Brain parenchymal fraction 5–20 years
| Age (yr) | Total | Mean | 5–10 Years (P Value) | 10–15 Years (P Value) |
|---|---|---|---|---|
| Male | ||||
| 5–10 | 18 | 0.872 | ||
| 10–15 | 20 | 0.879 | NS | |
| 15–20 | 72 | 0.891 | <.001 | .004 |
| Female | ||||
| 5–10 | 12 | 0.874 | ||
| 10–15 | 20 | 0.877 | NS | |
| 15–20 | 70 | 0.889 | .003 | .003 |
Note:—NS indicates not significant.