Development of Social Life Impact for Mother (SLIM) Scale At First Trimester to Identify Mothers Who Need Social Support During Postpartum: A Hospital-Based Prospective Study in Japan

Background: Postpartum social problems, such as postpartum depression and bonding disorders, are important risk factors for child maltreatment. Mothers with such problems are known to need social support. The aim of this study was to develop and validate the Social Life Impact for Mother (SLIM) scale to identify mothers in Japan who need social support during postpartum.Methods: Hospital-based prospective study was implemented covering nation-wide area of Japan. A total of 7462 pregnant women completed the SLIM scale at first trimester, and postpartum social problems (postpartum depression and bonding disorders) were assessed at one month after delivery (N=5768, follow-up rate: 77.3%). Multivariate logistic regression was applied to investigate the association between SLIM scale and postpartum social problems.Results: The SLIM scale predicted postpartum social problems in moderate accuracy (AUC=0.63, 95% confidence interval: 0.60-0.65). Further stratification by local clinic and tertiary hospital did not affect the estimates.Conclusion: The SLIM scale at prenatal checkup may be useful for obstetricians to detect mothers with postpartum social problems. Further intervention study using SLIM score is warranted.