Abstract:
:The Baltimore-Washington Infant Study, a case-control study of congenital heart defects in liveborn infants conducted in 1981--1989, interviewed parents about a wide range of environmental exposures that occurred during and before the pregnancy. In the period 1987--1989, the questionnaire was expanded to include a detailed inquiry about exposures to pesticides. An analysis of these latter data revealed an association of maternal exposure to any pesticides during the first trimester with transposition of the great arteries in their infants (TGA; n = 66 infants), relative to 771 control infants, with an odds ratio of 2.0 (95% confidence interval (CI): 1.2, 3.3). No other heart defects were associated with pesticides. When analyzed by type of pesticide and adjusted for covariates, there were associations of TGA with maternal exposures to herbicides (odds ratio (OR) = 2.8; 95% CI: 1.3, 7.2) and to rodenticidal chemicals (OR = 4.7; 95% CI: 1.4, 12.1) but not to insecticides (OR = 1.5; 95% CI: 0.9, 2.6). No data were collected on specific chemicals or brand names. These results raise new questions about the possible epidemiologic association of TGA with some classes of pesticides and warrant new, carefully targeted investigations.
journal_name
Am J Epidemioljournal_title
American journal of epidemiologyauthors
Loffredo CA,Silbergeld EK,Ferencz C,Zhang Jdoi
10.1093/aje/153.6.529subject
Has Abstractpub_date
2001-03-15 00:00:00pages
529-36issue
6eissn
0002-9262issn
1476-6256journal_volume
153pub_type
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