TABLE 2.
Estimated values of the regression coefficients for the tract‐level analyses
| FBA metric | Tracts | All | Male | Female | ||||
|---|---|---|---|---|---|---|---|---|
| Age | Sex | TIV | Age | TIV | Age | TIV | ||
| FD | ATR | ‐4.19E‐04 | −9.13E‐03 | −2.84E‐05 | −4.46E‐04 | −4.35E‐05 | −4.01E‐04 | −2.11E‐05 |
| CCG | −2.66E‐04 | −5.94E‐03 | −3.23E‐05 | −2.64E‐04 | −4.85E‐05 | −2.66E‐04 | −2.45E‐05 | |
| CH | −6.10E‐04 | 1.82E‐02 | −1.77E‐05 | −7.04E‐04 | 6.61E‐06 | −5.54E‐04 | −2.91E‐05 | |
| CST | −1.90E‐04 | 3.86E‐03 | −3.61E‐05 | −2.18E‐04 | −4.43E‐05 | −1.71E‐04 | −3.20E‐05 | |
| FMaj | −6.46E‐05 | −1.13E‐02 | −4.67E‐05 | −9.29E‐05 | −3.47E‐05 | −4.80E‐05 | −5.25E‐05 | |
| FMin | −4.09E‐04 | −4.35E‐03 | −1.02E‐05 | −5.69E‐04 | −6.93E‐06 | −3.11E‐04 | −1.12E‐05 | |
| IFOF | −3.92E‐06 | −2.51E‐03 | −1.33E‐05 | −1.08E‐04 | −1.69E‐05 | 6.05E‐05 | −1.12E‐05 | |
| ILF | −3.73E‐06 | 8.27E‐03 | 8.14E‐06 | −6.23E‐06 | −5.58E‐06 | −1.27E‐06 | 1.48E‐05 | |
| SLF | −2.08E‐04 | 4.29E‐05 | −2.22E‐05 | −3.20E‐04 | −3.20E‐05 | −1.38E‐04 | −1.71E‐05 | |
| SLtem | −1.02E‐04 | 1.05E‐02 | −7.52E‐05 | −7.44E‐04 | −1.32E‐04 | 2.97E‐04 | −4.55E‐05 | |
| UF | −1.79E‐04 | −8.10E‐03 | −3.03E‐05 | −2.76E‐04 | −5.07E‐05 | −1.19E‐04 | −2.01E‐05 | |
| logFC | ATR | 4.31E‐04 | 1.13E‐03 | 4.77E‐04 | 6.49E‐04 | 4.25E‐04 | 3.01E‐04 | 5.02E‐04 |
| CCG | −1.76E‐03 | −5.47E‐03 | 3.95E‐04 | −1.04E‐03 | 3.12E‐04 | −2.20E‐03 | 4.33E‐04 | |
| CH | 1.01E‐03 | −5.68E‐03 | 3.11E‐04 | 1.52E‐03 | 2.50E‐04 | 6.98E‐04 | 3.39E‐04 | |
| CST | −8.37E‐04 | −6.37E‐03 | 2.69E‐04 | −9.37E‐04 | 1.50E‐04 | −7.68E‐04 | 3.26E‐04 | |
| FMaj | −5.67E‐04 | −4.60E‐03 | 2.97E‐04 | −4.61E‐04 | 2.81E‐04 | −6.32E‐04 | 3.04E‐04 | |
| FMin | −1.75E‐03 | 1.66E‐02 | 4.71E‐04 | −1.32E‐03 | 4.75E‐04 | −2.02E‐03 | 4.68E‐04 | |
| IFOF | −7.28E‐04 | 1.09E‐02 | 4.06E‐04 | −5.02E‐04 | 3.90E‐04 | −8.67E‐04 | 4.13E‐04 | |
| ILF | −7.00E‐04 | 1.77E‐02 | 4.29E‐04 | −1.42E‐04 | 3.48E‐04 | −1.04E‐03 | 4.67E‐04 | |
| SLF | 1.33E‐04 | 2.25E‐02 | 4.58E‐04 | 5.21E‐04 | 4.39E‐04 | −1.04E‐04 | 4.65E‐04 | |
| SLtem | −6.38E‐04 | 4.37E‐02 | 4.96E‐04 | −5.23E‐04 | 3.82E‐04 | −7.01E‐04 | 5.51E‐04 | |
| UF | 1.52E‐04 | −2.03E‐02 | 2.84E‐04 | 3.80E‐04 | 2.48E‐04 | 1.45E‐05 | 3.00E‐04 | |
| FDC | ATR | −3.33E‐04 | −1.07E‐02 | 1.15E‐04 | −3.16E‐04 | 8.98E‐05 | −3.42E‐04 | 1.28E‐04 |
| CCG | −8.43E‐04 | −9.33E‐03 | 8.60E‐05 | −6.66E‐04 | 5.47E‐05 | −9.49E‐04 | 1.01E‐04 | |
| CH | −1.67E‐04 | 1.50E‐02 | 1.04E‐04 | −8.79E‐05 | 1.09E‐04 | −2.16E‐04 | 1.01E‐04 | |
| CST | −6.58E‐04 | −1.75E‐03 | 1.02E‐04 | −8.39E‐04 | 4.63E‐05 | −5.43E‐04 | 1.30E‐04 | |
| FMaj | −2.43E‐04 | −1.62E‐02 | 1.38E‐04 | −2.83E‐04 | 1.59E‐04 | −2.20E‐04 | 1.28E‐04 | |
| FMin | −1.05E‐03 | 2.01E‐03 | 1.52E‐04 | −1.18E‐03 | 1.70E‐04 | −9.68E‐04 | 1.44E‐04 | |
| IFOF | −3.25E‐04 | 6.46E‐04 | 1.46E‐04 | −3.70E‐04 | 1.43E‐04 | −2.97E‐04 | 1.48E‐04 | |
| ILF | −3.17E‐04 | 1.85E‐02 | 2.02E‐04 | −1.05E‐04 | 1.58E‐04 | −4.45E‐04 | 2.22E‐04 | |
| SLF | −2.03E‐04 | 8.18E‐03 | 1.40E‐04 | −2.37E‐04 | 1.28E‐04 | −1.82E‐04 | 1.46E‐04 | |
| SLtem | −4.89E‐04 | 4.51E‐02 | 2.78E‐04 | −1.32E‐03 | 1.37E‐04 | 3.10E‐05 | 3.50E‐04 | |
| UF | −1.74E‐04 | −1.85E‐02 | 8.43E‐05 | −2.59E‐04 | 5.08E‐05 | −1.19E‐04 | 1.01E‐04 | |
Note: Values of the estimated regression coefficients in bold are significant (corrected for multiple comparisons using FDR q < 0.05).
Abbreviations: ATR, anterior thalamic radiation; CCG, cingulum (cingulate gyrus); CH, cingulum (hippocampus); CST, corticospinal tract; FC, fiber cross section; FD, fiber density; FDC, FD and cross section; FDR, false discovery rate; FMaj, forceps major; FMin, forceps minor; IFOF, inferior fronto‐occipital fasciculus; ILF, inferior longitudinal fasciculus; SLF, superior longitudinal fasciculus; SLTem, superior longitudinal fasciculus (temporal); UF, uncinate fasciculus.