Table 2. Baseline characteristics of participants in relation to Breslow thickness, Clark level and mitotic activity.

Characteristics	Frequency n (%)	Breslow thickness (≥0.75 mm) n (%)	Clark level (Levels 2–5) n (%)	Mitotic activity (present) n (%)
Sex
Male	56 (56)	8 (14)	29 (52)	15 (27)
Female	44 (44)	9 (20)	26 (59)	8 (18)
p-value		0.42	0.47	0.31
Age
<60 years	40 (40)	9 (23)	23 (58)	10 (25)
≥60 years	60 (60)	8 (13)	32 (53)	13 (22)
p-value		0.23	0.68	0.70
BMI
<25.0	34 (35)	3 (9)	17 (50)	3 (9)
25–29.9	36 (37)	7 (19)	20 (56)	11 (31)
30+	27 (28)	6 (22)	16 (59)	8 (30)
p for trend		0.33	0.79	0.05
ITA skin type
Intermediate/medium	8 (8)	0 (0)	3 (38)	0 (0)
Light/fair	70 (72)	9 (13)	37 (53)	13 (19)
Very light/very fair	20 (20)	7 (35)	14 (70)	9 (45)
p for trend		0.03	0.24	0.02
Reported UVR exposure
Low	18 (19)	2 (11)	9 (50)	4 (22)
Medium	38 (41)	8 (21)	21 (55)	6 (16)
High	37 (40)	5 (14)	20 (54)	10 (27)
p for trend		0.62	0.93	0.52
Naevi burden at diagnosis
0–9	25 (25)	3 (12)	15 (60)	5 (60)
10–39	45 (46)	8 (18)	21 (47)	12 (27)
40+	28 (29)	5 (18)	18 (64)	5 (18)
p for trend		0.83	0.30	0.68
Solar elastosis a
Present	34 (71)	6 (18)	20 (59)	10 (29)
Absent	14 (29)	2 (14)	8 (57)	3 (21)
p-value		0.57	0.92	0.73
Childhood sunburns
0–5	40 (40)	6 (15)	21 (53)	7 (18)
6–20	44 (45)	7 (15)	27 (61)	12 (27)
> 20	15 (15)	3 (20)	6 (40)	3 (20)
p for trend		0.87	0.34	0.58
Skin checks in last 3 years
3 or more	46 (47)	5 (11)	20 (44)	10 (22)
1 or 2	28 (28)	6 (21)	16 (57)	7 (25)
Nil	25 (25)	5 (20)	18 (72)	5 (20)
p for trend		0.41	0.07	0.90

UVR: ultraviolet radiation.

^aHistopathology reporting for solar elastosis available for n = 48 melanomas