ATF3 and hematoma: With the addition of the above‐mentioned six factors into the multivariate linear model, NIHSS scores (β = 4.783; 95% CI: 2.604–6.962; VIF = 3.020; p = 0.001) and hematoma volume (β = 1.967; 95% CI = 0.571–3.363; VIF = 3.115; p = 0.006) were independently correlated with admission serum ATF3 levels of all patients.