Table 4.

Spearman's correlation coefficients between age, education, and different diagnostic tools for cognitive impairment.

	Age	Education	CDR-SB	MoCA	CASI	NPI	CI stages
Age	1.00
Education	−0.49**	1.00
CDR-SB	0.43**	−0.34**	1.00
MoCA	−0.59**	0.62**	−0.69**	1.00
CASI	−0.58**	0.54**	−0.71**	0.97**	1.00
NPI	0.04*	−0.08**	0.35**	−0.15**	−0.15**	1.00
CI stages	0.38**	−0.31**	0.83**	−0.66**	−0.64**	0.30**	1.00

CDR-SB, sum of boxes of the Clinical Dementia Rating Scale; MoCA, Montreal Cognitive Assessment; CASI, Cognitive Abilities Screening Instrument; NPI, Neuropsychiatric Inventory; CI stages, cognitive impairment stages grouped using the CDR-SB in all participants.

^* p < 0.01;

^**p < 0.001.