Table 1.
Baseline characteristics of melanoma patients according to PDW levels.
| Variables | Total n (%) | PDW ≤ 17.2 n (%) | PDW > 17.2 n (%) | P value |
|---|---|---|---|---|
| Age (years) | 0.849 | |||
| <60 | 127 (57.7) | 90 (57.3) | 37 (58.7) | |
| ≥60 | 93 (42.3) | 67 (42.7) | 26 (41.3) | |
| Gender | 0.119 | |||
| Male | 104 (47.3) | 69 (43.9) | 35 (55.6) | |
| Female | 116 (52.7) | 88 (56.1) | 28 (44.4) | |
| Tumor location | 0.728 | |||
| Sun-exposed (head and neck) | 22 (10.0) | 15 (9.6) | 7 (11.1) | |
| Sun-protected (others) | 198 (90.0) | 142 (90.4) | 56 (88.9) | |
| Ulceration | 0.091 | |||
| Negative | 138 (62.7) | 93 (59.2) | 45 (71.4) | |
| Positive | 82 (37.3) | 64 (40.8) | 18 (28.6) | |
| Tumor Size | 0.187 | |||
| ≥2 mm | 127 (57.7) | 95 (60.5) | 32 (50.8) | |
| <2 mm | 93 (42.3) | 62 (39.5) | 31 (49.2) | |
| Tumor subtype | <0.001 | |||
| ALM | 89 (40.5) | 66 (42.0) | 23 (36.5) | |
| SSM | 65 (29.5) | 45 (28.7) | 20 (31.7) | |
| LMM | 26 (11.8) | 17 (10.8) | 9 (14.3) | |
| NM | 29 (13.2) | 24 (15.3) | 5 (7.9) | |
| Others | 11 (5.0) | 5 (3.2) | 6 (9.5) | |
| Lymph node metastasis | 0.116 | |||
| Negative | 166 (75.0) | 123 (78.3) | 43 (68.3) | |
| Positive | 54 (25.0) | 34 (21.7) | 20 (31.7) | |
| Distant metastasis | 0.366 | |||
| Absent | 192 (87.3) | 135 (86.0) | 57 (90.5) | |
| Present | 28 (12.7) | 22 (14.0) | 6 (9.5) | |
| Clinical stage | 0.192 | |||
| I/II | 157 (71.4) | 116 (73.9) | 44 (65.1) | |
| III/IV | 63 (28.6) | 41 (26.1) | 22 (34.9) |
SSM, superficial spreading melanoma; LMM, lentigo maligna melanoma; ALM, acrolentigous melanoma; NM, nodular melanoma; PDW, platelet distribution width.