Measurement of impaired self-awareness after traumatic brain injury: a comparison of the patient competency rating scale and the awareness questionnaire

Brain Inj. 2003 Jan;17(1):25-37. doi: 10.1080/0269905021000010113.


Primary objective: To compare the Patient Competency Rating Scale (PCRS) and the Awareness Questionnaire (AQ) in the measurement of impaired self-awareness (ISA) in persons with traumatic brain injury (TBI).

Research design: Prospective cohort of patients seen for inpatient rehabilitation following TBI.

Procedures: Measures of self-awareness were collected at resolution of post-traumatic amnesia and outcomes (rated employability) were collected at discharge from inpatient rehabilitation.

Outcomes and results: Subjects were 129 persons with TBI. Measures from the PCRS and AQ showed moderate correlations. Models using as predictors patient/clinician discrepancies for the PCRS and the AQ performed comparably in predicting employability (Nagelkerke R(2) = 0.22 and 0.20, respectively).

Conclusions: The PCRS and AQ showed only moderate correlations, but performed comparably as measures of ISA after TBI. Patient/clinician discrepancies appeared to be more valid measures of ISA early after TBI than patient/family discrepancies. Preliminary cutting points for severity of ISA were presented for the two scales.

Publication types

  • Multicenter Study
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Adult
  • Awareness*
  • Brain Injuries / psychology*
  • Cohort Studies
  • Female
  • Humans
  • Male
  • Patient Participation
  • Prospective Studies
  • Psychiatric Status Rating Scales
  • Regression Analysis
  • Self Concept*
  • Self-Assessment
  • Sensitivity and Specificity
  • Surveys and Questionnaires / standards*