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Prevalence of hallucinations, as stratified for dementia severity based on MMSE scores (total n = 1227). Error bars indicate lower and upper borders of 95% confidence intervals. MMSE data were missing in 15 subjects, 4 of which reported hallucinations. Distribution was statistically significant (χ2 12.3, P .006, df 3). Abbreviation: MMSE, Mini-Mental State Examination.
