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

Table 5

The prevalence of dementia in every age group.

Age groups	Dementia (AD8 ≥ 2)	Nondementia (AD8 < 2)
<50	0, 0.0%	30, 100%
50–59	2, 3.0%	64, 97.0%
60–64	9, 4.5%	189, 95.5%
65–69	12, 6.5%	173, 93.5%
70–74	20, 7.6%	244, 92.4%
75–79	24, 13.4%	155, 86.6%
80–84	50, 23.0%	167, 77.0%
85–89	96, 33.6%	190, 66.4%
≥90	47, 39.5%	72, 60.5%
Mean age	82.8 ± 8.5	73.9 ± 10.4