Journal Article

Occupational Exposure to Pesticides and Risk of Non-Hodgkin's Lymphoma

L. Fritschi, G. Benke, A. M. Hughes, A. Kricker, J. Turner, C. M. Vajdic, A. Grulich, S. Milliken, J. Kaldor and B. K. Armstrong

in American Journal of Epidemiology

Published on behalf of Johns Hopkins Bloomberg School of Public Health

Volume 162, issue 9, pages 849-857
Published in print November 2005 | ISSN: 0002-9262
Published online September 2005 | e-ISSN: 1476-6256 | DOI: http://dx.doi.org/10.1093/aje/kwi292
Occupational Exposure to Pesticides and Risk of Non-Hodgkin's Lymphoma

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Pesticide exposure may be a risk factor for non-Hodgkin's lymphoma, but it is not certain which types of pesticides are involved. A population-based case-control study was undertaken in 2000–2001 using detailed methods of assessing occupational pesticide exposure. Cases with incident non-Hodgkin's lymphoma in two Australian states (n = 694) and controls (n = 694) were chosen from Australian electoral rolls. Logistic regression was used to estimate the risks of non-Hodgkin's lymphoma associated with exposure to subgroups of pesticides after adjustment for age, sex, ethnic origin, and residence. Approximately 10% of cases and controls had incurred pesticide exposure. Substantial exposure to any pesticide was associated with a trebling of the risk of non-Hodgkin's lymphoma (odds ratio = 3.09, 95% confidence interval: 1.42, 6.70). Subjects with substantial exposure to organochlorines, organophosphates, and “other pesticides” (all other pesticides excluding herbicides) and herbicides other than phenoxy herbicides had similarly increased risks, although the increase was statistically significant only for “other pesticides.” None of the exposure metrics (probability, level, frequency, duration, or years of exposure) were associated with non-Hodgkin's lymphoma. Analyses of the major World Health Organization subtypes of non-Hodgkin's lymphoma suggested a stronger effect for follicular lymphoma. These increases in risk of non-Hodgkin's lymphoma with substantial occupational pesticide exposure are consistent with previous work.

Keywords: case-control studies; herbicides; lymphoma, non-Hodgkin; occupational exposure; pesticides; CI, confidence interval; DDT, dichlorodiphenyltrichloroethane; OR, odds ratio

Journal Article.  5505 words. 

Subjects: Public Health and Epidemiology

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