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. Author manuscript; available in PMC: 2019 Jan 1.
Published in final edited form as: Neurobiol Aging. 2017 Oct 6;61:207–214. doi: 10.1016/j.neurobiolaging.2017.09.027

Figure 2. Association between cortical Aβ burden (BPND) and cortical gray matter (GM) fraction (A, C) or episodic memory performance (B, D).

Figure 2

Plotted values are partial volume corrected BPND for the mean cortical ROI (A) and unadjusted cortical gray matter fraction (regression coefficient = −0.046, p = 0.017) or (B) episodic memory performance (regression coefficient = −0.317, p = 0.558). Gray matter masked BPND without partial volume correction for the mean cortical ROI (C) and unadjusted cortical gray matter fraction (regression coefficient = −0.046, p = 0.048) or (D) episodic memory performance (regression coefficient = 0.1271, p = 0.846) are also shown. Episodic memory performance is the average of z-scores for CVLT free delayed recall and Logical Memory II. The figure displays unadjusted linear regression lines with their 95% confidence intervals. Statistical analysis was performed using general linear models adjusted for age and sex.