Table 1 Aetiology of the spontaneous subarachnoid haemorrhages in patients calling the Emergency Medical Dispatch Center
Haemorrhage type | n | % | 95% CI |
|---|---|---|---|
Aneurysmal | 209 | 70.4 | 64.8–75.5 |
No haemorrhage site identified | 51 | 17.1 | 12.9–21.8 |
Perimesencephalic haemorrhage | 24 | 8.0 | 5.2–11.7 |
Arterial dissection | 7 | 2.3 | 0.9–4.8 |
Arterio-venous malformation | 6 | 2.0 | 0.7–4.3 |
Missing | 2 | 0.7 | 0.1–2.4 |