Table 3. Predictive Scoring Model for the Diagnosis of Subungual Melanoma In Situ.
| Dermoscopic Variable | β Coefficient (95% CI) | Scorea |
|---|---|---|
| Width of pigmentation, mm | ||
| ≥3b | 1.67 (0.00-3.33) | 1 |
| ≥6 | 3.38 (1.75-5.01) | 2 |
| Multicolor pigmentation | 2.45 (0.79-4.11) | 1 |
| Pattern | ||
| Asymmetry | 3.53 (1.36-5.70) | 2 |
| Border fading | 2.23 (0.86-3.60) | 1 |
| Hutchinson signc | 2.90 (0.70-5.10) | 2 |
a
Scores were rounded to the nearest integer.
b
Used as reference regression unit for score standardization.
c
Defined as periungual pigmentation of the nail fold or hyponychium.