Table 1.

Demographic data on study population (no. of subjects in subgroups)

SubgroupsDemented individualsNondemented individuals
AutopsiedNot autopsiedAutopsiedNot autopsied
* Proportion of demented autopsied subjects who died younger than 90 years of age was lower (p = 0.005) than in the older age group.
† Proportion of nondemented autopsied subjects who died younger than 90 years of age was higher (p = 0.004) than in the older age group.
‡ Proportion of autopsied demented men was lower (p = 0.038) than the proportion of nonautopsied demented men.
VaD = vascular dementia.
All deceased individuals, n1188062139
Age group in 1991, n
<90 y785946111
≥90 y40211628
Age group at death, n
<90 y33*383140
≥90 y85*423199
Males, n (%)17 (14)21 (26)10 (16)34 (20)
APOE ε4 carriers, n (%)53 (45)32 (40)12 (19)28 (20)
Clinical diagnosis, n (%)
AD51 (43)33 (41)
VaD57 (48)44 (55)
Other10 (8)3 (4)