Table 4.
Outcome Parameters, with p-values for comparing the external set to the internal set; GOS = Glasgow outcome scale, mRS = modified Rankin Scale, preop = preoperative, postop = postoperative; *no prediction models were made for this outcome parameter.
| Outcome parameters | Internal Set | Train Set | Test Set | External Set | p-value |
|---|---|---|---|---|---|
| New neurological deficit | 64 (13.7%) | 52 (13.7%) | 12 (14.0%) | ||
| Transient | 35 (7.4%) | 29 (7.6%) | 6 (7.0%) | ||
| Permanent | 29 (6.3%) | 23 (6.1%) | 6 (7.0%) | ||
| mRS > 2 | 59 (12.8%) | 51 (13.4%) | 8 (9.3%) | 11 (4.3%) | < 0.0001 |
| mRS difference > 1 (preop vs. postop.) | 48 (10.2%) | 40 (10.5%) | 8 (9.3%) | 9 (3.5%) | 0.0004 |
| GOS < 5 | 63 (13.6%) | 51 (13.4%) | 12 (14.0%) | 19 (7.4%) | 0.0043 |
| Complete angiographical occlusion* | 459 (98.5%) | 373 (98.2%) | 86 (100.0%) | 248 (96.9%) | 0.1445 |