Development and psychometric properties of the Pandemic-Related Postpartum Stress Scale (PREPS-PP).

Purpose: Postpartum experiences have been adversely affected by the burdens of the COVID-19 pandemic. However, there are no well-tested measures of pandemic-specific postpartum stress. We developed a modified, postpartum version of the Pandemic-Related Pregnancy Stress Scale (PREPS) and examined the psychometric properties of this novel measure.

Methods: Online questionnaires were administered at 3-4 month intervals throughout pregnancy and postpartum to women pregnant at the start of the pandemic. This study reports psychometric properties of the Pandemic-Related Postpartum Stress Scale (PREPS-PP) among women who were administered this instrument at either of two postpartum timepoints.

Results: At both timepoints (n = 1301 and n = 1009), CFAs revealed good model fit of the same three-factor structure identified for the prenatal PREPS (Preparedness Stress, Infection Stress, and Positive Appraisal). All PREPS-PP subscales demonstrated good reliability (α's .78-87). Higher levels of Preparedness Stress and Infection Stress were associated with greater health and financial burdens and psychological distress.

Conclusions: The PREPS-PP is a reliable and valid measure of postpartum stress related to the COVID-19 pandemic. It is a valuable tool for future research into how pandemic-related postpartum stress may affect families in the short- and long-term.