures, environmental, and individual factors on lung function remain unclear.
Methods:
In 1994 and 1999, dairy farmers were examined in the Doubs province, France. Spirometric measures and allergological tests were performed. Medical and professional data were obtained by questionnaires. A multiple linear regression analysis was performed.
Results:
An accelerated decline in lung function parameters was associated with age, male sex, traditional farm (as opposed to modern farms), and a high rate of total IgE (P < 10(-2)). Blood oxygen saturation (SpO2) was significantly positively linked with the modernization of the farm and negatively with age, smoking status, and log IgE (P < 10(-2)). Geographical factors (altitude and climatic conditions) had no significant effect.
Conclusions:
The modernization of the farm has an important and beneficial impact on lung functiony.
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