EPDS vs PHQ-9 Depression Screening

How do the options compare?

The lens is a clinician's: guideline endorsement, pregnancy evidence, dosing, onset, and tolerability. Cost and formulation notes appear where relevant.

• A meta-analysis pooling multiple criterion validity studies found PHQ-9 at its standard cutoff of 10 or higher had a pooled sensitivity of 0.84 and specificity of 0.81 for perinatal depression, and separately found the median sensitivity, specificity, and area under the curve of PHQ-9 and EPDS were remarkably similar across 5 head-to-head studies, at roughly 0.81 versus 0.82 sensitivity and 0.75 versus 0.73 specificity. 1
• In one study directly comparing three postpartum screening instruments by phone at 6 to 8 weeks, EPDS at a cutoff of 10 or higher identified 62% of depression cases with 88% specificity, while PHQ-9 at the same cutoff identified only 31% of cases, and EPDS's overall accuracy, an area under the curve of 0.75 versus 0.59 for PHQ-9, was reported as significantly higher in that particular sample. 2
• A confirmatory factor analysis testing both instruments across the antepartum and postpartum periods found PHQ-9 showed adequate performance only in the antenatal group, with inconsistent factor loadings and a poor model fit in the postpartum group, leading the authors to conclude EPDS should be preferred over PHQ-9 for measuring depressive symptoms across the perinatal population, while cautioning that even EPDS scores are not directly comparable between the antepartum and postpartum periods. 3
• EPDS was developed in 1987 specifically to help primary care clinicians detect postpartum depression, and it has since become one of the most widely used screening questionnaires for depression symptoms across pregnancy and the period after birth. 4

Which option makes sense?

The comparison above is intentionally evidence-first, not brand-first. Please consult your healthcare provider to translate it into a plan that fits your pregnancy specifics.

Disclosure: Pregnancy Smart is a supplement maker. The options compared above sit outside our own product line; this page describes their pregnancy evidence on its own merits.