A systematic review of patient–reported outcome measures used in maternal postpartum anxiety

Abstract

To perform a systematic review and evaluate the psychometric measurement properties of instruments in postpartum anxiety using Consensus-Based Standards for the Selection of Health Measurement Instruments (COSMIN) guidelines and identify the best available patient-reported outcome measure. We searched 4 databases (CINAHL, Embase, PubMed, and Web of Science in July 2022) including studies which evaluated at least one psychometric measurement property of a patient reported outcome measurement instrument. The protocol was registered with PROSPERO CRD42021260004 and followed the COSMIN guidelines for systematic reviews. Studies eligible for inclusion included those that assessed a patient-reported outcome measure examining postpartumanxiety. We included studies where the instruments had undergone some form of psychometric property assessment in the postpartum maternal population, consisted of at least 2 questions, and were not subscales. This systematic review used COSMIN and Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines to identify the best patient reported outcome measurement instrument for postpartum anxiety. A risk of bias assessment was performed, and a modified GRADE approach used to assess the level of evidence with recommendations being made for the overall quality of each instrument. A total of 28 studies evaluating 13 instruments in 10,570 patients were included. Content validity was sufficient in 9, with 5 instruments receiving a class A recommendation (recommended for use). Postpartum Specific Anxiety Scale, Postpartum Specific Anxiety Scale Research Short Form, Postpartum Specific Anxiety Scale Research Short Form Covid, Postpartum Specific Anxiety Scale- Persian and State-Trait Anxiety Inventory demonstrated adequate content validity and sufficient internal consistency. Nine instruments received a recommendation of class B (further research required). No instrument received a class C recommendation (not recommended for use). Five instruments received a class A recommendation, all with limitations such as not being specific to the postpartum population, not assessing all domains, lacking generalizability or evaluation of cross-cultural validity. There is currently no freely available instrument assessing all domains of postpartum anxiety. Future studies are needed to determine the optimum current instrument or development and validation of a more specific measure for maternal postpartum anxiety.