Table 2.
Effect of the contribution of each of 22 variables involved in the study
| Variables | Relevance |
|---|---|
| Length of nasogenian groove | 11.67% |
| Variation-heterogeneity index of the hemoglobin distribution | 10.41% |
| Depth of nasogenian groove | 10.26% |
| Position of eyebrows | 7.52% |
| Method of distribution of hemoglobin in the study area | 6.83% |
| Hemoglobin concentration | 6.70% |
| Method of distribution of melanin in the study area | 6.35% |
| Roughness | 6.28% |
| Variation-heterogeneity index of the melanin distribution | 6.25% |
| Percentage of melanin distribution | 4.56% |
| Length of wrinkles | 4.06% |
| Depth of labiomental groove | 3.71% |
| Thickness of wrinkles | 3.67% |
| Left frontal facial wrinkles | 2.63% |
| Length of labiomental groove | 2.35% |
| Depth of wrinkles | 1.61% |
| Right frontal facial wrinkles | 1.26% |
| Percentage of hemoglobin distribution | 1.25% |
| Left periorbital wrinkles | 0.81% |
| Right periorbital wrinkles | 0.33% |
| Melanin concentration | 0.10% |