Letter by Lapin et al Regarding Article, “PROMIS GH (Patient-Reported Outcomes Measurement Information System Global Health) Scale in Stroke: A Validation Study”
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To the Editor:
We recently conducted a validation study of the PROMIS GH (Patient-Reported Outcomes Measurement Information System Global Health) in patients with ischemic and hemorrhagic stroke.1 The PROMIS GH consists of 10 global health items and are summarized in mental global health (MGH) and physical global health (PGH) component scores. Both the individual global items and component scores can be used to assess patients’ perceptions of their health. Since our study was published in Stroke, a new version of the PROMIS GH, version 1.2, was constructed to enable automatic item response theory scoring of MGH and PGH component scores, available through the HealthMeasures Scoring Service (www.assessmentcenter.net/ac_scoringservice). Changes became available September 22, 2017. These item-level calibrations, or response pattern scoring, are more accurate than the use of raw score to T score cross-walk tables, which we used in the …