IL6 and aneurysm: Serum IL-6 levels were significantly associated with DIND at all days except at day 1 (OR = 6.3, p = 0.01, 95% CI = 1.5–26.0 at day 3; OR = 4.6, p = 0.04, 95% CI = 1.1–20.2 at day 5; OR = 9.4, p = 0.01, 95% CI = 1.7–52.7 at day 7; OR = 13.1, p = 0.005, 95% CI = 2.2–79.4 at day 9; OR = 30.5, p = 0.01, 95% CI = 2.6–356.7 at day 11; OR = 7.8, p = 0.01, 95% CI = 1.5–40.0 at day 13) even after controlling for age, gender, H&H score, Fischer score, IVH, ICB, aneurysm location, and treatment (see also supplementary Table S1).