Table 1

Prevalence of poststroke dementia: results of the subgroup analysis (all timeframes)

Subgroup (studies, n)All timeframes
Prevalence, % (95% CI), n studiesPrevalence, % (95% CI), n studies
Including prestroke dementia*Excluding prestroke dementia
Study setting
Hospital-based24.0 (20.6 to 27.8), n=1518.2 (10.6 to 29.5), n=24
Population-based11.1 (6.3 to 18.7), n=212.4 (4.9 to 28.2), n=9
P=0.004P=0.458
Stroke type
Recurrent stroke41.7 (31.9 to 52.1), n=431.3 (13.9 to 56.4), n=8
First-ever stroke18.1 (13.3 to 24.0), n=514.4 (8.3 to 24.0), n=19
Mixed population23.8 (20.3 to 27.6), n=1519.7 (10.6 to 33.6), n=14
P=0.000P=0.270
Year of publication
Historical27.1 (23.7 to 30.7), n=1119.1 (8.9 to 36.3),n=10
Contemporary14.4 (11.3 to 18.3), n=615.1 (8.4 to 25.8), n=21
P=0.002P=0.620
Level of income
High25.4 (21.2 to 30.0), n=1112.8 (6.9 to 22.7), n=19
High-middle23.5 (15.3 to 35.4), n=219.8 (7.3 to 43.7), n=7
Low-middle14.9 (9.3 to 22.9), n=325.7 (9.9 to 52.1), n=7
Low10.0 (4.6 to 20.5), n=1No studies
P=0.014P=0.414
  • *The same study can appear in both inclusion and exclusion of prestroke dementia. Inclusion/exclusion prestroke dementia categories are not mutually exclusive.