Table 2.
Comparison between Splenium FA and Immediate Memory Recall in Separate Cross‐Sectional Cohort of Controls and Patients after TBI
| Controls | TBI | Statistic | p | |
|---|---|---|---|---|
| No. | 40 | 82 | ||
| Age, yr, mean ± SD (range) | 42.1 ± 12.6 (21–72) | 42.4 ± 12.0 (20–72) | t −0.14 | 0.89 |
| Male, No. [%]a | 30 [75.0] | 69 [84.1] | χ2 0.93 | 0.33 |
| Time since TBI, median mo, {IQR} | n/a | 30.5 {12.5–153.8} | n/a | n/a |
| SPCC FA, median {IQR} (range)b | 0.8037 {0.7760, 0.8203} (0.7603–0.8408) | 0.7667 {0.6989, 0.7926} (0.4072–0.8221) | Z −5.13 | <0.001 |
| Logical Memory I total, mean ± SD (range) | 50.00 ± 8.39 (33–68) | 39.24 ± 12.15 (13–66) | t 5.70 | <0.001 |
Comparison of demographics, average FA in SPCC, and Logical Memory I total score (immediate recall) in separate cross‐sectional cohort of healthy controls and patients after moderate–severe traumatic brain injury.
Comparison between groups was made by 2‐tailed unpaired Student t test, except as indicated:
a
Chi‐square test.
b
Mann–Whitney test, as data were not normally distributed.
FA = fractional anisotropy; IQR = interquartile range; n/a = not applicable; SD = standard deviation; SPCC = splenium of the corpus callosum; TBI = traumatic brain injury.