| P-Value | Total | Focal decrease in melanin | Partial decrease in melanin | Normal basal melanin. | Groups |
| 0.692 | 38 (100%) | 11 (28.95%) | 24 (63.16%) | 3 (7.89%) | Group A |
| 28 (100%) | 9 (23.95%) | 19 (67.86%) | 0 (0%) | Group B | |
|
| 66 | 20 | 43 | 3 | Total |