OBJECTIVE: Past studies have reported associations between pesticide exposure and the risk of systemic lupus erythematosus (SLE). Residential pesticide exposure has been less well studied than agricultural exposure. The purpose of this study was to assess SLE risk associated with residential pesticide exposure in an urban population of predominantly African-American women. METHODS: Adult women with SLE were identified from six hospital databases and community screening in three neighborhoods in Boston, Massachusetts, USA. Controls were adult women volunteers from the same neighborhoods who were screened for the absence of connective tissue disease and anti-nuclear antibodies. Subjects were considered exposed to pesticides if they had ever had an exterminator for an ant, cockroach, or termite problem prior to SLE diagnosis or corresponding reference age in controls. Risks associated with pesticide exposure were analyzed using multivariable logistic regression models, adjusted for sociodemographic factors. RESULTS: We identified 93 SLE subjects and 170 controls with similar baseline characteristics. Eighty-three per cent were African-American. Pesticide exposure was associated with SLE, after controlling for potential confounders (odds ratio 2.24, 95% confidence interval 1.28-3.93). CONCLUSION: Residential exposure to pesticides in an urban population of predominantly African-American women was associated with increased SLE risk. Additional studies are needed to corroborate these findings.
OBJECTIVE: Past studies have reported associations between pesticide exposure and the risk of systemic lupus erythematosus (SLE). Residential pesticide exposure has been less well studied than agricultural exposure. The purpose of this study was to assess SLE risk associated with residential pesticide exposure in an urban population of predominantly African-American women. METHODS: Adult women with SLE were identified from six hospital databases and community screening in three neighborhoods in Boston, Massachusetts, USA. Controls were adult women volunteers from the same neighborhoods who were screened for the absence of connective tissue disease and anti-nuclear antibodies. Subjects were considered exposed to pesticides if they had ever had an exterminator for an ant, cockroach, or termite problem prior to SLE diagnosis or corresponding reference age in controls. Risks associated with pesticide exposure were analyzed using multivariable logistic regression models, adjusted for sociodemographic factors. RESULTS: We identified 93 SLE subjects and 170 controls with similar baseline characteristics. Eighty-three per cent were African-American. Pesticide exposure was associated with SLE, after controlling for potential confounders (odds ratio 2.24, 95% confidence interval 1.28-3.93). CONCLUSION: Residential exposure to pesticides in an urban population of predominantly African-American women was associated with increased SLE risk. Additional studies are needed to corroborate these findings.
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