Postpartum Depression, Social Support and Quality of Life Between Adolescent and Adult Mothers in Six Months Postpartum in the COVID-19 Pandemic: Longitudinal Comparative Study

Aims: To determine the proportion of postpartum depression (PPD), explore associated risk factors with PPD, and examine changes in PPD, social support and quality of life (QOL) among adolescent and adult mothers in the first 6 months postpartum during the COVID-19 pandemic. Design: A longitudinal comparative study was conducted using an online questionnaire from January to August 2021. Methods: The study recruited 65 adolescent and 65 adult mothers who attended postpartum checkups at 6 weeks postpartum in primary hospitals across Ayutthaya, Chachoengsao and Phetchaburi provinces in Thailand. Data were collected by the Edinburgh Postnatal Depression Scale, Postpartum Support Questionnaire, and the World Health Organisation Quality of Life Brief at 6 weeks, 4 months and 6 months postpartum. Results: Finally, 60 adolescent and 60 adult mothers were included for analysis. Adolescent mothers experienced lower social support and QOL compared to adult mothers over the 6-month postpartum period. Notably, both adolescent and adult mothers had significantly increased PPD proportions from 6 weeks to 6 months postpartum (31.7%-48.3% and 23.3%-43.3%, respectively). However, there was no significant difference in the PPD proportions between groups. In adjusted models, significant risk factors for PPD during the first 6 months postpartum included educational level, unintended pregnancy, mode of delivery and social support. Conclusion: Significant changes in PPD, social support and QOL were observed in both adolescent and adult mothers during the first 6 months postpartum. Adolescent mothers consistently demonstrated lower levels of social support and QOL at 6 weeks, 4 months and 6 months postpartum compared to adult mothers. Additionally, mothers with lower educational attainment, unintended pregnancies, caesarean deliveries and low social support were more likely to experience PPD.