Skip to main content
. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: J Int Neuropsychol Soc. 2016 Jan;22(1):24–37. doi: 10.1017/S1355617715001101

Table 5. Percentage of concussed (All), asymptomatic concussed (Sx-), and non-injured controls with 1 or more (1+) and 2 or more (2+) significant declines according to reliable change index (RCI) criteria.

24 hr Day 8 Day 15 Day 45




Concussed Control Concussed Control Concussed Control Concussed Control








All Sx- (false +) All Sx- (false +) All Sx- (false +) All Sx- (false +)
ANAM
 1+ decline 47.6 42.9 25.0 31.0 28.6 30.3 35.4 30.8 27.9 25.7 26.1 25.3
 2+ decline 31.0 0.0 6.3 10.7 7.1 14.7 7.6 6.2 11.5 11.4 11.6 8.0
Axon
 1+ decline 60.3 50.0 22.0 38.9 32.4 26.7 26.5 23.5 22.9 26.3 28.6 20.8
 2+ decline 34.2 0.0 4.4 12.5 8.1 7.0 7.4 7.8 7.2 14.0 14.3 5.6
ImPACT
 1+ decline 67.8 53.8 29.6 48.8 39.3 42.7 47.6 46.2 40.8 39.7 39.0 40.0
 2+ decline 34.5 15.4 4.0 8.3 4.9 6.5 10.7 9.0 10.8 6.4 6.5 4.8

Note. Symptom-free (Sx-) ns at 24 hr were small (7 for ANAM, 8 for Axon, and 13 for ImPACT). Symptomatic ns were small at day 45 (2 for ANAM; 1 for Axon/ImPACT). The number of neurocognitive RCIs available for each CNT was 7 for ANAM, 5 for Axon, and 4 for ImPACT. ImPACT uses 80% confidence intervals around RCIs, whereas ANAM and Axon use 90% CIs.

HHS Vulnerability Disclosure