Table 2

Causes of coma

No% (95% CI)
Structural 46 40 (31 to 49)
    Brain haemorrhage2017.4
    Subarachnoid haemorrhage97.8
    Brain infarction54.3
    Subdural haematoma43.5
    Epidural haematoma32.6
    Brain contusion21.7
    Brain tumour10.9
    Venous thrombosis10.9
    Central pontine myelinolysis10.9
Metabolic 69 60 (51 to 69)
    Drug overdose2622.6
    Alcohol97.8
    Hypoglycaemia54.3
    Sepsis54.3
    Pneumonia54.3
    Congestive heart failure32.6
    Hypoxia21.7
    Carbon dioxide narcosis21.7
    Hepatic coma21.7
    Seizure21.7
    Uraemia21.7
    Hyponatraemia10.9
    Diabetic ketoacidosis10.9
    Asthma10.9
    Heat stroke10.9
    Unknown21.7