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Table 1 Study population statistics summarizing patient and primary tumor characteristics

From: Melanoma risk loci as determinants of melanoma recurrence and survival

Age at pathological diagnosis (years)   Primary tumor thickness (mm)  
Median (Range) 58 (15–97) Median (Range) 0.97 (0.1-33)
Self-reported ethnicity   AJCC a stage at pathological diagnosis
Ashkenazi Jewish 204 (22.9%) I 566 (63.5%)
Irish 95 (10.7%) II 150 (16.8%)
Italian 46 (5.2%) III 150 (16.8%)
Other non-hispanic white 511 (57.3%) IV 23 (2.6%)
Other 35 (3.9%) Unclassified 2 (0.2%)
Gender   Primary tumor ulceration  
Male 501 (56.2%) Absent 684 (76.8%)
Female 390 (43.8%) Present 158 (17.7%)
   Unclassified/Unknown 49 (5.5%)
Family history of melanoma   Primary tumor mitosis  
No 727 (81.6%) Absent 326 (36.6%)
Yes 139 (15.6%) Present 479 (53.8%)
Unknown 25 (2.8%) Unclassified/Unknown 86 (9.6%)
Sentinel lymph node positive   Primary tumor anatomic site  
No 774 (86.9%) Axial 469 (52.6%)
Yes 117 (13.1%) Extremity 378 (42.4%)
   Unclassified/Unknown 44 (4.9%)
Status at last follow-up   Primary tumor histological subtype  
Alive, no melanoma 685 (76.9%) Superficial spreading melanoma 470 (52.7%)
Alive, with melanoma 31 (3.5%) Nodular melanoma 223 (25.0%)
Alive, status unknown 28 (3.1%) Acral lentiginous melanoma 25 (2.8%)
Died, no melanoma 14 (1.6%) Lentigo maligna melanoma 24 (2.7%)
Died, with melanoma 131 (14.7%) Desmoplastic melanoma 31 (3.5%)
Died, status unknown 2 (0.2%) Other melanoma 37 (4.2%)
   Unclassified/Unknown 81 (9.1%)
Recurrence   Multiple primary melanoma  
No 639 (71.7%) No 745 (83.6%)
Yes 252 (28.3%) Yes 144 (16.2%)
   Unknown 2 (0.2%)
  1. aAJCC, American Joint Committee on Cancer.