Table 4.

Forecast accuracy measures for the single and hybrid models (patients hospitalized in the ICU)

Models	MAE	MAPE	MASE	RMSE	ACF1
ARIMA	12.5828	3.5411	0.0495	21.1697	0.0375
ETS	13.3832	3.59	0.0527	22.8157	0.0181
NNAR	11.6316	2.8082	0.0458	19.2895	− 0.1636
TBATS	14.226	3.5832	0.056	24.2076	0.3122
A–E	12.5388	3.47	0.0493	21.5479	0.0072
A–N	11.4917	3.0443	0.0452	18.7476	− 0.0513
A–T	12.8579	3.4874	0.0506	21.953	0.159
E–N	11.9035	3.064	0.0468	19.5496	− 0.0947
E–T	13.3764	3.5436	0.0526	22.9583	0.1504
N–T	11.9856	2.9767	0.0472	19.695	0.0627
A–E–N	11.8861	3.0595	0.0468	19.8477	− 0.0521
A–E–T	12.4876	3.3605	0.0491	21.3983	0.1502
A–N–T	12.0046	3.009	0.0472	19.9841	0.0474
E–N–T	12.383	3.0362	0.0487	20.7628	0.0377
A–E–N–T	12.188	3.0256	0.048	20.538	0.0277

Notes: A ARIMA, E ETS, N NNAR, T TBATS. Hybrid models were combined using equal weights