

In addition, it has been identified as the most frequently validated instrument to screen for perinatal depression, and in 2014 the EPDS had been validated against a diagnosis of depression in at least 37 languages. The Edinburgh Postnatal depression Scale (EPDS) has been established as a useful screening instrument for detection of women at risk for depression in the perinatal period. Parallel analysis was used to assess the number of factors. Exploratory factor analysis was done using oblique rotation.

CIs were computed by embedding the calculations in a weighted logistic regression.

Sensitivity, specificity, positive predictive value, negative predictive value and area under the ROC curve were computed from the reweighted data for all relevant cutoff values. the probability of being sampled) and the weights were applied when assessing the receiver operation characteristics (ROCs) of the EPDS. The calculation of weights was based upon the mother’s sampling category at T1 (i.e. Using the distribution of 4931 T1 EPDS-scores from the same population from which we sampled the participants, we used sampling weighing to reweight the sample. A two-phase stratified sampling strategy with three sampling categories (EPDS-score at T1) was used. Diagnostic interviews were audio recorded to enable subsequent coding for ICD-10 diagnoses and inter-rater reliability analysis. At a subsequent home visit (T2), the EPDS and the Structured Clinical Interview for DSM-5 were administered. Women ( N = 324) were recruited after routine screenings with the EPDS between 2 and 10 months postpartum (T1).
