Table 2. Comparison for the type of flow diverter device used after propensity score matching.
| Variables | Type of flow diverter device | P value | |
|---|---|---|---|
| PED | TED | ||
| 275 (50.0%) | 275 (50.0%) | ||
| Demographic characteristics | |||
| Age (years) | 55.00 (47.00, 62.00) | 55.00 (46.00, 63.00) | 0.556 |
| Gender, female | 197 (71.6) | 202 (73.5) | 0.702 |
| Hypertension | 102 (37.1) | 111 (40.4) | 0.484 |
| Diabetes | 32 (11.6) | 36 (13.1) | 0.588 |
| Hyperlipidemia | 96 (34.9) | 89 (32.4) | 0.588 |
| Coronary disease | 11 (4.0) | 12 (4.4) | >0.999 |
| Ischemic stroke history | 48 (17.5) | 45 (16.4) | 0.820 |
| Smoking status | 23 (8.4) | 23 (8.4) | >0.999 |
| Alcohol abuse | 14 (5.1) | 16 (5.8) | 0.851 |
| Preoperative mRS score >2 | 5 (1.8) | 6 (2.2) | >0.999 |
| Morphological feature | |||
| Location | 0.316 | ||
| Internal carotid artery | 235 (85.5) | 246 (89.5) | |
| Distal circulation | 25 (9.1) | 20 (7.3) | |
| Vertebrobasilar artery | 15 (5.5) | 9 (3.3) | |
| Aneurysm morphology | 0.067 | ||
| Saccular | 245 (89.1) | 258 (93.8) | |
| Non-saccular | 30 (10.9) | 17 (6.2) | |
| Aneurysm size (mm) | 5.20 (3.48, 8.96) | 4.50 (3.17, 7.46) | 0.096 |
| Neck width (mm) | 4.22 (2.97, 6.40) | 4.21 (2.97, 5.68) | 0.559 |
| Parent vessel diameter (mm)† | 3.74 (3.26, 4.20) | 4.02 (3.49, 4.40) | <0.001* |
| Lumen disparities (mm)‡ | 0.59 (0.28, 0.92) | 0.97 (0.49, 1.36) | <0.001* |
| Procedural details | |||
| Adjunctive coiling | 41 (14.9) | 41 (14.9) | >0.999 |
| Overlapping stent technique | 10 (3.6) | 6 (2.2) | 0.447 |
| Immediate occlusion state | 24 (8.7) | 19 (6.9) | 0.525 |
| Device-related challenges | 5 (1.8) | 11 (4.0) | 0.203 |
| Stent re-apposition | 1 (0.4) | 4 (1.5) | 0.373 |
| Poor wall apposition | 2 (0.7) | 5 (1.8) | 0.450 |
| Stent shortening | 1 (0.4) | 1 (0.4) | >0.999 |
| Stent migration | 0 | 1 (0.4) | >0.999 |
| Intraoperative perforation | 1 (0.4) | 0 | >0.999 |
| Perioperative complications | 12 (4.4) | 7 (2.5) | 0.350 |
| Intraoperative rupture | 1 (0.4) | 0 | >0.999 |
| In-stent thrombosis | 4 (1.5) | 3 (1.1) | >0.999 |
| Postoperative SAH | 0 | 0 | – |
| Postoperative ICH | 0 | 1 (0.4) | >0.999 |
| Transient ischemic attack | 6 (2.2) | 0 | 0.030* |
| Mild ischemia | 1 (0.4) | 3 (1.1) | 0.624 |
| Severe ischemia | 0 | 0 | – |
| Angiographic outcomes | |||
| Follow-up duration (months) | 8.00 (6.00, 13.00) | 8.00 (6.00, 15.00) | 0.359 |
| Occlusion status | |||
| Complete occlusion | 225 (81.8) | 207 (75.3) | 0.077 |
| Near-complete occlusion | 13 (4.7) | 32 (11.6) | 0.005 |
| Incomplete occlusion | 37 (13.5) | 36 (13.1) | >0.999 |
| Aneurysm occlusion (complete/near-complete) | 238 (86.5) | 239 (86.9) | >0.999 |
| ISS | 44 (16.0) | 43 (15.6) | >0.999 |
| Symptomatic ISS | 4 (1.5) | 4 (1.5) | >0.999 |
| Clinical outcomes | |||
| Follow-up duration, (months) | 18.00 (15.00, 19.00) | 18.00 (17.00, 19.00) | 0.503 |
| Favorable (mRS score 0–2) | 272 (98.9) | 271 (98.5) | >0.999 |
| Morbidity (mRS score 3–5) | 3 (1.1) | 4 (1.5) | >0.999 |
| Mortality (mRS score 6) | 0 | 0 | – |
| Surgery-related morbidity | 1 (0.4) | 1 (0.4) | >0.999 |
Values are shown as median (IQR) or frequency (%) unless indicated otherwise.
*
Values are shown as median () or frequency (%) unless indicated otherwise; S*”, statistical significance.
†
The mean diameter of the vessel at the proximal and distal ends of the aneurysms.
‡
The absolute value of the difference between the proximal and distal parent diameter.
ICH, intraparenchymal hemorrhage; ISS, in-stent stenosis; mRS, modified Rankin Scale; PED, Pipeline embolization device; SAH, subarachnoid hemorrhage; TED, Tubridge embolization device.