Figure 2.

Effect of number of episodes of loss of consciousness (LOC) on outcomes for veterans with combat-acquired mild traumatic brain injury: (A) olfaction scores, (B) post-traumatic stress disorder (PTSD) severity as measured by the PCL-M score, (C) score on the Montreal Cognitive Assessment (MOCA) Test and (D) the prevalence of abnormalities on neurological examination (unfilled circles) or PTSD (filled squares). The correlation coefficients for the association between the number of episodes of LOC and the olfaction scores, PCL-M scores and MOCA score are shown in table 2. The straight lines in A, B and C correspond to Kendall's rank correlation analysis coefficients in table 2.