1. Division of Critical Care Internal Medicine, Department of Emergency Medicine and Critical Care, Changhua Christian Hospital, Changhua 50006, Taiwan
2. Big Data Center, Changhua Christian Hospital, Changhua 50006, Taiwan
3. Graduate Institute of Statistics and Information Science, National Changhua University of Education, Changhua 50006, Taiwan
4. Section of Respiratory Therapy, Department of Emergency Medicine and Critical Care, Changhua Christian Hospital, Changhua 50006, Taiwan