Patient demographics
| Number of patients (total=160) | Number of at-risk groins (total=265) | P value | ||
| Race | Black | 10 (6.3%) | 17 (6.4%) | <0.001 |
| White | 140 (87.5%) | 234 (88.3%) | ||
| Asian | 4 (2.5%) | 5 (1.9%) | ||
| Declined to answer | 6 (3.8 %) | 9 (3.4%) | ||
| Histology | Squamous cell | 114 (71.3%) | 195 (73.6%) | <0.001 |
| Melanoma | 38 (23.8%) | 60 (22.6%) | ||
| Paget’s disease (adenocarcinoma) | 4 (2.5%) | 6 (2.3%) | ||
| Yolk sac tumor | 1 (0.6%) | 1 (0.4%) | ||
| Sarcoma | 2 (1.3%) | 2 (0.8%) | ||
| Basal cell carcinoma | 1 (0.6%) | 1 (0.4%) | ||