Test-Retest Reliability of Traumatic Brain Injury Outcome Measures: A Traumatic Brain Injury Model Systems Study

J Head Trauma Rehabil. Sep/Oct 2017;32(5):E1-E16. doi: 10.1097/HTR.0000000000000291.

Abstract

Objective: Evaluate the test-retest reliability of measures that comprise the Traumatic Brain Injury Model Systems follow-up data set.

Participants: A total of 224 persons with a moderate-severe traumatic brain injury (TBI) enrolled in the Traumatic Brain Injury Model Systems National Database.

Design: Following standard administration of the follow-up interview, a second interview was administered 14 to 28 days later using the same interviewer and the same mode of administration.

Main measures: Traumatic Brain Injury Model Systems follow-up interview that includes 66 variables comprised (a) single item measures of demographics; employment; general health as well as specific health conditions; rehospitalization; tobacco, alcohol, and other drug use; transportation; and mental health and (b) multi-item instruments: FIM; Participation Assessment With Recombined Tools-Objective; Disability Rating Scale; Glasgow Outcome Scale-Extended; Supervision Rating Scale; Satisfaction With Life Scale; TBI Quality of Life Anxiety and Depression items; and The Ohio State University TBI Identification Method.

Results: Intraclass correlation coefficient values ranged from 0.65 to 0.99, weighted kappa values ranged from 0.54 to 0.99, and kappa values ranged from 0.43 to 1.00. Four kappa/weighted kappa estimates fell below 0.60: arrested, psychiatric hospitalization, number of days not in good physical health, and rating of general emotional health.

Conclusions: With few exceptions, good to excellent test-retest reliability estimates were obtained. The findings support the use of these measures in prior and future studies and indicate that persons with moderate-severe TBI can provide reliable self-report.

MeSH terms

  • Adult
  • Biobehavioral Sciences / methods
  • Brain Injuries, Traumatic / diagnosis*
  • Brain Injuries, Traumatic / psychology
  • Brain Injuries, Traumatic / therapy*
  • Databases, Factual
  • Female
  • Glasgow Coma Scale
  • Humans
  • Injury Severity Score
  • Interviews as Topic
  • Male
  • Middle Aged
  • Outcome Assessment, Health Care*
  • Quality of Life
  • Reproducibility of Results
  • Risk Assessment
  • Treatment Outcome