. Author manuscript; available in PMC: 2019 Jan 17.

Published in final edited form as: J Alzheimers Dis. 2019;67(1):125–135. doi: 10.3233/JAD-180737

Table 3.

Incidence rates of all-cause dementia and Alzheimer’s dementia per 100 years stratified by the five generated classes.

	N (%)	Person-years	Dementia cases (%)	Incidence-rate per 100 person-years	AD^* cases (%)	Incidence-rate per 100 person-years
Mixed-Domain Impairment	71 (4.3)	219.4	33 (9.5)	15.0	30 (9.1)	13.7
Memory-Specific Impairment	274 (16.5)	1076.0	124 (35.5)	11.5	121 (36.7)	11.2
Frontal Impairment	222 (13.4)	1271.8	47 (13.5)	3.7	43 (13.0)	3.4
Average	767 (46.1)	4993.1	129 (37.1)	2.6	121 (36.7)	2.4
Superior Cognition	328 (19.7)	2431.0	16 (4.6)	0.7	15 (4.5)	0.6

Total	1,662 (100)	9991.3	349 (100)	3.5	330 (100)	3.3

Note. AD = Alzheimer’s Dementia.

includes both possible and probable AD