The relation between size and total complication (ischaemic and haemorrhage complication) (aneurysms number=1322)
| Aneurysm size | Total | PED | PED coils | P value |
| ≤7 mm | 48/436 (11.0) | 27/327 (8.3) | 21/109 (19.3) | 0.0001 |
| ≤15 mm to >7 mm | 49/470 (10.4) | 19/227 (8.4) | 30/243 (12.3) | 0.174 |
| >15 mm | 55/416 (13.2) | 16/129 (12.4) | 39/287 (13.6) | 0.741 |
| >15 mm (saccular) | 40/293 (16.7) | 12/71 (16.9) | 28/222 (12.6) | 0.360 |
| >15 mm (non-saccular) | 15/122 (12.3) | 4/58 (6.9) | 11/64 (17.2) | 0.084 |
Bold values: p value <0.05.
n (%); p value: χ2 test.
PED, Pipeline embolisation device.