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Table 1 Characteristics of the study cohort. Small vessel disease and cerebral amyloid angiopathy scoring were performed on a 4-point scale [26, 30]. Although the cohorts were matched for age, gender and post-mortem interval, there was weak evidence of a between-group difference in age at death. Analyses were therefore carried out both with and without age as a covariate

From: Visual hallucinations in Alzheimer's disease do not seem to be associated with chronic hypoperfusion of to visual processing areas V2 and V3 but may be associated with reduced cholinergic input to these areas

  AD with visual hallucinations, n = 23 AD without visual hallucinations, n = 19 Dementia with Lewy bodies, n = 19 Controls, n = 36 Statistical findings p with age as covariate
Mean SD Mean SD Mean SD Mean SD   
Age (years) 76.7 9.0 79.3 9.0 81.0 7.0 82.1 6.3 ANOVA p = 0.065  
Post-mortem interval (h) 36.7 21.1 41.8 16.3 33.3 18.1 36.9 15.6 ANOVA p = 0.533  
Age at onset of dementia (years) 66.9 10.4 66.4 10.1 73.0 6.9 N/A N/A Kruskal-Wallis p = 0.164, χ2 = 3.611  
Duration of dementia (years) 9.7 4.2 11.1 3.4 7.6 4.6 N/A N/A ANOVA p = 0.04 0.0340
Mean Braak stage 5.5 0.5 5.3 0.9 3.1 1.5 2.0 0.8 χ2 = 109.9, p < 0.001  
Cerebral amyloid angiopathy score
 0 3   3   9   24   χ2 = 31.37, p < 0.001  
 1 7   3   3   3
 2 7   8   2   3
 3 6   4   5   3
Occipital small vessel disease score
 0 2   2   3   8   χ2 = 8.07, p = 0.527  
 1 11   6   5   10
 2 6   3   1   6
 3 0   2   1   1