Table 3.

Odds ratios and CI for the risk of residual melanoma at WLE

	Univariate model		Multivariate model
	OR	95% CI	OR	95% CI
Time from diagnosis to wide local excision (+1 day)	1	1–1
Sex (male vs. female)	0.98	0.42–2.28	0.14	0.02–0.85
Age at diagnosis (+1 year)	1.06	1.02–1.1	1.02	0.96–1.09
Type of melanoma
In situ vs. surface diffusion	6.7	1.2–37.6
In situ vs. epithelioid	0.47	0.12–1.78
In situ vs. nodular	0.92	0.26–3.18
In situ vs. lentigo maligna	0.69	0.41–3.31
Superficial spreading vs. epithelioid	0.07	0.01–0.36
Superficial spreading vs. nodular	0.14	0.28–0.66
Superficial spreading vs. lentigo maligna	0.1	0.02–0.65
Epithelioid vs. nodular	1.95	0.64–6
Epithelioid vs. lentigo maligna	1.47	0.34–6.41
Nodular vs. lentigo maligna	0.75	0.19–3.03
WLE length (+1 cm)	1.04	0.85–1.27
WLE width (+1 cm)	1.5	1.02–2.2
WLE thickness (+1 cm)	2.01	1.11–3.65
Breslow thickness (+1 mm)	1.36	1.15–1.61	1.41	1.06–1.88
Intratumoral infiltrate (Yes vs. No)	0.92	0.23–3.67
Peritumoral infiltrate (Yes vs. No)	0.39	0.1–1.56
Ulcerations (Yes vs. No)	18.86	2.35–151.7
Site of melanoma
Head-neck vs. limbs	4.2	1.41–12.47
Head-neck vs. torso	8.17	2.57–25.94
Head-neck vs. other	4.67	0.53–40.89
Limbs vs. torso	1.94	0.66–5.72
Limbs vs. other	1.11	0.13–9.36
Torso vs. other	0.57	0.06–4.98

CI, confidence interval; OR, odds ratio; WLE, wide local excision.