The perinatal mortality of immigrants in Japan is higher than that of Japanese women. However, details of the problems of immigrant perinatal women that contribute to worsening of their health are still unknown. This review describes the physical, psychological, social, and economic problems of immigrant women during the perinatal period in Japan. Medline, CINAHL, PsycINFO, and Igaku-Chuo Zasshi were searched and 36 relevant articles were reviewed. The related descriptions were collected and analyzed by using content analysis. The results showed that immigrant perinatal women in Japan experienced the following problems: language barriers, a problematic relationship with a partner, illegal residency, emotional distress, physical distress, adjustment difficulties, lack of utilization of services, social isolation, lack of support, lack of information, low economic status, unsatisfactory health care, and discrimination. These results indicated that multilingual services, strengthening of social and support networks, and political action are necessary to resolve their problems.

Background. To examine the effects of temperament and character domains on depression during pregnancy. Methods. We examined 601 pregnant women using a questionnaire that included the Edinburgh Postnatal Depression Scale (EPDS), the Temperament and Character Inventory (TCI), and demographic variables. Results. In a hierarchical regression analysis, severity of depression during pregnancy was predicted by the women's negative response towards the current pregnancy, low self-directedness, and high harm avoidance, persistence, and self-transcendence. Conclusion. Depression during pregnancy is predicted by personality traits as well as women's negative attitudes towards the current pregnancy.

Background: The severity of nausea and vomiting of pregnancy (NVP) correlates with pregnancy complications. This study aimed to confirm the measurement and structural invariance of the 24 h Pregnancy-Unique Quantification of Emesis and Nausea (PUQE-24) regarding parity and observation time among pregnant women during the first trimester. Methods: Questionnaires including the PUQE-24 and the Health-Related Quality of Life for Nausea and Vomiting during Pregnancy (NVP-QOL) questionnaire were distributed to pregnant women from 10 to 13 weeks of gestation who were attending antenatal clinics. There were 382 respondents, and of these, 129 responded to the PUQE-24 again one week later. Results: Confirmatory factor analysis of this single factor model showed a good fit with the data: CFI = 1.000. The PUQE-24 factor and NVP-QOL factor were strongly correlated (r = 82). Configural, measurement, and structural invariance of the factor structure of the PUQE items were confirmed between primiparas and multiparas as well as at the test and retest observation occasions. Conclusion: The findings suggested that using the PUQE-24 among pregnant women in the first trimester was robust in its factor structure. The PUQE-24 may be a promising tool as an easy and robust measure of the severity of nausea and vomiting among pregnant women.

Researchers should be cautious about biases in parental assessment of children's Emotionality and Impulsivity, but other temperament traits may be free from such biases.