Table 3 Univariate and multivariate analysis of variables for ONP recovery in patients with unruptured aneurysm (n = 97)

Age (X ± SD)

62.46 ± 11.06

61.06 ± 12.11

0.552

1.011 (0.976–1.046)

Female

35 (76.1%)

44 (86.3%)

0.202

0.506 (0.178–1.441)

Diabetes

3 (6.5%)

3 (5.9%)

0.896

1.116 (0.214–5.826)

Hypertension

27 (58.7%)

28 (54.9%)

0.707

1.167 (0.522–2.616)

Smoking

4 (8.7%)

4 (7.8%)

0.897

1.119 (0.263–4.757)

Alcohol abuse

5 (10.9%)

4 (7.8%)

0.609

1.433 (0.361–5.695)

Preoperative Duration of ONP (≤ 14 days)

36 (78.3%)

26 (51.0%)

0.006

3.462 (1.421–8.430)

0.003

4.463 (1.659–12.009)

Stent assisted

29 (63.0%)

29 (56.9%)

0.536

1.294 (0.572–2.926)

Raymond scale

0.648

1.191 (0.563–2.520)

1

34 (73.9%)

40 (78.4%)

2

10 (21.7%)

9 (17.6%)

3

2 (4.3%)

2 (3.9%)

Aspirin

37 (80.4%)

31 (60.8%)

0.038

2.652 (1.057–6.656)

0.129

2.187 (0.797–6.001)

Mecobalamine

29 (63.0%)

32 (62.7%)

0.976

1.013 (0.444–2.311)

Preoperative degree of Palsy (incomplete)

30 (65.2%)

18 (35.3%)

0.004

3.437 (1.491–7.926)

0.004

4.041 (1.579–10.339)

Dome projection (Posterior-lateral-inferior)

32 (69.6%)

40 (78.4%)

0.321

0.629 (0.251–1.572)

Daughter sac

15 (57.1%)

20 (42.9%)

0.499

0.750 (0.326–1.727)

Maximum size (mm)

6.453 ± 2.457

6.618 ± 2.803

0.756

0.976 (0.838–1.137)

AR (Aspect Ratio)

1.355 ± 0.758

1.386 ± 0.771

0.842

0.948 (0.559–1.606)

SR (Size Ratio)

1.450 ± 0.964

1.813 ± 1.338

0.139

0.757 (0.524–1.094)

0.284

0.799 (0.530–1.204)