Table 5.

Subgroup comparison of the CSIT score stratified by age and educational levels.

Subgroups	NC	MCI	AD	Statistics	P
Age
50–60 years	14.63 ± 1.54	13.46 ± 1.77	13.50 ± 1.79	10.040	<0.001
60–70 years	14.69 ± 1.33	12.80 ± 2.21	11.32 ± 2.96	21.935	<0.001
>70 years	14.58 ± 1.62	12.69 ± 2.20	8.22 ± 3.19	20.501	<0.001
Statistics	0.001	4.196	12.486
P	1.000	0.123	0.002
Education
≤6 years (n = 50)	14.50 ± 1.41	12.36 ± 2.28	9.86 ± 3.76	10.905	0.004
6–9 years (n = 111)	14.03 ± 1.96	12.69 ± 2.09	11.00 ± 2.78	16.247	<0.001
9–12 years (n = 121)	14.68 ± 0.99	13.37 ± 1.84	14.22 ± 1.56	14.866	0.001
>12 years (n = 84)	15.04 ± 1.46	13.75 ± 1.90	12.00 ± 1.73	19.529	<0.001
Statistics	8.678	11.091	10.407
P	0.034	0.011	0.015