Poor sleep and excessive weight gain of pregnant women are associated with maternal outcomes. However, it’s unknown regarding their effects of each other in pregnant women. This cohort study aimed to identify the trajectories of sleep quality and their associations with excessive gestational weight gain during pregnancy. Data of 403 pregnant women were collected at three visiting points: early pregnancy, between 10 and 17 weeks, mid-pregnancy, between 18 and 21 weeks, and late pregnancy: 28–32 weeks of pregnancy. Sleep quality was examined by the Pittsburgh sleep quality index. A semiparametric mixture model was used to estimate the patterns of sleep quality throughout the pregnancy. Two trajectories were identified as good-to-poor group (76.42%) and constant poor group (23.57%), respectively. It was observed that poor sleep quality was associated with excessive gestational weight gain in both groups. Poor sleep quality during late pregnancy in good-to-poor group predicted excessive gestational weight gain (adjusted Odds Ratio 3.47, 95% CI 1.25, 9.62). In contrast, the relationship was established even at mid-pregnancy in constant poor group (adjusted Odds Ratio 3.12, 95% CI 1.06, 9.19). Results from this study showed that most of pregnant women reported decreased sleep quality, however, a minority reported stable–poor sleep quality throughout pregnancy. Poor sleep quality was associated with excessive gestational weight gain during pregnancy. In comparison, those pregnant women with stable–poor sleep quality had a greater risk to get excessive gestational weight gain.

中文翻译：

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睡眠质量的轨迹以及与妊娠期体重过度增加的关联

孕妇睡眠不佳和体重增加过多与产妇结局有关。然而，它们对孕妇的影响尚不清楚。该队列研究旨在确定睡眠质量的轨迹及其与怀孕期间妊娠期体重过度增加的关系。在三个访问点收集了403名孕妇的数据：早孕、10-17周、孕中期、18-21周和孕晚期：孕28-32周。通过匹兹堡睡眠质量指数检查睡眠质量。半参数混合模型用于估计整个怀孕期间的睡眠质量模式。两个轨迹分别被确定为从良好到贫困的组 (76.42%) 和恒定贫困组 (23.57%)。据观察，两组的睡眠质量差都与妊娠期体重增加过多有关。好转贫困组妊娠晚期睡眠质量差可预测妊娠期体重增加过多（调整后的比值比 3.47，95% CI 1.25，9.62）。相比之下，即使在持续贫困组（调整后的比值比 3.12，95% CI 1.06，9.19）中，这种关系甚至在怀孕中期也建立了。这项研究的结果表明，大多数孕妇报告睡眠质量下降，但是，少数报告整个怀孕期间睡眠质量稳定 - 较差。睡眠质量差与孕期体重增加过多有关。相比之下，那些睡眠质量稳定-较差的孕妇妊娠期体重增加过多的风险更大。好转贫困组妊娠晚期睡眠质量差可预测妊娠期体重增加过多（调整后的比值比 3.47，95% CI 1.25，9.62）。相比之下，即使在持续贫困组（调整后的比值比 3.12, 95% CI 1.06, 9.19）中，这种关系甚至在怀孕中期也建立了。这项研究的结果表明，大多数孕妇报告睡眠质量下降，但是，少数报告整个怀孕期间睡眠质量稳定 - 较差。睡眠质量差与孕期体重增加过多有关。相比之下，那些睡眠质量稳定-较差的孕妇妊娠期体重增加过多的风险更大。好转贫困组妊娠晚期睡眠质量差可预测妊娠期体重增加过多（调整后的比值比 3.47，95% CI 1.25，9.62）。相比之下，即使在持续贫困组（调整后的比值比 3.12, 95% CI 1.06, 9.19）中，这种关系甚至在怀孕中期也建立了。这项研究的结果表明，大多数孕妇报告睡眠质量下降，但是，少数报告整个怀孕期间睡眠质量稳定 - 较差。睡眠质量差与孕期体重增加过多有关。相比之下，那些睡眠质量稳定-较差的孕妇妊娠期体重增加过多的风险更大。即使在持续贫困组的妊娠中期，这种关系也已建立（调整后的比值比为 3.12，95% CI 为 1.06，9.19）。这项研究的结果表明，大多数孕妇报告睡眠质量下降，但是，少数报告整个怀孕期间睡眠质量稳定 - 较差。睡眠质量差与孕期体重增加过多有关。相比之下，那些睡眠质量稳定-较差的孕妇妊娠期体重增加过多的风险更大。即使在持续贫困组的妊娠中期，这种关系也已建立（调整后的比值比为 3.12，95% CI 为 1.06，9.19）。这项研究的结果表明，大多数孕妇报告睡眠质量下降，但是，少数报告整个怀孕期间睡眠质量稳定 - 较差。睡眠质量差与孕期体重增加过多有关。相比之下，那些睡眠质量稳定-较差的孕妇妊娠期体重增加过多的风险更大。睡眠质量差与孕期体重增加过多有关。相比之下，那些睡眠质量稳定-较差的孕妇妊娠期体重增加过多的风险更大。睡眠质量差与孕期体重增加过多有关。相比之下，那些睡眠质量稳定-较差的孕妇妊娠期体重增加过多的风险更大。