Table 3.
Statistical estimators of the triangles between ROIs in each age group
| Age group (years) | N triangles | Mean | SD | Median | Min | Max | Skewness |
|---|---|---|---|---|---|---|---|
| < 60 | 393 | 0.19 | 0.03 | 0.18 | 0.16 | 0.29 | 1.21 |
| 60–64 | 376 | 0.19 | 0.03 | 0.18 | 0.16 | 0.30 | 1.18 |
| 65–69 | 489 | 0.19 | 0.03 | 0.19 | 0.16 | 0.31 | 1.99 |
| 70–74 | 493 | 0.19 | 0.03 | 0.19 | 0.16 | 0.31 | 1.02 |
| 75–79 | 205 | 0.19 | 0.03 | 0.18 | 0.16 | 0.28 | 1.24 |
| ≥ 80 | 466 | 0.20 | 0.03 | 0.19 | 0.16 | 0.33 | 0.65 |
N Triangles: number of triangles. Skewness was calculated by Fisher’s coefficient g1. When skewness is different from 0 it indicates that the distribution of the variable is not symmetric.