AimsTo identify the course of maternal fatigue during the first 6 months postpartum and to determine factors associated with it.DesignA prospective cohort study.MethodsWomen (N = 2,697) in 13 Japanese hospitals provided longitudinal data using self‐report questionnaires at five time points. Maternal fatigue was assessed using the Postnatal Accumulated Fatigue Scale. We focused on the effect of maternal age and parity on the course of maternal fatigue and used a mixed between/within‐subjects analysis of variance. Factors associated with maternal fatigue were analysed using stepwise multiple regression.ResultsIn the 6‐month postpartum period, the level of fatigue was highest at 1 month and significantly decreased from 1–4 months postpartum. Primiparas showed a significantly higher level of fatigue than multiparas during hospital stay and their levels of fatigue more closely approximated the 1‐month peak. Multiparas showed significantly higher levels of fatigue than younger primiparas at 6‐month postpartum. Factors associated with maternal fatigue included satisfaction with sleep, concerns about child‐rearing, satisfaction with social support, financial burden and meal times per day.

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The purpose of this mixed-method design study was to examine factors contributing to depression among immigrant Chinese women (primipara and multipara) (n = 22) delivering a child for the first time in Japan. Data were obtained just after hospital discharge by using the Edinburgh Postnatal Depression Scale (EPDS), the Social Support Scale, a new scale to measure crosscultural stressors in the postpartum setting and a visual analogue scale for stress and a demographic survey. The average EPDS score was 9.0 (SD ± 3.7) at 1-3 weeks postpartum; yet, more than half of the subjects (n = 12; 54.5%) were high risk for depression (EPDS ≥ 10). Low household income and primiparous status were associated with depression scores. New mothers with depression also reported more general stress and more cross-cultural stress in the postpartum setting, although social support appeared to mediate cross-cultural stressors. Semi-structured interviews were held with two immigrant women at high risk for depression; these new mothers described additional stress because they could not follow Zuoyuezi, an important postpartum Chinese tradition, in the Japanese hospital. These findings suggest that immigrant Chinese women are at higher risk for postpartum depression when they give birth for the first time in Japan.

This study aimed to describe the postpartum experiences of older Japanese primiparas during the first month after childbirth. The participants were 21 primiparous women over 35 years of age who gave birth to a healthy child at three urban hospitals. Data were collected from July 2011 to April 2012 through a semi‐structured interview about postpartum experiences after discharge. Data were analysed using content analysis. We obtained Institutional Review Boards' approval and written informed consent from all participants prior to study initiation. Thirteen themes of postpartum experiences were extracted. The findings revealed that the mothers' experiences varied greatly and were highly personal. Also, participants described common experiences, unique child‐care support needs and the strengths of older primiparas. Understanding the postpartum experiences of older primiparas assists health‐care professionals to identify better ways to provide appropriate support.

(Suppl. 1) 5-13Cross-sectional and longitudinal validation of a 13-item fatigue scale among Japanese postpartum mothersThis study examined the psychometric properties of a 13-item fatigue scale for postpartum mothers. Japanese mothers (n = 2026) from a cohort study completed questionnaires (e.g. fatigue scale, Japanese version of the Edinburgh Postnatal Depression Scale, demographics) during their hospital stay after childbirth (baseline) and at 1, 2, 4 and 6 months postpartum. Initial factor analysis of baseline data revealed that the fatigue scale had three factors or subscales (physical, emotional and cognitive). Within-group analysis across each measurement time revealed the same three-factor structure with acceptable fit. Between-group analysis also showed longitudinal factorial invariance across time. The fatigue subscales had acceptable divergent and convergent validities with the depression scale. The subscale scores differed significantly based on participant background. The Japanese Fatigue Scale is a concise and informative tool for assessing aspects of fatigue in clinical settings and in the community.