title: Items, Instruments, Crosswalks, and PROMIS.
authors.forename: James F
authors.initials: JF
authors.lastname: Fries
authors.forename: Eswar
authors.initials: E
authors.lastname: Krishnan
authors.forename: Bonnie
authors.initials: B
authors.lastname: Bruce
mesh_terms: D001172:Arthritis, Rheumatoid / Q000175:diagnosis / Q000503:physiopathology; D004185:Disability Evaluation; D006305:Health Status Indicators; D006801:Humans; D007256:Information Systems; D011594:Psychometrics / Q000379:methods; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires / Q000592:standards*; D016896:Treatment Outcome