Abstract
BackgroundPerinatal depression is one of the important mental illnesses among women. However, not enough reviews have been done, and a certain consensus has not been obtained about the prevalence of perinatal depression among Japanese women. The purpose of our study is to reveal the reliable estimates about the prevalence of perinatal depression among Japanese women.MethodWe searched two databases, PubMed and ICHUSHI, to identify studies published from January 1994 to December 2017 with data on the prevalence of antenatal or postnatal depression. Data were extracted from published reports.ResultsWe reviewed 1317 abstracts, retrieved 301 articles and included 123 studies. The point prevalence of postpartum depression at 1 month was 14.3% incorporating 108,431 Japanese women. The period prevalence of depression at pregnancy was 14.0% in the second trimester and 16.3% in the third trimester. The period prevalence of postpartum depression was 15.1% within the first month, 11.6% in 1–3 months, 11.5% in 3–6 months and 11.5% in 6–12 months after birth. We also identified that compared with multiparas, primiparas was significantly associated with a higher prevalence of postpartum depression; the adjusted relative risk was 1.76.ConclusionsThe prevalence of postpartum depression at 1 month after childbirth was found to be 14.3% among Japanese women. During pregnancy, the prevalence of depression increases as childbirth approaches, and the prevalence of depression was found to decrease in the postpartum period over time. In addition, we found that the prevalence of postpartum depression in primiparas was higher than that in multiparas. Hence, we suggest that healthcare professionals need to pay more attention to primiparas than multiparas regarding postpartum depression.
Highlights
Perinatal depression is one of the important mental illnesses among women
We identified that compared with multiparas, primiparas was significantly associated with a higher prevalence of postpartum depression; the adjusted relative risk was 1.76
The prevalence of depression increases as childbirth approaches, and the preva‐ lence of depression was found to decrease in the postpartum period over time
Summary
Perinatal depression is one of the important mental illnesses among women. not enough reviews have been done, and a certain consensus has not been obtained about the prevalence of perinatal depres‐ sion among Japanese women. The aging rate is 27.3% [8], which is the highest rate among developed countries, and support from family members, such as maternal parents, is weakening For this reason, mental stress in women during the perinatal period is strong, and the risk of developing depression may be high. Previous reports have suggested that perinatal depression may be affected by differences in economic status, social support, or ethnicity in the country where patients live [2, 5]. For this reason, we thought it would be relevant to conduct research focused on the country and culture of Japan
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