Table 2.
Mean (SD) for tract-averaged mean diffusivity (〈D〉) and fractional anisotropy (FA) for eight tracts-of-interest.
| Acceptable tracts |
Mean diffusivity〈D〉(×10−3 mm2/s) |
FA |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Preterm (n = 79) | Control (n = 22) | Preterm | Control | Unadjusted p-value | Adjusted p-value⁎ | Preterm | Control | Unadjusted p-value | Adjusted p-value⁎ | |
| Genu | 74 | 22 | 1.498 (0.080) | 1.362 (0.068) | <0.001 | <0.001 | 0.21 (0.04) | 0.25 (0.04) | <0.001 | 0.428 |
| Splenium | 68 | 22 | 1.570 (0.152) | 1.363 (0.067) | <0.001 | <0.001 | 0.26 (0.04) | 0.31 (0.04) | <0.001 | 0.009 |
| Left CCG | 71 | 18 | 1.372 (0.095) | 1.298 (0.044) | 0.002 | 0.115 | 0.20 (0.03) | 0.23 (0.03) | <0.002 | 0.738 |
| Right CCG | 65 | 18 | 1.350 (0.062) | 1.286 (0.053) | <0.001 | 0.053 | 0.19 (0.03) | 0.20 (0.02) | 0.15 | 0.259 |
| Left CST | 79 | 21 | 1.227 (0.067) | 1.157 (0.062) | <0.001 | 0.292 | 0.29 (0.03) | 0.32 (0.02) | <0.001 | 0.147 |
| Right CST | 79 | 21 | 1.178 (0.064) | 1.107 (0.049) | <0.001 | 0.03 | 0.27 (0.03) | 0.30 (0.02) | 0.001 | 0.469 |
| Left ILF | 76 | 19 | 1.654 (0.237) | 1.409 (0.071) | <0.001 | 0.004 | 0.20 (0.03) | 0.23 (0.02) | <0.001 | 0.01 |
| Right ILF | 78 | 21 | 1.710 (0.254) | 1.503 (0.163) | 0.001 | 0.005 | 0.22 (0.03) | 0.24 (0.02) | 0.003 | 0.134 |
⁎
Adjusted p-values are corrected for postmenstrual age at scan and bold type indicates significant differences in tract-averaged values after adjustment (significance threshold p < 0.05, FDR corrected)