Characteristics before and after propensity score matching of aneurysms followed via imaging (≥6 months)
| Variable | Total population | Propensity score | |||||
| Total (n=667) | AcoA group (n=408) | PcoA group (n=259) | P value | AcoA group (n=230) | PcoA group (n=230) | P value | |
| Age (years) (mean±SD) | 59.8±9.9 | 59.2±9.8 | 60.6±10.2 | 0.07 | 60.9±9.0 | 60.2±10.2 | 0.45 |
| Women (n (%)) | 442 (66.3) | 223 (54.7) | 219 (84.6) | <0.01 | 188 (81.7) | 190 (82.6) | 0.81 |
| Maximal aneurysm size (mm) (mean±SD) | 5.3±2.5 | 5.1±2.2 | 5.7±2.8 | <0.01 | 5.3±2.4 | 5.4±2.4 | 0.92 |
| Neck size (mm) (mean±SD) | 3.4±1.5 | 3.3±1.4 | 3.6±1.6 | <0.01 | 3.4±1.5 | 3.4±1.4 | 0.85 |
| Depth to neck ratio (mean±SD) | 1.3±0.6 | 1.3±0.5 | 1.4±0.6 | <0.01 | 1.4±0.6 | 1.4±0.6 | 0.91 |
| SAH presentation (n (%)) | 79 (11.8) | 52 (12.7) | 27 (10.4) | 0.37 | 30 (13.0) | 26 (11.3) | 0.57 |
| Retreatment (n (%)) | 82 (12.3) | 40 (9.8) | 42 (16.2) | 0.014 | 25 (10.9) | 33 (14.3) | 0.26 |
| Hypertension (n (%)) | 361 (54.1) | 219 (53.7) | 142 (54.8) | 0.77 | 126 (54.8) | 125 (54.3) | 0.93 |
| Diabetes mellitus (n (%)) | 85 (12.7) | 56 (13.7) | 29 (11.2) | 0.34 | 30 (13.0) | 25 (10.9) | 0.47 |
| Hyperlipidemia (n (%)) | 291 (43.6) | 166 (40.7) | 125 (48.3) | 0.05 | 109 (47.4) | 106 (46.1) | 0.78 |
| Smoking (n (%)) | 98 (14.7) | 64 (15.7) | 34 (13.1) | 0.36 | 27 (11.7) | 28 (12.2) | 0.89 |
| Stent assisted (n (%)) | 200 (30.0) | 123 (30.1) | 77 (29.7) | 0.93 | 65 (28.3) | 65 (28.3) | 1.00 |
| Successful occlusion (n (%)) | 469 (70.3) | 278 (68.1) | 193 (74.5) | 0.12 | 162 (70.4) | 167 (72.6) | 0.61 |
| Recanalization (n (%)) | 111 (16.6) | 45 (11.0) | 66 (25.5) | <0.01 | 28 (12.2) | 53 (23.0) | <0.01 |
AcoA, anterior communicating artery; PcoA, posterior communicating artery; SAH, subarachnoid hemorrhage.