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0156 Predictors of sickness absence in pregnancy- a Danish cohort study
  1. Mette Lausten Hansen1,
  2. Ane Marie Thulstrup1,
  3. Jette Kolding Kristensen2,
  4. Mette Juhl3,
  5. Cecilia Høst Ramlau-Hansen4
  1. 1Department of Occupational Medicine, Danish Ramazzini Center, Aarhus University Hospital, Aarhus, Denmark
  2. 2Department of Public Health, Section of General Practice, Aarhus University, Aarhus, Denmark
  3. 3The Research Unit Women’s and Children’s Health, The Juliane Marie Center, Rigshospitalet, Copenhagen, Denmark
  4. 4Department of Public Health, Section for Epidemiology, Aarhus University, Aarhus, Denmark

Abstract

Objectives To investigate if parity, fertility treatment, body mass index (BMI), time to pregnancy (TTP), and engagement in physical exercise are risk factors for sickness absence during pregnancy weeks 10 to 30.

Method We use data from The Danish National Birth Cohort (DNBC) and the Danish Register for Evaluation of Marginalisation (DREAM). DNBC contains information on 100 418 pregnancies included from 1996 until 2002. Around pregnancy weeks 12–16 the participants were interviewed by telephone and provided information on potential predictors, on occupational exposures, lifestyle factors and health. We excluded women, who were no longer pregnant at the time of the interview, were unemployed, multiple pregnant or had an obstetrical event within one year before the DNBC pregnancy. This resulted in a study population of 65 047 pregnancies. Outcome data were retrieved from DREAM, which contains information on sickness absence on a weekly basis. Data will be analysed using multivariate logistic regression models.

Results Mean age of the participants was 30.5 years, 46% were nulliparous, 6.3% received fertility treatment, mean BMI was 23.6 kg/m2. Prevalence of sickness absence until pregnancy week 30 was 36%. Preliminary results indicate that sickness absence is related to fertility treatment and obesity. Women receiving fertility treatment had increased odds of sickness absence in pregnancy week 30; OR: 1.31 (95% CI: 1.21–1.42). Obese women had increased odds of sickness absence compared to normal weight women; OR: 1.37 (95% CI: 1.28–1.48). More statistical analyses will be conducted.

Conclusions Final results and conclusions will be presented at the conference.

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