Table III.
Cohort Differences in Individual Fiber Tract WML (ftWML) Ratios
| Cohort | ATR, L | ATR, R | CCF | CCO | CgH, L | CgH, R | CgC, L | CgC, R | CST, L | CST, R |
|---|---|---|---|---|---|---|---|---|---|---|
| Nondepressed (N = 37) | 0.0107 (0.0147) | 0.0136 (0.0211) | 0.0036 (0.0057) | 0.0112 (0.0162) | 0.0008 (0.0014) | 0.0037 (0.0050) | 0.0003 (0.0006) | 0.0011 (0.0006) | 0.0063 (0.0.0137) | 0.0091 (0.0160) |
| Depressed (N = 54) | 0.0127 (0.0204) | 0.0132 (0.0206) | 0.0049 (0.0094) | 0.0148 (0.0171) | 0.0007 (0.0012) | 0.0048 (0.0057) | 0.0012 (0.0038) | 0.0013 (0.0031) | 0.0063 (0.0194) | 0.0086 (0.0189) |
| F (1,86) value | 1.44 | 0.80 | 1.23 | 3.08 | 0.10 | 0.82 | 4.62 | 1.03 | 0.20 | 0.83 |
| P | 0.2339 | 0.3721 | 0.2713 | 0.0829 | 0.7565 | 0.3683 | 0.0344 | 0.3138 | 0.6598 | 0.3657 |
| IFO, L | IFO, R | ILF, L | ILF, R | SLFb, L | SLFb, R | SLFt, L | SLFt, R | UNC, L | UNC, R | |
| Nondepressed (N = 37) | 0.0060 (0.0100) | 0.0093 (0.0143) | 0.0064 (0.0117) | 0.0067 (0.0086) | 0.0051 (0.0171) | 0.0060 (0.0171) | 0.0054 (0.0188) | 0.0057 (0.0214) | 0.0027 (0.0062) | 0.0052 (0.0053) |
| Depressed (N = 54) | 0.0078 (0.0108) | 0.0119 (0.0167) | 0.0093 (0.0131) | 0.0085 (0.0092) | 0.0056 (0.0148) | 0.0065 (0.0167) | 0.0057 (0.0164) | 0.0059 (0.0173) | 0.0019 (0.0032) | 0.0047 (0.0072) |
| F (1,86) value | 2.35 | 1.86 | 3.02 | 0.83 | 0.35 | 0.63 | 0.21 | 0.12 | 0.03 | 0.56 |
| P | 0.1288 | 0.1757 | 0.0859 | 0.3639 | 0.5540 | 0.4308 | 0.6446 | 0.7252 | 0.8572 | 0.4552 |
Data presented as mean ratio (standard deviation). Statistical test results derive from models predicting ftWML ratio, controlling for diagnostic cohort, age, sex, presence of hypertension, and race. See Table I for key to tract abbreviations.