ATF3 and hematoma: Through incorporating these significantly distinct parameters into the multifactorial model, admission serum ATF3 levels (OR = 1.010; 95% CI = 1.002–1.017; VIF = 3.211; p = 0.038), NIHSS scores (OR = 1.148; 95% CI = 1.008–1.307; VIF = 3.008; p = 0.012), and hematoma volumes (OR = 1.116; 95% CI = 1.068–1.166; VIF = 2.155; p = 0.019) appeared as the three independent predictors of SAP among all patients.