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Regions with significant main effect of age. The color bar represents the magnitude of the regression coefficient. LMEINT+SLP compared to the other methods detected fewer regions showing significant age effect. Cooler colors represent stronger age-related declines in cortical thickness. LMEINT, LME models site-specific random intercept. LMEINT+SLP, LME models both site-specific random intercepts and age-related random slopes.
