Six patient-reported outcome measurement information system short form measures have negligible age- or diagnosis-related differential item functioning in individuals with disabilities

Karon F. Cook*, Alyssa M. Bamer, Dagmar Amtmann, Ivan R. Molton, Mark P. Jensen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

Objective: To evaluate the measurement invariance of 6 self-report measures selected for an ongoing longitudinal study of individuals with spinal cord injury, muscular dystrophy, postpolio syndrome, and multiple sclerosis. Design: Participants completed and returned by mail surveys that included the targeted self-report measures. Ordinal logistic regressions methods were applied to evaluate items for differential item functioning (DIF) by diagnosis and age range. Setting: Community. Participants: Participants (N=2479) who had 1 of the 4 target diagnoses. Interventions: None. Main Outcome Measures: Six short-form measures from the Patient-Reported Outcome Measurement Information System (PROMIS) were administered to participants to measure fatigue, pain interference, satisfaction with social roles, sleep disturbance, sleep-related impairment, and depression. Results: One item of 1 measure (fatigue) exhibited DIF by diagnosis based on a published standard for meaningful DIF. However, scores corrected for this DIF were highly correlated with uncorrected scores (r>.999). No DIF by age range was found for any of the measures. Conclusions: Study findings support the use of the selected PROMIS short forms for comparing symptoms and quality of life indicators across different diagnoses and age ranges.

Original languageEnglish (US)
Pages (from-to)1289-1291
Number of pages3
JournalArchives of physical medicine and rehabilitation
Volume93
Issue number7
DOIs
StatePublished - Jul 2012

Keywords

  • Aging
  • Disabled persons
  • Outcome assessment (health care)
  • Psychometrics
  • Rehabilitation

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation

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