Figure 4. Structural Equation Model Exploring Associations Among Age, Modifiable Risk Factors for Dementia (MRFD), Posterior Cingulate Cortex Volume, and Spatial Memory.

Standardized correlation coefficients are shown. Solid lines indicate associations that were statistically significant; dashed line indicates no statistically significant association. The model had a χ² of 0.000, root mean square error of approximation less than 0.001, Akaike information criterion of 103857.9, comparative fit index of 1.000, and Tucker-Lewis index of 1.000.