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. 2019 Jul 16;106(10):1319–1326. doi: 10.1002/bjs.11262

Figure 1.

BJS-11262-FIG-0001-c

Calibration plots of the Cox proportional hazards model for the prediction of 5‐year recurrence‐free survival and melanoma‐specific survival a Melanoma‐specific survival and b recurrence‐free survival. a Bootstrap used 200 replications based on observed rate minus predicted rate. Mean absolute error = 0.009, 90th percentile = 0.013. b Bootstrap used 200 replications based on observed rate minus predicted rate. Mean absolute error = 0.009, 90th percentile = 0.014. Error bars denote 95% c.i. of the observed rate.