Figure 1.
The age-related increase of plasma NfL accelerates across the lifespan. The increasing NfL concentrations with age are visualized using a LOESS plot (locally estimated scatterplot smoothing) between ages 5–90. Three data points with concentrations 63.9, 82.6, and 77.7 pg/mL are not shown for visualization purposes, but were included in all statistical analyses in the paper.