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Measurement Properties of Patient-Reported Outcome Measures for Pruritus: An Updated Systematic Review

Published:August 02, 2021DOI:https://doi.org/10.1016/j.jid.2021.06.032
      This systematic review aims to provide an update on measurement properties of patient-reported outcome measures for pruritus. A Medline literature search was conducted to update the systematic review published in this journal in 2017 and to identify new validation studies published between October 2015 and July 2019. The methodological quality of validation studies was assessed on the basis of the COnsensus-based Standards for the selection of health status Measurement INstruments (COSMIN) checklist, and the measurement properties of patient-reported outcome measures were evaluated. A total of 19 new studies were included and added to the 22 studies identified in the previously published review. Evidence from all the 41 studies evaluating 38 different measures was summarized. Outcome measures were mapped to one of three constructs where possible: pruritus intensity, pruritus severity, pruritus-specific health-related QOL. COSMIN rating revealed mixed results, with deficiencies in the methodological quality of many studies across all constructs. The most appropriate pruritus severity measure was the Itch Severity Scale. ItchyQoL and the disease-specific Uremic Pruritus in Dialysis Scale achieved the most promising results considering the construct pruritus-specific health-related QOL. For pruritus intensity, nine measures performed similarly well.

      Abbreviations:

      COSMIN (COnsensus-based Standards for the selection of health status Measurement INstruments), EL (evidence level), HRQOL (health-related QOL), ISS (Itch Severity Scale), MP (measurement property), NRS (Numerical Rating Scale), VAS (visual analog scale)
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      • Patient-Reported Outcome Measures in Pruritus: A Systematic Review of Measurement Properties
        Journal of Investigative DermatologyVol. 137Issue 10
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          This review aims to systematically evaluate studies on the measurement properties of patient-reported outcome measures in pruritus, especially for use in clinical trials. Validation studies on instruments were identified based on a PubMed literature search. The consensus-based standards for the selection of health status measurement instruments checklist was used to evaluate the studies’ methodological quality, and the consensus-based standards for the selection of health status measurement instruments criteria were used to synthesize the instruments’ measurement properties.
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