Utility of AD8 for Cognitive Impairment in a Chinese Physical Examination Population: A Preliminary Study

Table 4

AD8 subitems in dementia and nondementia subjects.

AD8 subitems	Dementia; (AD8 ≥ 2)	Nondementia; (AD8 < 2)	value^*	Total
Mean age	82.8 ± 8.5	73.9 ± 10.4	<0.001	75.4 ± 10.6
AD8-1	82, 31.5%	5, 0.4%	<0.001	87, 5.6%
AD8-2	110, 42.3%	32, 2.5%	<0.001	142, 9.2%
AD8-3	86, 33.1%	16, 1.2%	<0.001	102, 6.6%
AD8-4	108, 41.5%	34, 2.6%	<0.001	142, 9.2%
AD8-5	70, 26.9%	4, 0.3%	<0.001	74, 4.8%
AD8-6	67, 25.8%	2, 0.2%	<0.001	69, 4.5%
AD8-7	123, 47.3%	15, 1.2%	<0.001	138, 8.9%
AD8-8	216, 83.1%	156, 12.1%	<0.001	372, 24.1%
Mean AD8 score	3.3 ± 1.7	0.2 ± 0.4	<0.001	0.73 ± 1.39

AD8-1: problems with judgment; AD8-2: reduced interest in hobbies/activities; AD8-3: repeats questions, stories, or statements; AD8-4: trouble learning how to use a tool, appliance, or gadget; AD8-5: forgetting correct month or year; AD8-6: difficulty handling complicated financial affairs; AD8-7: difficulty remembering appointments; AD8-8: consistent problems with thinking and/or memory.
^*The value was calculated by comparing the prevalence of endorsement of each item in AD8 between suspected demented and nondemented participants.