Table 4:

Statistical report comparing means of susceptibility values within injured and control groupsa

ROISusceptibility Group Differences (Injured vs Control)RTP vs 24-Hour Suscept
24 Hours8 Days6 Months
White matter.032b0.65b.001b1.01b.4630.25.022b0.55
Gray matter.980−0.01.255−0.34.382−0.30.146−0.26
L ATR.017b0.72b.0690.55.735−0.11.1460.37
R cing (hipp).0720.53.011b,c0.79b.012b0.91b.015b,c0.58b
Forceps minor.017b0.75b.008b,c0.82b.7380.11.989<0.01
L IFOF.1270.46.037b,c0.63b.7300.12.015b,c0.58b
R IFOF.0730.55.019b,c0.72b.7830.09.4800.18
L ILF.1940.39.027b,c0.67b.6500.15.1460.37
R ILF.1870.40.034b,c0.64b.8140.08.003b,c0.67b
L SLF.3340.28.014b,c0.75b.5500.21.019b,c0.56b
R SLF.021b0.72b.002b,c1.00b.8190.08.015b,c0.58b
L SLF (temp).8470.06.035b,c0.64b.5100.23.034b,c0.52b
R SLF (temp).010b0.82b.007b,c0.83b.5760.19.4120.21
  • Note:—ATR indicates anterior thalamic radiation; cing, cingulum; hipp, hippocampus; IFOF, inferior fronto-occipital fasciculus; ILF, inferior longitudinal fasciculus; SLF, superior longitudinal fasciculus; temp, temporal; RTP, return to play temporal duration; D, effect sizes; Suscept, susceptibility; L, left; R, right.

  • a White matter regions showing significant trends and the global gray matter compartment are shown. At each visit, group differences are characterized with P values computed using 2-tailed independent samples t tests and effect sizes are computed using the Cohen D. The Pearson correlation of RTP temporal duration vs 24-hour susceptibility values for individual injured subjects is also presented. P values and effect sizes (ρ) are displayed. P values for the subregional analyses are reported without multiple-comparison corrections.

  • b Effects that showed statistical significance (P < .05).

  • c Statistically significant after correction for multiple comparisons.