Identifying women at risk for sustained postpartum anxiety.

INTRODUCTION: To describe the prevalence of sustained postpartum anxiety and to develop a multifactorial predictive model to assist in targeted screening procedures.

METHODS: In a population-based cohort in a health region near Vancouver, Canada, 522 mothers completed a mailed questionnaire at 1, 4, and 8 weeks postpartum measuring socio-demographic, biological, pregnancy-related, life stressor, social support, obstetric, and maternal adjustment factors. We undertook a sequential logistic regression analysis to develop a multifactorial predictive model of sustained postpartum anxiety, as measured by a State Trait Anxiety Inventory (STAI) score >40 at 1 week and/or 4 weeks, and 8 weeks postpartum.

RESULTS: The prevalence of sustained postpartum anxiety was 12.6% (95% CI 9.6-16.2). In the multivariable model, predictors of sustained anxiety in the postpartum period were perceived stress at 1 week (1 SD increase; aOR 3.74, 95% CI 2.17-6.44) and partner social support at 1 week (1 SD increase; aOR 0.59, 95% CI 0.40-0.85). Depression symptomatology at 1 week, child care stress, and maternal self-esteem were non-significant.

LIMITATIONS: Single women and women from ethnic minority backgrounds were underrepresented in the sample.

CONCLUSIONS: A large proportion of women experience sustained postpartum anxiety. High perceived stress and low partner social support can be used to facilitate early identification of women likely to experience persistent anxiety in the postpartum period and suggest the need for urgent access to psychotherapeutic services for these women. These factors may also be potential targets for individual or couples therapy to treat postpartum anxiety.