Maternal unemployment: an indicator of spontaneous preterm delivery risk
- 180 Downloads
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 ≥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.
KeywordsMaternal occupation Preterm Risk factors Unemployment
The Authors gratefully acknowledge a grant from Comissão de Fomento da Investigação em Cuidados de Saúde, Ministério da Saúde P·I. 167/97.
- 5.Martius JA, Steck T, Oehler MK, et al. Risk factors associated with preterm (<37 + 0 weeks) and early preterm birth (<32 + 0 weeks): univariate and multivariate analysis of 106 345 singleton births from the 1994 state wide perinatal survey of Bavaria. Eur J Obstet Gynecol Reprod Biol. 1998;80:183–9. doi: 10.1016/S0301-2115(98)00130-4.PubMedCrossRefGoogle Scholar
- 15.Instituto Nacional de Estatística. Estatísticas demográficas. Lisboa.1970–2004.Google Scholar
- 17.Estatísticas do Emprego 1995 e 2004. Instituto Nacional de Estatística.Google Scholar
- 18.Ministério do Emprego e da Segurança Social. Decreto-Lei no154/88 de 29 de Abril e nº 77/2005 de 13 de Abril.Google Scholar