Assessing postpartum depression: Evidences for the need of multiple methods

Abstract

IntroductionDifferent methods and instruments are frequently used to measure postpartum depression (PPD) in research, e.g. PPD-specific scales, DSM-based diagnostic interviews and rating scales assessing general depression. However, it is unsure whether these measures would lead to the same results, e.g. in the identification of “depressed” women or in their relations to third variables. Objective(s)We compared different measures of PPD and their relations with a third variable, namely the mothers’ marital satisfaction. MethodWe recruited 65 mothers to take part in a study about the impact of PPD on the development of early family relations. Maternal PPD was assessed with multiple methods (i) a PPD-specific scale, (ii) a DSM-based diagnostic interviews and (iii) a rating scale designed to assess the severity of depressive symptoms. We assessed mothers’ marital satisfaction with the Marital Adjustment Test (MAT). ResultsResults showed weak overlap between PPD-specific scale and DSM-based diagnosis of PPD, and modest correlations between the PPD-specific scale and the general depression rating scale. Only the score on the PPD-specific scale could predict marital satisfaction. ConclusionAs we found discrepancies between different measures of PPD, we suggest being cautious in the choice of measures and using multiple methods to measure PPD in a comprehensive way.