Abbreviations: (ANN) artificial neural network, (AR) autoregressive, (ARMA) autoregressive moving average, (ARX) autoregressive with external input, (cARN) autoregressive with an output correction module/recurrent neural network, (cARX) autoregressive with an output correction module, (CC) correlation coefficient, (CGM) continuous glucose monitor, (CHO) carbohydrate, (EWS) early warning system, (HbA1c) glycosylated hemoglobin, (MDII) multiple daily insulin injection, (PH) prediction horizon, (RMSE) root mean square error, (RNN) recurrent neural network, (SAP) sensor-augmented pump, (T1DM) type 1 diabetes mellitus, (TL) time lag