Figure. Multivariable-adjusted OR (95% CI) of ischemic stroke by quartiles of B2M.

Model 1: conditional on matching factors (age, race/ethnicity, menopausal status, hormone use, smoking, and date of sample collection). Model 2: model 1 plus physical activity (continuous), body mass index (continuous), aspirin use (none vs ≥1 tablets per week), alcohol consumption (continuous), history of diabetes mellitus, history of high blood pressure, history of coronary heart disease or revascularization, and log-transformed cholesterol ratio. Model 3: model 2 plus eGFR (continuous). B2M = β₂-microglobulin; CI = confidence interval; eGFR = estimated glomerular filtration rate; OR = odds ratio.