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Measurement Characteristics and Clinical Utility of the Awareness Questionnaire in Individuals With Traumatic Brain Injury

Published:February 04, 2018DOI:https://doi.org/10.1016/j.apmr.2017.12.002
      Traumatic brain injury (TBI) is an injury that disrupts normative function of the brain by means of a bump, blow, or jolt to the head and ranges in severity from mild (concussion) to severe.1 Approximately 30% of all injury deaths are caused by TBI.1 Patients with TBI often demonstrate impaired awareness to their limitations, which leads to low motivation for treatment.2 The Awareness Questionnaire (AQ) is an assessment developed to measure the awareness of patients with TBI in terms of cognitive, behavioral/affective, and motor/sensory characteristics. The AQ focuses on differences in functioning pre- and postinjury. The AQ is administered to the patient and a family member or clinician. The patient and family member versions have 17 items, whereas the clinician version contains 18 items.3 Each question is scored on a 5-point Likert-type scale with answers ranging from much worse to much better after injury.4 Differences between patient-clinician scores and patient-family scores are calculated to assess awareness; higher difference scores indicate lower awareness of limitations. The AQ has adequate construct and criterion validity,3. 5. 6. 7. 8. adequate to excellent test-retest reliability,4 and excellent internal consistency.2. 4. Administration of the AQ is free and simple, requiring <10 minutes, and only involves the questions themselves. The Traumatic Brain Injury Taskforce states that the tool is appropriate for use in intervention research studies. The assessment can be found on the TBI Model Systems website created by the Center for Outcome Measurement in Brain Injury.3
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        Centers for Disease Control and Prevention. Traumatic brain injury & concussion. 2017. Available at: https://www.cdc.gov/traumaticbraininjury/get_the_facts.html. Accessed December 7, 2017.
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        Sherer M, Bergloff P, Boake C, High W Jr, Levin E. The Awareness Questionnaire: factor structure and internal consistency. Brain Inj 1998;12:63-8.
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        Sherer M. The Awareness Questionnaire. The Center for Outcome Measurement in Brain Injury. 2004. Available at: http://www.tbims.org/combi/aq. Accessed December 7, 2017.
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        Hellebrekers D, Winkens I, Kruiper S, Van Heugten C. Psychometric properties of the awareness questionnaire, patient competency rating scale and dysexecutive questionnaire in patients with acquired brain injury. Brain Inj 2017;31:1469-78.
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        Sherer M, Hart T, Nick TG. Measurement of impaired self-awareness after traumatic brain injury: a comparison of the patient competency rating scale and the awareness questionnaire. Brain Inj 2003;17:25-37.
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        Bivona U, Ciurli P, Barba C, et al. Executive function and metacognitive self-awareness after severe traumatic brain injury. J Int Neuropsychol Soc 2008;14:862-8.
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        Sherer M, Bergloff P, Levin E, High WM Jr, Oden KE, Nick TG. Impaired awareness and employment outcome after traumatic brain injury. J Head Trauma Rehabil 1998;13:52-61.
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        Evans CC, Sherer M, Nick TG, Nakase-Richardson R, Yablon SA. Early impaired self-awareness, depression, and subjective well-being following traumatic brain injury. J Head Trauma Rehabil 2005;20:488-500.
      This abbreviated summary provides a review of the psychometric properties of the AQ in people with traumatic brain injury. A full review of the AQ and reviews of >400 other instruments for patients with various health conditions can be found at www.sralab.org/rehabilitation-measures.
      Please address correspondence to [email protected] .
      This instrument summary is designed to facilitate the selection of outcome measures by clinicians. The information contained in this summary represents a sample of the peer-reviewed research available at the time of this summary's publication. The information contained in this summary does not constitute an endorsement of this instrument for clinical practice. The views expressed are those of the summary authors and do not represent those of the authors' employers, the instrument owner(s), the Archives of Physical Medicine and Rehabilitation, the Rehabilitation Measures Database, or the U.S. Department of Health and Human Services. The information contained in this summary has not been reviewed externally.
      The Rehabilitation Measures Database and Instrument Summary Tear-sheets were initially funded by the National Institute on Disability, Independent Living, and Rehabilitation Research, U.S. Department of Health and Human Services, through the Rehabilitation Research and Training Center on Improving Measurement of Medical Rehabilitation Outcomes (grant no. H133B090024).