Depression prevalence based on the Edinburgh Postnatal Depression Scale compared to Structured Clinical Interview for...

Area of Science:

• Reproductive Psychiatry
• Clinical Psychology
• Epidemiology

Background:

• The Edinburgh Postnatal Depression Scale (EPDS) is widely used to estimate depression prevalence in pregnant and postpartum individuals.
• No established EPDS cutoff consistently and accurately estimates depression prevalence across individual studies.

Purpose of the Study:

• To determine if any EPDS cutoff can accurately and consistently estimate depression prevalence in individual studies.
• To compare EPDS-based prevalence estimates with those derived from the Structured Clinical Interview for DSM (SCID).

Main Methods:

• Analysis of datasets comparing EPDS scores with SCID major depression status.
• Random-effects meta-analysis to compare prevalence estimates from EPDS cutoffs against SCID diagnoses.

Main Results:

• Data from 29 studies (7,315 participants) were analyzed.
• EPDS cutoffs (≥9 to ≥14) yielded pooled prevalence estimates from 27.8% to 9.0%.
• EPDS ≥14 approximated overall SCID major depression prevalence (9.0%) but showed a mean absolute difference of 5.1% in individual studies.

Conclusions:

• While EPDS ≥14 approximates overall depression prevalence, significant heterogeneity exists across studies.
• This heterogeneity presents a barrier to using the EPDS for accurate individual study prevalence estimation.