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Reproductive outcome in a cohort of male and female rubber workers: a registry study.

Författare

  • Kristina Jakobsson
  • Zoli Mikoczy

Summary, in English

PURPOSE: To investigate whether blue-collar employment in the Swedish rubber industry from 1973 onwards had a negative impact on reproductive health. METHODS: Pairs of mother and child, and triads of father-mother-child were obtained through linkage of a cohort of 18,518 rubber factory employees with the Swedish Population Registry. Birth outcomes were obtained from the Medical Birth Register for 17,918 children. For each child, parental employment as blue-collar rubber worker during the pregnancy and sperm maturation period was obtained from work-place records. Children to female food industry workers, in all 33,256, constituted an external reference group. RESULTS: The sex ratio was reversed, with odds ratio (OR) for having a girl was 1.15 (95% CI 1.02, 1.31) when the mother was exposed. When both parents were exposed, the OR was even higher, 1.28 (95% CI 1.02, 1.62). An increased risk of multiple births was observed when both parents were exposed, with OR 2.42 (95% CI 1.17, 5.01). Children with both maternal and paternal exposure had a reduced birth weight compared to the external reference cohort. After adjustment for smoking (available for births from 1983 onwards), ethnicity and sex, the difference between children (singletons, live births) with maternal and paternal exposure and external referents was -142 g (95% CI -229, -54). The adjusted OR for having a small-for-gestational-age child was 2.15 (95% CI 1.45, 3.18) when the mother was a rubber worker during the pregnancy. CONCLUSION: There were clear indications that reproductive outcome was adversely affected in rubber workers. The findings warrant further investigation with refinement of exposure indices and inclusion of other endpoints of reproductive health.

Publiceringsår

2009

Språk

Engelska

Sidor

165-174

Publikation/Tidskrift/Serie

International Archives of Occupational and Environmental Health

Volym

82

Dokumenttyp

Artikel i tidskrift

Förlag

Springer

Ämne

  • Environmental Health and Occupational Health

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1432-1246