Table 1 Baseline characteristics of the per-protocol set

Sex ratio (male/female)

20:38

26:40

Mean age (year)

56 (9.89)

55 (9.57)

Aneurysm location

Anterior circulation

57 (98.2%)

65 (98.4%)

Posterior circulation

1 (1.8%)

1 (1.6%)

Aneurysm size (mm)

3.85 (0.60)

3.83 (0.82)

Ruptured aneurysm

12 (20.7%)

19 (28.8%)

Unruptured aneurysm

46 (79.3%)

47 (71.2%)

Packing density (median) (%)

46.2 (35.6–54.3)

45.5 (33.3–60.5)

Total coil length (mm)

18.2 (10.79)

21.3 (9.75)

Assisted device used

None

22 (47.4%)

29 (43.9%)

Balloon, no stent

4 (6.9%)

1 (1.5%)

Stent, no balloon

30 (51.7%)

36 (54.6%)