Table 1.
Patient demographic and tumor characteristics
| Characteristics |
NYU1 (1972-1982)
|
NYU2 (2002-2009)
|
||
|---|---|---|---|---|
| Nevus-assoc | De novo | Nevus-assoc | De novo | |
| (n = 198, 19.3%) | (n = 826, 80.7%) | (n = 349, 31.0%) | (n = 776, 69.0%) | |
| Age, y | ||||
| Median (range) | 46.0 (19–88) | 54.0 (9–91) | 55.0 (19–91) | 61.0 (6–97) |
| Missing, No. (%) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Sex, No. (%) | ||||
| Male | 92 (46.5) | 408 (49.4) | 201 (57.6) | 415 (53.5) |
| Female | 106 (53.5) | 418 (50.6) | 148 (42.4) | 361 (46.5) |
| Missing | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Primary tumor thickness, mm | ||||
| No. (range) | 1.0 (0.1–9.8) | 1.4 (0.1–15) | 0.7 (0.1–30) | 1.0 (0.12–30) |
| 0–1.00, No. (%) | 105 (53.0) | 297 (36.0) | 238 (68.2) | 381 (49.1) |
| 1.00–2.00, No. (%) | 51 (25.8) | 215 (26.0) | 70 (20.1) | 169 (21.8) |
| 2.00–4.00, No. (%) | 24 (12.1) | 170 (20.6) | 26 (7.4) | 138 (17.8) |
| >4.00, No. (%) | 12 (6.1) | 98 (11.9) | 14 (4.0) | 88 (11.3) |
| Missing, No. (%) | 6 (3.0) | 46 (5.6) | 1 (0.3) | 0 (0.0) |
| Primary tumor ulceration status, No. (%) | ||||
| Absent | 164 (82.8) | 613 (74.2) | 317 (90.8) | 600 (77.3) |
| Present | 31 (15.7) | 192 (23.2) | 32 (9.2) | 175 (22.6) |
| Missing | 3 (1.5) | 21 (2.5) | 0 (0.0) | 1 (0.1) |
| Primary tumor anatomic site, No. (%) | ||||
| Axial | 89 (44.9) | 293 (35.5) | 182 (52.1) | 253 (32.6) |
| Head/Neck | 31 (15.7) | 119 (14.4) | 35 (10.0) | 149 (19.2) |
| Extremity | 75 (37.9) | 410 (49.6) | 132 (37.8) | 374 (48.2) |
| Missing | 3 (1.5) | 4 (0.5) | 0 (0.0) | 0 (0.0) |
| Primary tumor mitosis, No. (%) | ||||
| Absent | 74 (37.4) | 298 (36.1) | 168 (48.1) | 271 (34.9) |
| Present | 100 (50.5) | 429 (51.9) | 175 (50.1) | 500 (64.4) |
| Missing | 24 (12.1) | 99 (12.0) | 6 (1.7) | 5 (0.6) |
| Primary tumor histologic subtype, No. (%) | ||||
| Superficial | 164 (82.8) | 555 (67.2) | 249 (71.3) | 419 (54.0) |
| Nodular | 9 (4.5) | 101 (12.2) | 58 (16.6) | 236 (30.4) |
| Acral | 4 (2.0) | 19 (2.3) | 2 (0.6) | 32 (4.1) |
| Lentigo | 7 (3.5) | 41 (5.0) | 11 (3.2) | 33 (4.3) |
| Others | 4 (2.0) | 34 (4.1) | 24 (6.9) | 49 (6.3) |
| Missing | 10 (5.1) | 76 (9.2) | 5 (1.4) | 7 (0.9) |
| AJCC * stage at pathological diagnosis, No. (%) | ||||
| I | 147 (74.2) | 450 (54.5) | 281 (80.5) | 489 (63.0) |
| II | 34 (17.2) | 224 (27.1) | 30 (8.6) | 173 (22.3) |
| III/IV | 12 (6.1) | 108 (13.1) | 38 (10.9) | 114 (14.7) |
| Missing | 5 (2.5) | 44 (5.3) | 0 (0.0) | 0 (0.0) |
*AJCC = American Joint Committee on Cancer.