Comparison of ANN, LR and Scoring in External Validation, % (N = 2,500).

a<p>Mean±SE,</p>b<p>comparison with ANN model.</p><p>Group 1: all variables.</p><p>Group 3: medical devices as variables (Foley, CVC catheter, arterial line and nasogastric tube).</p><p>Group 5: underlying condition and medications as variables (hemodialysis, stress ulcer prophylaxes and steroids).</p><p>Abbreviations: ANN = artificial neural network, LR = logistic regression, Sens. = sensitivity, Spec. = specificity, AUC = area under the receiver operating characteristic curve.