Figure 1a.

Model examining the association between race and neurocognitive function (NIH TB Fluid Composite TS), and whether health literacy might account for this association after adjusting for reading level, stroke severity and insurance type. The c coefficient represents the total relationship between race and neurocognitive function (not controlling for health literacy, insurance type or significant covariates). The c’ coefficient represents the strength of the association between race and neurocognitive function after controlling for the proposed intermediate factor (health literacy), significant covariates (reading level and stroke severity), and insurance type. The Coefficient for the direct effect (c’), was estimated directly from the models (Preacher & Hayes). The a and b paths represent the indirect path involving health literacy. The a path shows the coefficient for the association of race to health literacy based on a linear regression model adjusting for reading level, stroke severity and insurance type. The b path shows the coefficient for the association of health literacy to neurocognitive function when included in a multivariable regression model along with other variables.

*p < .01, **p < .001.