Incidence of dementia: preliminary findings from the Nottingham Longitudinal Study of Activity and Ageing.
In a 4-year follow-up of 1,042 randomly sampled elderly people (aged 65+), levels of dementia were assessed using a two-phase case finding procedure (screening followed by clinical interview) among survivors. Clinical information on those not re-interviewed was provided by death certificates, hospital case notes or postal questionnaires. The unweighted 4-year cumulative incidence of dementia was 4.3%, with age-specific rates of 0.9, 2.8, 5.2, 9.0 and 8.7% for the age groups 65-69, 70-74, 75-79, 80-84, and 85-89, respectively.
Morgan
K
K
Department of Health Care of the Elderly, University of Nottingham Medical School, UK.
Lilley
J
J
Arie
T
T
Byrne
J
J
Jones
R
R
Waite
J
J
D000203:Activities of Daily Living / Q000523:psychology; D000368:Aged; D000369:Aged, 80 and over; D003431:Cross-Cultural Comparison; D003430:Cross-Sectional Studies; D003704:Dementia / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D004739:England / Q000453:epidemiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D008137:Longitudinal Studies; D008297:Male; D012307:Risk Factors