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. Author manuscript; available in PMC: 2019 Apr 1.
Published in final edited form as: Clin Neuropsychol. 2017 Oct 9;32(3):524–529. doi: 10.1080/13854046.2017.1378371

Table 2.

Reliability of self-reported history of traumatic brain injury.

Cognitively intact n = 2024 MCI n = 760 AD n = 1525
Self-reported history of TBI with LOC <5 min
  Consistent time 1 and 2, n (%) 1986 (98.1) 743 (97.8) 1493 (97.9)
  Reported TBI time 1, n (%) 109 (5.4) 55 (7.2) 99 (6.5)
  Reported TBI time 2, n (%) 116 (5.6) 54 (7.1) 91 (6.0)
  Kappa .819 .832 .820
  p <.001 <.001 <.001
Self-reported history of TBI with LOC ≥5 min
  Consistent time 1 and 2, n (%) 2011 (99.4) 752 (98.9) 1, 519 (99.6)
  Reported TBI time 1, n (%) 43 (2.1) 31 (4.1) 32 (2.1)
  Reported TBI time 2, n (%) 42 (2.1) 29 (3.8) 32 (2.1)
  Kappa .844 .861 .904
  p <.001 <.001 <.001

Notes: MCI = Mild Cognitive Impairment; AD = Alzheimer’s disease; TBI = Traumatic Brain Injury; LOC = Loss of Consciousness.