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Table 3 Prevalence of DSM-IV insomnia at week 8 and year 2 postpartum according to insomnia status at week 32 of pregnancya

From: Trajectories of maternal sleep problems before and after childbirth: a longitudinal population-based study

  Week 8 postpartum nb (%) Year 2 postpartum nb (%)
Week 32 of pregnancy, n (%) No insomnia Insomnia No insomnia Insomnia
No insomnia, 1145 (39.2 %) 407/787 (51.7 %) 380/787 (48.3 %) 518/690 (75.1 %) 172/690 (24.9 %)
Insomnia, 1778 (60.8 %) 372/1168 (31.8 %) 796/1168 (68.2 %) 495/990 (50.0 %) 495/990 (50.0 %)
  1. aData are based on all available cases at each time point
  2. bDenominators represent available cases at the given time point