Demographic details, clinical grade of patients and site of aneurysm in the different timing to surgery groups
| Time to surgery (day after ictus) (day of SAH=day 0) | |||
|---|---|---|---|
| 1–3 | 4–10 | 11–21 | |
| No of patients (% age of total n=550) | 331 (60.2) | 178 (32.4) | 41 (7.5) |
| Mean age (range) | 51.6 (15–80) | 55.1 (24–84) | 56.2 (32–77) |
| Sex (% female) | 63.7 | 72.8 | 60 |
| % poor grade (WFNS 4/5) | 10.2 | 10.2 | 10 |
| Site of aneurysm (% total in group) | |||
| Anterior cerebral artery | 42.6 | 38.4 | 32 |
| Post communicating artery | 24.7 | 22.7 | 40 |
| Middle cerebral artery | 23.1 | 29.1 | 15 |
| Internal carotid artery | 6.5 | 8.1 | 10 |
| Pericallosal artery | 3.1 | 1.7 | 2 |
| Favourable outcome at 6 months (%) | 83.2 | 80.5 | 84.0 |