Table 5.

Association of clusters with variables included in the cluster analysis.

	Cluster I (RMCI)	Cluster II (RSCI)
	Z score		Z score
	Mean	SD	Mean	SD	F	p -values
Attention/working memory	0.49	0.90	−0.59	0.54	20.84	<0.001*
Executive function	0.10	0.60	−0.12	0.71	1.16	0.288
Language	0.56	0.62	−0.67	0.61	41.37	<0.001*
Memory	0.48	0.64	−0.58	0.66	27.89	<0.001*
Visuospatial function	0.31	0.60	−0.38	0.94	8.35	0.006*

RMCI, relatively mild cognitive impairment; RSCI, relatively severe cognitive impairment; SD, standard deviations.

^*Significant difference.