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| Pigmentation* | |
| Normal | 0 |
| Hypopigmentation | 1 |
| Hyperpigmentation | 2 |
| Vascularity | |
| Normal | 0 |
| Pink | 1 |
| Red | 2 |
| Purple | 3 |
| Pliability | |
| Normal | 0 |
| Supple | 1 |
| Yielding | 2 |
| Firm | 3 |
| Banding | 4 |
| Contracture | 5 |
| Height | |
| Normal (flat) | 0 |
| >0 and <2 mm | 1 |
| ≥2 and <5 mm | 2 |
| ≥5 mm | 3 |
*Since hyperpigmentation is not necessarily more severe than hypopigmentation, this nominal categorical variable was recoded as binary (1 point for either hypo- or hyperpigmentation) for regression analysis.
