Table 2

 Diagnostic categories on admission to the accident and emergency department

Group 1*Group 2†Group 3‡
COPD, chronic obstructive pulmonary disease.
*Unselected patients.
†Direct admissions from accident and emergency (A&E) department to intensive care unit (ICU).
‡Admissions from A&E to general wards and then ICU.
Trauma24149
Gastrointestinal bleeding213
Overdose152
Neurological catastrophe(ie, cerebrovascular accident and epilepsy)295
Cardiac (acute coronary syndrome,myocardial infarction and left ventricular failure)531
Chest (COPD,asthma and pneumonia)5516
Sepsis of other origin134
Aortic aneurysm111
Others1288
Total534949