The relationship between age and SMC score mediated by right hippocampal volume and moderated by hypertension status. Coefficients of a moderated mediation model with sex, education, hypertension duration, white matter hyperintensities, systolic blood pressure and SRT sum recall as covariates. Lower SMC scores indicate greater memory complaints. *p < .05, **p<. 01, ***p <. 001. SMC = subjective memory complaint.