Table 3.
Paired t Tests Between Controls and Brain Injury Patients
| NML vs PCS | NML vs MBI | NML vs TBI-1 | NML vs TBI-2 | |||||
|---|---|---|---|---|---|---|---|---|
| t | P < | t | P < | t | P < | t | P < | |
| NEUROCOGNITION INDEX ss | 5.46 | .0000 | 0.82 | .4156 | 17.50 | .0000 | 22.18 | .0000 |
| MEMORY ss | 1.65 | .1004 | 0.76 | .4495 | 8.90 | .0000 | 11.34 | .0000 |
| PSYCHOMOTOR SPEED ss | 3.34 | .0011 | 0.16 | .8763 | 13.54 | .0000 | 16.94 | .0000 |
| REACTION TIME ss | 3.85 | .0002 | 0.46 | .6441 | 12.41 | .0000 | 8.74 | .0000 |
| COGNITIVE FLEXIBILITY ss | 3.75 | .0003 | 0.39 | .6943 | 15.32 | .0000 | 16.98 | .0000 |
| COMPLEX ATTENTION ss | 3.34 | .0011 | -0.55 | .5820 | 14.19 | .0000 | 15.89 | .0000 |
NML = normal controls; PCS = patients with postconcussion syndrome; MBI = mild brain injury; TBI-1 = severe traumatic brain injury; TBI-2 = severe, disabling traumatic brain injury; ss = subjects