Baseline characteristics in both patient groups
| Characteristics | Group 1 | Group 2 | P Value |
|---|---|---|---|
| No. of patients | 57 | 76 | |
| Mean age (range) (yr) | 53.3 (SD, 15.2) (21–84) | 54.4 (SD, 12.9) (29–86) | .64 |
| Sex | |||
| Male (%) | 21/57 (36.8%) | 21/76 (27.6%) | .26 |
| Female (%) | 36/57 (63.2%) | 55/76 (72.4%) | |
| WFNS grade | |||
| I–III (%) | 28/57 (49.1%) | 42/76 (55.3%) | .48 |
| IV–V (%) | 29/57 (50.9%) | 34/76 (44.7%) | .41 |
| Mean (95% CI) | 3.1 (2.7–3.6) | 2.9 (2.5–3.2) | |
| Fisher grade | |||
| 1–2 (%) | 7/57 (12.3%) | 8/76 (10.5%) | .75 |
| 3–4 (%) | 50/57 (87.7%) | 68/76 (89.5%) | .97 |
| Mean (95% CI) | 3.4 (3.2–3.6) | 3.4 (3.3–3.6) | |
| Multiple aneurysms | 12/57 (21.1%) | 18/76 (23.7%) | .72 |
| Aneurysm location | |||
| Anterior incl. posterior communicating artery | 46/57 (80.7%) | 64/76 (84.2%) | .59 |
| Posterior | 11/57 (19.3%) | 12/76 (15.8%) | |
| Aneurysm treatment | |||
| Clipping | 34/57 (59.6%) | 44/76 (57.9%) | .84 |
| Coiling | 23/57 (40.4%) | 32/76 (42.1%) |
Note:—incl. indicates including.