Table 1.

Clinical and Epidemiological Features, by Tumor Thickness

Feature	Melanoma in situ (n = 52)	Melanoma <0.8 mm (n = 98)	Melanoma ≥0.8 mm (n = 95)	P
Mean age, y	59.13	57.55	59.19	NS
≥65 y, n (%)	23 (44.2)	43 (43.9)	43 (45.3)	NS
Male:Female, n (%)	24:28 (46.2:53.8)	46:52 (46.9:53.1)	51:44 (53.7:46.3)	NS
Palpability, n (%)	0 (0)	46 (46.9)	86 (90.5)	.001
Tumor diameter ≥10 mm, n (%)	25 (48.1)	49 (50.0)	70 (73.6)	.001
Tumor location, n (%)				NS
Chronic exposure	5 (9.6)	7 (7.1)	2 (2.1)
Intermittent exposure	45 (86.5)	89 (90.8)	91 (95.8)
Non-exposed areas
	2 (3.8)	2 (2.0)	2 (2.1)

NS = Not significant.