Table 3.
Neuropsychological performance for TBI and control groups
| TBI | group | Control | group | t (p values) | |
|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ||
| Digit forwards | 6.1 | 1.0 | 6.6 | 1.1 | -1.1 (ns) |
| Digit backwards | 4.3 | 1.1 | 4.9 | 0.9 | -1.6 (ns) |
| LNS | 8.6 | 2.7 | 11.0 | 2.8 | -2.4 (0.02) |
| 2- back (d-prime) | 2.7 | 1.0 | 3.4 | 0.4 | -2.6 (0.01) |
| Goals 2-back | 81.4 | 18.3 | 95.2 | 4.8 | -2.7 (0.01) |
| Reaction time 2-back (ms) | 693.4 | 200.0 | 475.7 | 88.9 | 3.7 (0.002) |
| RBMT (profile) | 18.1 | 3.4 | 22.6 | 1.3 | -4.85 (0.001) |
TBI: traumatic brain injury; Letter-Number Sequencing (WAIS-III); Goals: number of targets correctly identified; RBMT: Rivermead Behavioral Memory Test; ns: not significant.