Document Classification

Section Type: RESULTS

Text: On univariate analysis, younger patients were more often female (54. 7 % versus 40. 9 %, P < 0. 0005), with tumors < 4 mm thick (94. 9 % versus 89. 4 %, P = 0. 001) without ulceration (80. 3 % versus 70. 9 %, P < 0. 0005) or evidence of regression (93. 8 % versus 87. 8 %, P = 0. 003), and were less likely to have lentigo maligna (0. 0 % versus 2. 6 %) or acral lentiginous (0. 4 % versus 3. 1 %, P < 0. 0005) subtype.