Table 4: Surgical margins (trials).

Trial, year	No. of subjects	Resection margins	Breslow thickness, mm	Overall survival narrow, wide	Local recurrence rate narrow, wide
French. Multicentric, Trial 1993	319	2-5	< 2	87%, 86%	13.6%, 20%
Intergroup Melanoma Trial, 1996	470	2–4	1–4	70%, 77%	2.1%, 2.6%
Swedish MSG Trial, 2000	989	2–5	0, 8–2	79%, 76%	0.6%, 2.4%
WHO Melanoma Trial 10, 1991	612	1–3	< 2	96.4%, 96.4%	0.98%, 0.97%
UK Melanoma Study Group, 2004	900	1–3	> 2	32.2%, 30.9%	8.27%, 5.64%