Figure 1. Mean and Individual Trajectories of Cognitive Domains.

Trajectories of cognitive function are based on linear mixed models with random intercept, adjusted for sex, age, education, and hearing and vision capacities. The model on verbal fluency was only adjusted for hearing capacities. Pale lines indicate individual trajectories (raw scores), darker colored lines indicate mean trajectories with time as a continuous variable, and black lines indicate mean trajectories with time as a dummy variable.