Introduction: This study investigated the relationship between personal and family resources (i.e., social support, family functioning, self-efficacy in care, sense of coherence and perceived burden of care) and depressive and anxiety symptoms in women during the puerperium, adjusting for stressors. Methods: This is a quantitative research design, carried out through a descriptive, cross-sectional correlation study. This study includes 212 women over the age of 19 who gave birth from March to September 2019 in Maternal and Child Hospital of Jaén (Spain). Women were selected during the immediate postpartum period. The variables analysed were postpartum depressive symptoms (Edinburgh scale), anxiety symptoms (STAI state anxiety questionnaire), perceived social support (Duke-UNC-11), family functioning (family APGAR), self-efficacy in care (Lawton), sense of coherence (SOC-13), perceived burden (Caregiver Strain Index) and stressful life events (Holmes and Rahe). The main analysis consisted of a multiple linear regression. Results: The regression model of depressive symptoms found a positive association with perceived burden (β = 0.230, p = 0.015) and negative associations with self-efficacy in care (β = −0.348, p < 0.001), social support (β = −0.161, p < 0.001) and sense of coherence (β = −0.081, p = 0.001). The regression model of anxiety symptoms obtained a positive association with perceived burden (β = 1.052, p < 0.001) and negative associations with self-efficacy in care (β = −0.329, p = 0.041), social support (β = −0.234, p = 0.001) and sense of coherence (β = −0.262, p < 0.001). Discussion: Firstly, depressive and anxiety symptoms in the puerperium period may be more prevalent than in other periods of a woman's life. Secondly, perceived social support, self-efficacy in caring for the newborn and sense of coherence may be protective factors for depressive and anxiety symptoms in the puerperium period. Finally, perceived burden in caring for the newborn may be a risk factor for these symptoms.

Background: The objective of this study is to determine the validity and reliability of the Caregiver Strain Index (CSI) for women during the postpartum period. Methods: This is a validation study of a measurement instrument. This study includes 212 women over the age of 19 who gave birth from March to September 2019 in Maternal and Child Hospital of Jaén (Spain). The items of the CSI were adapted for newborn care. Content validity was measured by five experts, calculating the index of agreement (Aiken’s V). Criterion validity was assessed by correlations with scores of other tools that measure constructs related to burden (Edinburgh Postpartum Depression Scale, State-Trait Anxiety Questionnaire, SOC-13 and Duke-UNC-11). Construct validity was determined by the known-groups method. Internal consistency was measured using Cronbach’s Alpha, and stability was analysed using the intraclass correlation coefficient (ICC). Results: Regarding content validity, an Aiken’s V of 1.00 (p = 0.032) was obtained. Regarding criterion validity, the correlation analyses showed statistically significant coefficients between the scores of the questionnaire and those of the sense of coherence (r = −0.447, p < 0.001), depressive symptoms (r = 0.429, p < 0.001), social support (rho = −0.379, p < 0.001) and anxiety symptoms (r = 0.532, p < 0.001). The known-groups method showed statistically significant differences in the mean of subjective burden between the groups (depressive symptoms, anxiety symptoms, sense of coherence and social support). The total scale obtained a Cronbach’s alpha value of 0.710. The ICC was 0.979. Conclusions: The adapted CSI is a valid and reliable screening tool for the subjective burden in women during the puerperium. The adapted CSI can play an important role as a guide to detect the subjective burden in women during the puerperium.