Accuracy of Self-reported Length of Coma and Posttraumatic Amnesia in Persons With Medically Verified Traumatic Brain Injury

作者：Sherer Mark^*; Sander Angelle M; Maestas Kacey Little; Pastorek Nicholas J; Nick Todd G; Li Jingyun

来源：Archives of Physical Medicine and Rehabilitation, 2015, 96(4): 652-658.

DOI：10.1016/j.apmr.2014.10.024

• Amnesia
• Brain injuries
• traumatic
• Coma
• Rehabilitation
• Self-report
• Severity

Objective: To determine the accuracy of self-reported length of coma and posttraumatic amnesia (PTA) in persons with medically verified traumatic brain injury (TBI) and to investigate factors that affect self-report of length of coma and PTA duration.
Design: Prospective cohort study.
Setting: Specialized rehabilitation center with inpatient and outpatient programs.
Participants: Persons (N=242) with medically verified TBI who were identified from a registry of persons who had previously participated in TBI-related research.
Intervention: Not applicable.
Main Outcome Measures: Self-reported length of coma and self-reported PTA duration.
Results: Review of medical records revealed that the mean medically documented length of coma and PTA duration was 6.9 +/- 12 and 19.2 +/- 22 days, respectively, and the mean self-reported length of coma and PTA duration was 16.7 +/- 22 and 106 +/- 194 days, respectively. The average discrepancy between self-report and medical record for length of coma and PTA duration was 8.2 +/- 21 and 64 +/- 176 days, respectively. Multivariable regression models revealed that time since injury, performance on cognitive tests, and medical record values were associated with self-reported values for both length of coma and PTA duration.
Conclusions: In this investigation, persons with medically verified TBI showed poor accuracy in their self-report of length of coma and PTA duration. Discrepancies were large enough to affect injury severity classification. Caution should be exercised when considering self-report of length of coma and PTA duration.

• 出版日期2015-4