With regard to outcomes (Table 1), the incidence of independent survival (mRS 0–2) was similar between clipping and coiling at both 3 (62.6 vs. 67.3 %) and 12 (67.3 vs. 71.4 %) months after SAH. Multivariate logistic regression with poor outcome (1-year mRS 3–6) as a binary outcome demonstrated vasospasm-induced cerebral infarct to be a significant prognostic factor when patient age, gender, admission WFNS grade, Fisher CT group, aneurysm location, dome size, neck size, pretreatment aneurysm rerupture (in hospital, n = 41, 7.6 %), treatment modality, antiplatelet therapy (n = 129, 24.0 %), CSF drainage (with/without irrigation, n = 365, 68.0 %), vasospasm-induced cerebral infarct (n = 95, 17.7 %), shunt-dependent hydrocephalus (n = 101, 18.8 %), epilepsy (n = 26, 4.8 %), infection (sepsis, pneumonia, etc.; n = 48, 8.9 %), noninfectious cardiopulmonary complications (n = 35, 6.5 %), clipping-related complications (n = 84, 15.6 %), and coiling-related complications (n = 52, 9.7 %) were used in the analyses (Table 2).