Supplementary Figure 1 and Supplemetary Table 1

Supplementary Figure 1: Flow chart of data selection from the National Cancer Database starting with the original 39,182 patients with patients with cutaneous invasive malignancies.

Supplementary Table 1: The association between treatment center volume (TCV) and overall survival. TCV was modeled as a continuous variable and an exploratory sensitivity analysis determined the lowest threshold TCV associated with an OS difference. The model was adjusted for patient, tumor-specific, management, and hospital-setting characteristics.