Table 3 Predictive factors of snare retrieval failure

BMI (> 30)

1.05(0.46–2.38)

0.901

Filter Dwell Time > 4 years

0.46(0.09–2.34)

0.352

Filter Tilt

2.00(0.44–9.13)

0.370

Angle of Filter Tilt

1.06(0.88–1.27)

0.570

Proximal Hook Embedded in Wall

4.55(1.74–11.88)

0.002

Strut Penetration Outside Wall

56.46(20.21–157.71)

 < 0.001