Table 3.
Fractional anisotropy of (CC2-CC7 and weighted average across the entire midsagittal CC) fit statistics on males and females.
| Corpus Callosum Midsagittal | |||||
|---|---|---|---|---|---|
| Fractional Anisotropy (× 1000) | |||||
| Quadratic Least Squares Fit: y=β0+β1*age+β2*age2+η | |||||
| R2 | β0±SD (p) | β1±SD (p) | β2±SD (p) | ||
| CC2 | M | 0.121 | 501.4±18.5 (p*) | 3.599±1.372 (0.01) | −0.055±0.020 (0.01) |
| F | 0.072 | 525.6±16.4 (p*) | 1.625±1.138 (0.16) | −0.030±0.017 (0.08) | |
| M&F | 0.084 | 515.5±12.2 (p*) | 2.438±0.870 (0.006) | −0.040±0.013 (0.002) | |
| M vs. F (p) | 0.33 | 0.27 | 0.35 | ||
| CC3 | M | 0.123 | 373.1±17.1 (p*) | 3.260±1.263 (0.01) | −0.044±0.019 (0.03) |
| F | 0.095 | 380.7±13.8 (p*) | 2.430±0.952 (0.01) | −0.033±0.014 (0.02) | |
| M&F | 0.105 | 377.9±10.6 (p*) | 2.760±0.759 (0.0001) | −0.037±0.011 (0.001) | |
| M vs. F | 0.73 | 0.60 | 0.65 | ||
| CC4 | M | 0.156 | 344.0±19.2 (p*) | 3.934±1.420 (0.008) | −0.050±0.021 (0.02) |
| F | 0.105 | 361.2±16.8 (p*) | 2.966±1.164 (0.01) | −0.038±0.017 (0.03) | |
| M&F | 0.128 | 353.3±12.5 (p*) | 3.388±0.890 (0.0001) | −0.043±0.013 (0.001) | |
| M vs. F | 0.50 | 0.60 | 0.65 | ||
| CC5 | M | 0.303 | 323.7±20.7 (p*) | 5.768±1.531 (0.0001) | −0.068±0.023 (0.004) |
| F | 0.333 | 316.5±17.5 (p*) | 5.598±1.211 (0.0001) | −0.065±0.018 (0.0001) | |
| M&F | 0.312 | 320.8±13.2 (p*) | 5.626±0.944 (0.0001) | −0.066±0.014 (0.0001) | |
| M vs. F | 0.79 | 0.93 | 0.93 | ||
| CC6 | M | 0.165 | 388.1±26.3 (p*) | 2.555±1.950 (0.20) | −0.017±0.029 (0.57) |
| F | 0.220 | 344.1±20.9 (p*) | 4.936±1.447 (0.001) | −0.057±0.021 (0.009) | |
| M&F | 0.168 | 364.4±16.6 (p*) | 3.917±1.186 (0.001) | −0.041±0.017 (0.02) | |
| M vs. F | 0.19 | 0.33 | 0.27 | ||
| CC7 | M | 0.068 | 563.6±16.5 (p*) | 1.499±1.224 (0.23) | −0.015±0.018 (0.41) |
| F | 0.192 | 537.0±15.0 (p*) | 3.097±1.035 (0.004) | −0.035±0.015 (0.03) | |
| M&F | 0.130 | 549.0±11.0 (p*) | 2.406±0.783 (0.003) | −0.026±0.012 (0.02) | |
| M vs. F | 0.24 | 0.32 | 0.41 | ||
| Weighted Average @ Midsagittal Whole CC | M | 0.197 | 450.5±12.9 (p*) | 3.037±0.958 (0.003) | −0.038±0.014 (0.01) |
| F | 0.253 | 446.1±10.2 (p*) | 2.992±0.705 (0.0001) | −0.038±0.010 (0.001) | |
| M&F | 0.220 | 448.6±8.0 (p*) | 2.988±0.569 (0.0001) | −0.038±0.008 (0.0001) | |
| M vs. F | 0.79 | 0.97 | 0.96 | ||
p*<0.000001, M=Males, F=Females.