P-value | Total | Focal decrease in melanin | Partial decrease in all field | No basal melanin | Normal basal melanin | Groups |
0.540 | 38 (100%) | 13 (34.21%) | 23 (60.53%) | 0% | 2 (5.26%) | Group A |
28 (100%) | 7 (25%) | 19 (67.86%) | 2 (7.14%) | 0% | Group B | |
| 66 | 20 | 42 | 2 | 2 | Total |