The Spanish version of the Mothers' Postnatal Sense of Security Scale: Psychometric properties and predictive utility

Postnatal sense of security is a relevant construct related to several variables of motherhood. However, it has not yet been studied in the Spanish context. The aims were: (a) To analyze the psychometric properties of a Spanish version of the Mothers' Postnatal Sense of Security Scale (PPSS-S); (b) analyze the factors related to mothers' sense of security during the first 2 weeks following childbirth (sociodemographic variables and factors related to maternity); and (c) examine the predictive utility that mothers' sense of security has on symptoms of postpartum depression 6-11 months after childbirth. This was a prospective longitudinal study performed in the first 6-11 months post-partum in four regions of Spain. A total of 928 mothers whose mean age was 33.67 years (standard deviation = 4.54) participated. The confirmatory factor analysis showed adequate adjustment to the original structure (χ²  = 17,272.79, df = 153, p < .001; Tucker-Lewis index = 0.98; comparative fit index = 0.98; root mean square error of approximation = 0.058 [0.053-0.063])and the overall internal consistency was 0.89. Direct relationships were shown between women' sense of security and already having had a child, the absence of postpartum health complications (either in the mother or the newborn) and receiving consistent information from healthcare professionals. Our results showed adequate evidence for the reliability and validity of the Spanish version of the PPSS-S. Understanding mothers' sense of security during the early months of motherhood, as well as related factors in the postpartum period, will allow health professionals to implement preventive measures to promote mental health and could help reduce symptoms of postpartum depression.