Image feature distributions utilised in nine independent random survival forest analyses.

1DAPI: Nuclear DAPI (totals and means) in all cells.2CD99-DAPI: Nuclear DAPI in CD99- cells.3CD99+DAPI: Nuclear DAPI in CD99+ cells.4Ki67: Ki67 nuclear: cytoplasm ratios (totals and means) in all cells.5CD99-Ki67: Ki67 in CD99- cells.6CD99+Ki67: Ki67 in CD99+ cells7, 8, 9CD99+ Multiple markers in CD99+ and CD99- cells.N: number of patients. Some patients did not have a full set of labelled images, so the number of samples used for each RSF varies depending on the combination of markers used. One patient did not have any cells labelled with Ki67. All features: the out-of-bag error rate calculated on a classifier containing all features from the indicated marker distributions. Variable hunting: the internal test set error rate using a RSF trained using variable hunting feature selection, and are the mean and standard deviations of the error rates are shown.VH Rand-CV: the mean and the standard deviation of the cross-validation error rate using a RSF trained using variable hunting feature selection, with 50 rounds of two-thirds train: one-third test sets.Image feature distributions utilised in nine independent random survival forest analyses.