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Exposure to farm crops, livestock, and farm tasks and risk of glioma. The Upper Midwest Health Study.

Authors
Ruder-AM; Carreon-T; Butler-MA; Calvert-GM; Davis-King-KE; Waters-MA; Schulte-PA; Mandel-JS; Morton-RF; Reding-DJ; Rosenman-KD; Brain Cancer Collaborative Study Group
Source
Am J Epidemiol 2009 Jun; 169(12):1479-1491
NIOSHTIC No.
20035505
Abstract
Some studies of brain cancer have found an excess risk for farmers. The National Institute for Occupational Safety and Health previously found no increased glioma risk for ever (vs. never) being exposed to pesticides on a farm among 798 cases and 1,175 population-based controls (adult (ages 18-80 years) nonmetropolitan residents of Iowa, Michigan, Minnesota, and Wisconsin). For this analysis (1995-1998), 288 cases and 474 controls (or their proxies) who had lived on farms at age 18 years or after were asked about exposure to crops, livestock, and farm tasks. Logistic regression was used to calculate odds ratios adjusted for age, age group, sex, state, and education. Never immediately washing up (adjusted odds ratio (OR) 3.08, 95% confidence interval (CI): 1.78, 5.34) or changing clothes (OR 2.84, 95% CI: 1.04, 7.78) after applying pesticides was associated with increased glioma risk. Living on a farm on which corn, oats, soybeans, or hogs were raised was associated with decreased risk (corn - OR 0.37, 95% CI: 0.20, 0.69; oats - OR 0.63, 95% CI: 0.40, 1.00; soybeans - OR 0.69, 95% CI: 0.48, 0.98; hogs - OR 0.63, 95% CI: 0.43, 0.93). Negative associations may be due to chance or a ''healthy farmer'' effect. Farmers' increased risk of glioma may be due to work practices, other activities, or an inverse association with allergies (reported by other investigators).
Keywords
Epidemiology; Demographic-characteristics; Agricultural-workers; Agricultural-chemicals; Farmers; Age-factors; Sex-factors; Racial-factors; Pesticides-and-agricultural-chemicals; Pesticides; Author Keywords: agriculture; animals; domestic; brain neoplasms; case-control studies; cropsp agricultural; glioma; occupational exposure; pesticides
Contact
Dr. Avima M. Ruder, Division of Surveillance, Hazard Evaluations and Field Studies, National Institute for Occupational Safety and Health, 4676 Columbia Parkway, Mailstop R-16, Cincinnati, OH 45226
CODEN
AJEPAS
Publication Date
20090601
Document Type
Journal Article
Email Address
amr2@cdc.gov
Fiscal Year
2009
NTIS Accession No.
NTIS Price
Issue of Publication
12
ISSN
0002-9262
NIOSH Division
DSHEFS; DART; EID
Priority Area
Agriculture, Forestry and Fishing; Manufacturing
Source Name
American Journal of Epidemiology
State
OH; MN; IA; MI
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