Fig. 4

Averaged precision-recall-curves (PRC) of the validation set for the prediction (A) and exclusion of non-invasive ventilation (B) of non-invasive ventilation for preoxygenation of the Bayes network, REPTree, multilayer perceptron and Random Forest (B). Caption: Area under the curve (AUC) from the respective algorithm, 95% confidence interval in parenthesis, REPTree = reduced error pruning tree, MLP = multilayer perceptron, *p-value for comparison of Bayes network (A) or rather (B) Random Forest versus all other algorithms