Patient, tumour and treatment characteristics (N=100)
| Characteristic | Value |
| Age, median (min, max), years | 67 (41, 94) |
| Sex, No. (%) | |
| Male | 40 (40) |
| Female | 60 (60) |
| Race/ethnicity, No. (%) | |
| White | 71 (71) |
| Hispanic | 19 (19) |
| Black | 4 (4) |
| Asian | 6 (6) |
| Laterality, No. (%) | |
| Right | 46 (46) |
| Left | 54 (54) |
| Location, No. (%) | |
| Upper lid | 53 (53) |
| Lower lid | 26 (26) |
| Both lids | 18 (18) |
| Medial canthus | 3 (3) |
| Intraepithelial neoplasia, No. (%) | |
| No | 69 (69) |
| Yes | 31 (31) |
| Perineural invasion, No. (%) | |
| No | 93 (93) |
| Yes | 7 (7) |
| Lymphovascular invasion, No. (%) | |
| No | 98 (98) |
| Yes | 2 (2) |
| Initial treatment, No. (%) | |
| Local excision with reconstruction | 85 (85) |
| Exenteration | 14 (14) |
| Chemoradiation therapy | 1 (1) |
| Adjuvant treatment, No. (%) | |
| None | 83 (83) |
| Radiation therapy | 9 (9) |
| Chemoradiation therapy | 2 (2) |
| Topical chemotherapy with mitomycin C | 6 (6) |