perinatal stress, anxiety, depression

Perinatal stress, anxiety, and depression impact not only women but also their child(ren). The purpose of this longitudinal study is to explore trends of stress, anxiety, and depressive symptoms from pregnancy to postpartum and understand predictions of stress and anxiety on post-partum depression. One-hundred-fifty-six women at 23-28 weeks gestation (T1), 147 at 32-36 weeks gestation (T2), 129 at over 36 weeks gestation (T3), and 83 at postpartum (T4) completed study surveys. The Perceived Stress Scale, Center for Epidemiologic Studies Depression scale, and State-Trait Anxiety Inventory were used to measure stress, depressive symptoms, and anxiety. STAI-S at T1 and T2, STAI-T at T1 and T4, and CESD at T2 and T4 had one missing value. The expectation-maximization (EM) algorithm was used to manage missing values.围产期（Perinatal）压力、焦虑与抑郁不仅会对产妇产生不良影响，同时也会累及其子女。本项纵向研究旨在探明孕产妇从孕期至产后阶段的压力、焦虑及抑郁症状的变化趋势，并解析压力与焦虑对产后抑郁的预测作用。本次研究共招募受试者：156名孕23~28周的女性参与了T1阶段调研，147名孕32~36周的女性参与了T2阶段调研，129名孕36周以上的女性参与了T3阶段调研，另有83名产后女性参与了T4阶段调研，所有受试者均完成了研究问卷。本研究采用知觉压力量表（Perceived Stress Scale）、流调中心抑郁量表（Center for Epidemiologic Studies Depression scale, CESD）以及状态-特质焦虑问卷（State-Trait Anxiety Inventory, STAI）分别对压力水平、抑郁症状与焦虑状态进行评估。其中，T1与T2阶段的状态焦虑分量表（STAI-S）、T1与T4阶段的特质焦虑分量表（STAI-T），以及T2与T4阶段的流调中心抑郁量表（CESD）各存在1个缺失值。本研究采用期望最大化（Expectation-Maximization, EM）算法对上述缺失值进行处理。