PREVALENCE OF DEMENTIA OVER AGE 100

All nine persons aged 100 or older in a Dutch town with some 100,000 i nhabitants were examined by means of cognitive tests, informant questi onnaires, and clinical interviews. Formal testing was difficult in mos t subjects because of visual, auditory, and motor handicaps. By combin ing the results of cognitive tests and clinical examinations, a diagno sis of moderate to severe dementia could be made in eight subjects. On e subject was not examined but by informant questionnaire was found to be mildly demented.