Table 4.

Correlations (Pearson’s r values) between clinical covariates (and change over 1 year) and the rates of hippocampal atrophy in percent per year

	AD		N	MCI		N	Normal		N
	Left	Right		Left	Right		Left	Right
MMSE	−0.149	0.021	97	0.017	0.023	245	−0.144a	−0.149a	148
Change in MMSE	0.039	0.098	97	0.195b	0.133a	245	−0.184a	−0.022	148
gCDR	−0.077	0.015	97	N.A.	N.A.	245	N.A.	N.A.	148
Change in gCDR	−0.193a	−0.104	97	−0.099	−0.072	245	−0.059	−0.040	148
sobCDR	0.031	0.019	97	−0.006	0.011	245	0.013	0.062	148
Change in sobCDR	−0.093	−0.150	97	−0.131a	−0.112a	245	−0.144a	0.023	147

N.A. (not applicable) is reported for the global CDR in the MCI and AD groups because all MCI and AD patients had the same global CDR values (0.5 and 0 respectively). One normal subject did not have a sum-of-boxes CDR follow-up score, hence the 147 subjects for that one measure.

^ap<0.05.

^bp<0.01.