Table 1.
Distribution of Patient’s Metadata
| Variables | Malignant Melanoma (n=374) | Nonmalignant Melanoma (n=826) | p-value |
|---|---|---|---|
| Age, mean, (±SD), year | 62.6 (±17.10) | 17.5 (±11.20) | <0.01 |
| Gender, n (%) | 0.38 | ||
| Female | 127 (33.96) | 300 (36.32) | |
| Male | 213 (56.95) | 443 (53.63) | |
| Unknown/missing | 34 (9.09) | 83 (10.5) | |
| Anatomy site, n (%) | 0.01 | ||
| Lower extremity | 54 (14.44) | 166 (20.10) | |
| Posterior torso | 48 (12.83) | 198 (23.97) | |
| Anterior torso | 34 (9.09) | 130 (15.74) | |
| Upper extremity | 28 (7.49) | 138 (16.71) | |
| Head/neck | 21 (5.61) | 92 (11.14) | |
| Lateral torso | 2 (0.53) | 11 (1.33) | |
| Other (7 sites) | 0 (0.00) | 82 (9.93) | |
| Unknown/missing | 187 (50.00) | 9 (1.09) | |
| Location, n (%) | 0.09 | ||
| Back | 45 (12.03) | 132 (15.98) | |
| Lower extremity | 28 (7.49) | 98 (11.86) | |
| Trunk | 14 (3.74) | 69 (8.35) | |
| Abdomen | 13 (3.48) | 71 (8.60) | |
| Chest | 11 (2.94) | 19 (2.30) | |
| Face | 9 (2.41) | 38 (4.60) | |
| Upper extremity | 9 (2.41) | 36 (4.36) | |
| Foot | 6 (1.60) | 15 (1.82) | |
| Lower limb | 6 (1.60) | 10 (1.21) | |
| Other (139 locations) | 53 (14.17) | 330 (39.95) | |
| Unknown/missing | 180 (48.13) | 8 (0.97) |