Table 2:

Multivariate logistic regression analysis and stepwise selection of associated factors for major re-recanalization

ParameterOR (95% CI)P Value
A: Variables with P < .05 or previously reported as associated factors for recanalization
 Hypertension1.62 (0.79–3.33).19
 Thrombosed aneurysm1.45 (0.29–7.27).65
 Posterior circulation aneurysm1.13 (0.44–2.94).80
 Aneurysm size at first coiling, mm1.00 (0.75–1.34).98
 Neck size at first coiling, mm1.20 (0.86–1.68).28
 Aspect ratio at first coiling1.27 (0.44–3.69).66
 Aneurysm volume at first coiling, mm31.00 (0.99–1.00).92
 Ruptured status at second coiling2.70 (0.36–20.20).33
 Balloon-assisted coiling at second coiling0.76 (0.22–2.66).67
 Stent-assisted coiling at second coiling0.41 (0.17–1.02).06
 Use of IMC at second coiling0.43 (0.17–1.11).08
 Bioactive coila1.25 (0.56–2.79).59
 Large coilb0.90 (0.25–3.28).87
 Hydrogel coilc2.35 × 10−7 (0 – Inf).99
 RROC class 1 at second coiling0.15 (0.029–0.79).03d
B: After stepwise selection by using the P value (until P < .05)
 Neck size at first coiling, mm1.18 (1.04–1.33).008d
 Stent-assisted coiling at second coiling0.34 (0.15–0.79).01d
 Use of IMC at second coiling0.35 (0.16–0.80).01d
 RROC class 1 at second coiling0.16 (0.033–0.70).02d

  • Note:—Inf indicates infinitesimal.

  • ↵a Bioactive coils are all the Matrix2 (Stryker Neurovascular).

  • ↵b Large coils with a primary diameter of 0.014 inches or larger are all the Target XL (Stryker Neurovascular).

  • ↵c Hydrogel coils are all part of the HydroCoil Embolic System (MicroVention Terumo).

  • ↵d P < .05.