Parental Exposure to Carcinogens and Risk for Childhood Acute Lymphoblastic Leukemia, Colombia, 2000-2005 >> Preventing Chronic Disease: September 2011: 10_0201

Suggested citation for this article: Castro-JimГ©nez MA, Orozco-Vargas LC.Parental exposure to carcinogens and risk for childhood acute lymphoblastic leukemia, Colombia, 2000-2005.Prev Chronic Dis 2011;8(5):A106.http://www.cdc.gov/pcd/issues/2011/sep/10_0201.htm.Accessed [date].

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Abstract
Introduction
The objective of this study was to determine the risk factors for childhood acute lymphoblastic leukemia (ALL) and, in particular, the role of parental occupational exposure to carcinogenic and probably carcinogenic hydrocarbons before the child’s conception.

Methods
For this case-control study, cases were children younger than 15 years who were newly diagnosed with ALL between January 2000 and March 2005 at 1 of 6 Colombian hospitals.An interview with both parents of 170 children (85 cases and 85 individually matched neighborhood controls) gathered information about each child’s exposures and parental demographic and occupational characteristics, medical history, health risk behaviors, and pregnancy and birth history.A job-exposure matrix was used to cla*sify parental exposure to hydrocarbons on the basis of the main industrial activity of each workplace where parents worked before (both parents) or during the index pregnancy (mother only).Conditional odds ratios and 95% confidence intervals were calculated by period of exposure (preconception, pregnancy, and childhood).

Results
The risk of childhood ALL was linked to 1) parental occupational exposure to hydrocarbons before conception, 2) parental smoking before conception, 3) maternal low socioeconomic status during pregnancy, and 4) higher maternal age (в