TABLE 4.

Demographic and radiological characteristics of the FC-positive and FC-negative groups in AD patients.

		FC-negative AD	FC-positive AD	Z score	p value
n		12	14
Age*		66.08 ± 9.79	74.71 ± 12.32	−2.04	0.044
Gender (M/F)		4:8	7:7		0.46
MMSE*		17.00 ± 5.31	22.71 ± 2.84	−2.51	0.012
Cluster 1	GMV	5,687.31 ± 1,050.03	6,120.13 ± 920.18	−0.93	0.374
	SUVR*	1.40 ± 0.13	1.22 ± 0.95	−3.45	0.0005
Cluster 2	GMV	6,981.53 ± 1,250.72	7,570.47 ± 1,135.87	−1.18	0.237
	SUVR*	1.48 ± 0.13	1.31 ± 0.10	−3.55	0.0009

*Age, MMSE scores, and SUVR in cluster 1 and cluster 2 for FC-negative AD vs. FC-positive AD patients were significantly different based on a two-sample t-test, p < 0.05. Data are means ± SD or numbers of subjects.