Table 3 Results of the categorical regression analysis for determining a substantial factor of bleb formation.

From: Association of bleb formation with peri-aneurysmal contact in unruptured intracranial aneurysms

Independent variables

Standardized coefficients

Degree of freedom

F-value

p-value

Adjusted R2

Beta

SE

Age (years)

0.101

0.227

1

0.200

0.657

0.517

Sex (0: female/1: male)

0.097

0.118

1

0.669

0.420

Depth (mm)

0.174

0.419

1

0.172

0.681

Aspect ratio

-0.221

0.338

3

0.428

0.734

Volume (mm3)

0.536

0.449

2

1.422

0.256

WSS-p

-0.269

0.250

2

1.158

0.327

NWSS

0.228

0.234

1

0.955

0.336

Contact (0: without/1: with contact)

0.476

0.221

1

4.662

0.038

  1. NWSS, normalized wall shear stress; Contact, perianeurysmal contact; WSS, wall shear stress; WSS-p, WSS at the parent artery.