Fig. 3
From: Outcome of early stage Merkel carcinoma treated by exclusive radiation: a study of 53 patients
Cumulative incidence of local relapse according to treatment group. There was no statistical difference, in the unadjusted (sHR, 2.24, 95% CI 0.79–6.32) and adjusted model (sHR = 1.47 CI 95% 0.31–7.07), between the local relapse rates in the two groups using Fine-Gray models models. The rates of overall survival were estimated using the approach of Kalbfleisch and Prentice