Fig. 2

Adjusted associations between Plasma NfL and Impulsivity. Partial regression plots with results from the entire cohort and age-stratified cohorts of former American football players, adjusted for covariates: age, BMI, race, total AUDIT score, APOE-ε4 carrier, revised Framingham Stroke Risk Profile score, and sleep apnea. Regression results were: β: 0.126, 95% CI: − 0.048–0.300, FDR-p: 0.260 (entire cohort), β: − 0.138, 95% CI: − 0.359–0.082, FDR-p: 0.360 (age < 60), β: 0.488, 95% CI: 0.254–0.723, FDR-p: 0.001 (age ≥ 60)