Table 1 Patient and aneurysm characteristics of training and test sets. WFNS = World Federation of Neurosurgical Societies. SD = standard deviation.
Characteristic | Training set (n = 68) | Test set (n = 185) | P value |
|---|---|---|---|
Patient age (years; mean ± SD) | 53.0 ± 12.8 | 55.1 ± 13.8 | .31 |
Gender | .75 | ||
Female | 47 (69.1%) | 124 (67%) | |
Male | 21 (30.9%) | 61 (33%) | |
WFNS grade | .46 | ||
1 | 21 (30.9%) | 54 (29.2%) | |
2 | 12 (17.6%) | 23 (12.4%) | |
3 | 6 (8.8%) | 27 (14.6%) | |
4 | 6 (8.8%) | 26 (14.1%) | |
5 | 23 (33.8%) | 55 (29.7%) | |
Fisher grade | .18 | ||
1 | 2 (2.9%) | 0 (0%) | |
2 | 3 (4.4%) | 13 (7%) | |
3 | 24 (35.3%) | 83 (44.9%) | |
4 | 39 (57.4%) | 89 (48.1%) | |
Aneurysm volume (mm3; mean ± SD) | 187.1 ± 296.3 | 145.6 ± 223.5 | .26 |
Aneurysm location | .64 | ||
Internal carotid artery | 20 (25.3%) | 46 (21.4%) | |
Anterior cerebral artery | 24 (30.4%) | 80 (37.2%) | |
Middle cerebral artery | 24 (30.4%) | 66 (30.7%) | |
Posterior circulation | 11 (13.9%) | 23 (10.7%) |
