Primary tumour excision with a surrounding margin of 1 cm v 3 cm in high risk malignant melanoma at a median follow up of 60 months*
| Outcomes | 1 cm margin | 3 cm margin | RRI (95% CI) | NNH (CI) |
|---|---|---|---|---|
| *Composite outcome = tumour recurrence or all cause mortality. Other abbreviations defined in glossary; event rates, RRI, NNH, and CI calculated from data in article. | ||||
| †Borderline significance (p = 0.05). | ||||
| Local, in transit, or nodal tumour recurrence | 38% | 32% | 20% (0 to 43) | 16 (8 to ∞)† |
| All cause mortality | 32% | 31% | 6% (−13 to 28) | Not significant |
| Composite outcome | 49% | 44% | 15% (−1 to 30) | Not significant |
