Table 3.
Parameters for developmental trajectories
| Anatomical
Structure |
Best
fitting model |
Sex | Intercept (s.e.) | Age
coefficient β1 (s.e.) |
Age
coefficient β2 (s.e.) |
Age
coefficient β3 (s.e.) |
|---|---|---|---|---|---|---|
| Total cerebral
volume |
Cubic | M | 1241.116 (7.04) | 2.206 (0.64) | -0.911 (0.07) | 0.055 (0.01) |
| F | 1118.202 (7.70) | -5.452 (0.79) | -0.658 (0.09) | 0.070 (0.01) | ||
|
| ||||||
| Total gray | Cubic | M | 765.176 (4.44) | -4.165 (0.53) | -0.563 (0.06) | 0.040 (0.01) |
| F | 694.095 (4.89) | -8.932 (0.65) | -0.470 (0.07) | 0.062 (0.01) | ||
|
| ||||||
| Total white | Cubic | M | 464.477 (3.17) | 5.995 (0.33) | -0.341 (0.04) | 0.015 (0.01) |
| F | 414.069 (3.48) | 3.334 (0.40) | -0.190 (0.05) | 0.007 (0.01) | ||
|
| ||||||
| Frontal gray | Cubic | M | 240.397 (1.49) | -1.630 (0.18) | -0.223 (0.02) | 0.0144 (0.00) |
| F | 222.85 (1.65) | -2.572 (0.22) | -0.207 (0.03) | 0.020 (0.00) | ||
|
| ||||||
| Frontal white | Quadratic | M | 175.908 (1.28) | 2.638 (0.081) | 2.638 (0.08) | n.a. |
| F | 160.653 (1.41) | 1.768 (0.10) | -0.072 (0.01) | n.a. | ||
|
| ||||||
| Parietal gray | Cubic | M | 128.605 (0.90) | -1.548 (0.12) | -0.103 (0.01) | 0.011 (0.01) |
| F | 115.644 (1.00) | -2.466 (0.14) | -0.070 (0.02) | 0.015 (0.00) | ||
|
| ||||||
| Parietal white | Quadratic | M | 90.181 (0.71) | 1.224 (0.06) | -0.045 (0.01) | n.a. |
| F | 80.942 (0.78) | 0.937 (0.08) | -0.042 (0.01) | n.a. | ||
|
| ||||||
| Temporal gray | Cubic | M | 198.354 (1.22) | -0.285 (0.14) | -0.129 (0.02) | 0.007 (0.00) |
| F | 180.370 (1.34) | -1.227 (0.17) | -0.137 (0.02) | 0.011 (0.00) | ||
|
| ||||||
| Temporal white | Quadratic | M | 99.964 (0.73) | 1.353 (0.07) | -0.067 (0.01) | 0.001 (0.00) |
| F | 90.068 (0.80) | 0.879 (0.09) | -0.061 (0.01) | 0.002 (0.00) | ||
|
| ||||||
| Occipital gray | Cubic | M | 67.511 (0.58) | -0.128 (0.07) | 0.003 (0.01) | -0.001 (0.00) |
| F | 59.012 (0.64) | -0.778 (0.08) | -0.011 (0.01) | 0.004 (0.00) | ||
|
| ||||||
| Occipital white | Quadratic | M | 44.707 (0.39) | 0.827 (0.05) | -0.015 (0.01) | n.a. |
| F | 39.396 (0.43) | 0.463 (0.06) | -0.023 (0.01) | n.a. | ||
|
| ||||||
| Corpus callosum | Linear | M | 54.185 (5.11) | 3.87 (0.39) | n.a. | n.a. |
| F | 53.640 (0.56) | 3.45 (0.48) | n.a. | n.a. | ||
|
| ||||||
| Caudate nucleus | Cubic | M | 10.054 (0.07) | 0.007 (0.01) | -0.004 (0.00) | 0.000 (0.00) |
| F | 9.659 (0.08) | -0.032 (0.01) | -0.005 (0.00) | 0.00 (0.00) | ||
|
| ||||||
| Lateral ventricles | Quadratic | M | 11.431 (0.40) | 0.249 (0.03) | -0.005 (0.00) | n.a. |
| F | 10.199 (0.43) | 0.219 (0.03) | -0.007 (0.00) | n.a. | ||
Intercept is the predicted value at the average age of the sample (13.1 years). s.e. = standard error.