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. 2015 Aug 1;38(8):1237-45.
doi: 10.5665/sleep.4900.

Trajectories of Sleep Quality and Associations with Mood during the Perinatal Period

Lianne M Tomfohr  1   2   3 , Elena Buliga  1 , Nicole L Letourneau  4 , Tavis S Campbell  1 , Gerald F Giesbrecht  1   2   3
Affiliations

Trajectories of Sleep Quality and Associations with Mood during the Perinatal Period

Lianne M Tomfohr et al. Sleep. .

Abstract

Objective: The aim of this study was to investigate trajectories of sleep quality and associations with mood in the perinatal period. Although it is commonly accepted that subjective sleep quality declines during pregnancy and the transition to parenthood, some women may follow qualitatively distinct trajectories.

Design, setting, and participants: Sleep quality was assessed by the Pittsburgh Sleep Quality Index (PSQI). Data were collected from 293 women at four time points: during early pregnancy, at Time 1 (T1; < 22 w gestational age [GA]; late pregnancy, at Time 2 (T2; 32 w GA); during the postnatal period at Time 3 (T3; 3 mo postpartum); and Time 4 (T4; 6 mo postpartum). A group-based semiparametric mixture model was used to estimate patterns of sleep quality throughout the perinatal period.

Results: Four trajectory groups were identified, including patterns defined by high sleep quality throughout (21.5%), mild decrease in sleep quality (59.5%), significant decrease in sleep quality (12.3%) and a group with poor sleep quality throughout (6.7%). Women who had the worst sleep quality at Time 1 and those who experienced significant increases in sleep problems throughout pregnancy were also the groups who reported the highest levels of anxiety and depressive symptoms in early pregnancy and the lowest levels of social support. After controlling for covariates, the groups with worst subjective sleep quality during pregnancy were also the most likely to experience high symptoms of depression in the postpartum period.

Conclusions: Most of the women in our sample reported mild sleep disturbances through the perinatal period. A subgroup of women reported a significant decline in sleep quality from early to late pregnancy and another reported poor subjective sleep quality throughout pregnancy; these groups had the greatest risk of experiencing high symptoms of depression in the postpartum period.

Keywords: depression; postpartum; pregnancy; sleep; trajectories.

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Figures

Figure 1
Figure 1
Trajectory of sleep quality over time: four-group model.
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