Fig. 4From: Performance of plasma Aβ42/40, measured using a fully automated immunoassay, across a broad patient population in identifying amyloid statusCorrelation between plasma and CSF Aβ42/40. Scatterplots showing the correlation between plasma and CSF Aβ42/40. r denotes Spearman's rank correlation coefficient. Abbreviations: CSF = cerebrospinal fluid, Aβ42/40 = amyloid β 42/40 ratio, 95%CI = 95% confidence intervalBack to article page