Table 2.
Comparisons of patient characteristics in the model development and validation datasets for localized melanoma
Variable | Model Development (Training) Dataset (n=14,760) % | Model Validation (Testing) Dataset (n=10,974) % |
---|---|---|
Age | ||
<50 | 44.9 | 45.0 |
50–59 | 20.7 | 20.4 |
60–69 | 19.1 | 18.0 |
70–79 | 11.8 | 12.6 |
≥80 | 3.6 | 4.0 |
Gender | ||
Male | 54.2 | 52.9 |
Female | 45.8 | 47.1 |
Lesion Site | ||
Axial (trunk, head, neck) | 60.8 | 48.3 |
Extremity | 39.2 | 51.7 |
Tumor Thickness (mm) | ||
0–0.50 | 22.3 | 18.1 |
0.51–1.00 | 23.3 | 28.1 |
1.01–2.00 | 29.6 | 26.4 |
2.01–3.00 | 11.9 | 12.5 |
3.01–6.00 | 9.9 | 11.7 |
>6.00 | 3.2 | 3.1 |
Ulceration | ||
No | 80.8 | 80.3 |
Yes | 19.2 | 19.7 |
Level of Invasion | ||
II | 22.0 | 20.7 |
III | 28.8 | 33.6 |
IV | 44.8 | 40.7 |
V | 4.3 | 5.0 |
Stage | ||
IA | 36.0 | 37.4 |
IB | 33.4 | 30.1 |
IIA | 15.7 | 16.3 |
IIB | 10.3 | 11.1 |
IIC | 4.6 | 5.1 |