Improving discrimination in antepartum depression screening using the Edinburgh Postnatal Depression Scale

Area of Science:

• Obstetrics and Gynecology
• Psychiatry
• Mental Health Screening

Background:

• Universal screening for postpartum depression (PPD) is a recent recommendation.
• Optimal risk stratification using depression screening tools requires further definition.
• This study explores enhanced methods for PPD risk stratification using the Edinburgh Postnatal Depression Scale (EPDS).

Purpose of the Study:

• To improve the risk stratification ability of the EPDS for postpartum depression.
• To evaluate alternate cut-off points for the EPDS.
• To assess the utility of incorporating other risk factors with the EPDS for PPD prediction.

Main Methods:

• An observational cohort study of 4939 women screened antepartum and postpartum.
• The Edinburgh Postnatal Depression Scale (EPDS) was used for screening.
• Analysis included calculating Area Under the Curve (AUC), sensitivity, specificity, and predictive values for PPD (EPDS ≥10).

Main Results:

• An antepartum EPDS cut-off <5 demonstrated a high negative predictive value (97.6%) for low PPD risk.
• Overall discrimination of antepartum EPDS alone was modest (AUC 0.66).
• Combining antepartum EPDS with a history of major depressive disorder improved discrimination (AUC 0.70-0.73).

Conclusions:

• An antepartum EPDS cut-off <5 is effective in identifying women at low risk for postpartum depression.
• The negative predictive value, while high, is insufficient to replace postpartum screening.
• Combining EPDS with prior depressive disorder history enhances PPD risk prediction.