Caroleen Quach|Michelle M. Langer|Ronald C. Chen|David Thissen|Deborah Usinger|Marc A. Emerson|Bryce B. Reeve
Reliability and validity of PROMIS measures administered by telephone interview in a longitudinal localized prostate cancer study
University of North Carolina at Chapel Hill|University of North Carolina at Chapel Hill|University of North Carolina at Chapel Hill|University of North Carolina at Chapel Hill|University of North Carolina at Chapel Hill|University of North Carolina at Chapel Hill|University of North Carolina at Chapel Hill
evaluate reliability validity six promis measures anxiety depression fatigue pain interference physical function sleep disturbance telephoneadministered diverse populationbased cohort localized prostate cancer patients newly diagnosed men enrolled north carolina prostate cancer comparative effectiveness survivorship study promis measures telephoneadministered pretreatment baseline 3months 12months posttreatment initiation n 778 reliability evaluated using cronbachs alpha dimensionality examined bifactor models explained common variance ecv ordinal logistic regression models used detect potential differential item functioning dif key demographic groups convergent discriminant validity assessed correlations legacy instruments memorial anxiety scale prostate cancer sf12v2 knowngroups validity examined age raceethnicity comorbidity treatment promis measure high cronbachs alpha values 086096 sufficiently unidimensional floor effects observed anxiety depression pain interference measures ceiling effects observed physical function dif detected convergent validity established moderate strong correlations promis legacy measures 041077 similar constructs discriminant validity demonstrated weak correlations measures dissimilar domains 020031 promis measures detected differences across age raceethnicity comorbidity groups differences found treatment study provides support reliability construct validity six promis measures prostate cancer well utility telephone administration assessing hrqol low literacy hardtoreach populations