Characteristics of patients
| Characteristic | No IPR | IPR | p Value |
| Total no. of patients | 1355 | 20 | |
| Mean age in years | 60±11.6 | 61±11.6 | 0.67 |
| Female sex | 1054 (78) | 17 (85) | 0.75 |
| Medical history | |||
| Hypertension | 656 (49) | 12 (60) | 0.20 |
| Diabetes mellitus | 73 (5) | 1 (5) | 0.97 |
| Dyslipidemia | 351 (26) | 9 (45) | 0.036 |
| History of SAH | 109 (8) | 1 (5) | 0.74 |
| Multiple aneurysms | 374 (28) | 6 (30) | 0.80 |
| History of smoking | 333 (25) | 4 (20) | 0.53 |
| Family history of UIA or SAH | 186 (14) | 4 (20) | 0.38 |
| Anesthesia | 0.65 | ||
| Local anesthesia | 1297 (96) | 20 (100) | |
| General anesthesia | 58 (4) | 0 (0) |
Boldface type indicates statistical significance. Continuous variables are shown as mean±SD and categorical variables are shown as n (%).
IPR, intraprocedural rupture; UIA, unruptured intracranial aneurysm; SAH, subarachnoid hemorrhage.