Table 1.
Univariate analysis for risk factors of MIOR.
Table 2.
Multivariate analysis for risk factors of MIOR *.
Table 3.
The risk of poor outcome from inexperienced neurosurgeon, MIOR, and a worse preoperative GCS *.
Fig 1.
The impact of surgical experience and MIOR on outcome.
The experienced surgeon without MIOR was set to be the reference group. Inexperienced surgeon encountered a 1.90-fold risk for poor outcome, while MIOR yielded a 3.21-fold risk. The combined risk of inexperience and MIOR for poor outcome was 6.10 times of the reference group. MIOR, major intraoperative rupture; OR, odds ratio.
Fig 2.
The risk of MIOR and associated poor outcome between different surgical experience groups.
The risk of MIOR (total bars) from inexperienced neurosurgeons doubled those from experienced neurovascular surgeons (16% vs 8%, P = 0.009). The risk of poor outcome with MIOR (black bars) was 60% in the inexperienced neurosurgeon group, and 22% in the experienced neurovascular surgeon group (P = 0.013).