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Maternal unemployment: an indicator of spontaneous preterm delivery risk

Teresa Rodrigues1, Henrique Barros

  • 1Department of Hygiene and Epidemiology, University of Porto Medical School, Porto, Portugal Al. Prof. Hernani Monteiro, 4200-319, Porto, Portugal. tererod@med.up.pt

European Journal of Epidemiology
|August 22, 2008
PubMed

The aim of this study was to assess the association between maternal employment and preterm delivery. A nationwide case-control study was conducted in 25 Portuguese public maternities. During a 4-month period, 769 consecutive single spontaneous preterm (<37 gestation weeks) live births and 1,053 term singleton babies born immediately after each preterm, were evaluated. Information was obtained by attending physicians using a questionnaire, with special emphasis on maternal work characterization. Logistic regression odds ratios (OR) were adjusted for maternal age, marital status, education and obstetrical characteristics. Women entering pregnancy while unemployed presented a significantly increased risk of spontaneous preterm delivery (OR=1.5; 95% confidence interval (CI) 1.18-1.88). Weekly duration of work (<40 versus >or=40 h) had no significant effect on the occurrence of spontaneous preterm (OR=1.2; 95% CI 0.88-1.54). Unemployed women presented a significant increase in the risk of preterm delivery.

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