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The British Journal of Psychiatry (2001) 179: 255-260
© 2001 The Royal College of Psychiatrists

Incidence of dementia according to DSM-III-R and ICD-10

Results of the Leipzig Longitudinal Study of the Aged (LEILA75+), Part 2{dagger}

STEFFI G. RIEDEL-HELLER, MD, MPH

ANJA BUSSE, DPsych, CONNY AURICH, DPsych, HERBERT MATSCHINGER, PhD and MATTHIAS C. ANGERMEYER, MD

Department of Psychiatry, University of Leipzig, Germany

Correspondence: Steffi G. Riedel-Heller, Department of Psychiatry, University of Leipzig, Johannisallee 20, D-04317 Leipzig, Germany. Tel: +49-341-97 24 530; fax: +49-341-97 24 539; e-mail: ries{at}medizin.uni-leipzig.de

Declaration of interest Supported by Interdisziplinaeres Zentrum für Klinische Forschung (IZKF), University of Leipzig (01KS9504, project C7 79934700).

{dagger} See part I, pp. 250–254, this issue.

Background The impact of different case definitions on incidence rates remains unclear.

Aims To compare incidence rates of dementia according to DSM-III-R and ICD-10.

Method A two-wave community study was conducted (n=1692, age 75+ years follow-up period 1.6 years). Cognitive function was assessed by the Structured Interview for Diagnosis of Dementia of Alzheimer Type, Multiinfarct Dementia and Dementia of other Aetiology according to ICD-10 and DSM-III-R (SIDAM).

Results The annual incidence rate for dementia by applying different case definitions was found to be quite similar (DSM-III-R: 47.4 (95% CI=36.1-61.2) per 1000 person-years; ICD-10: 45.8 (95% CI=35.0-59.0) per 1000 person-years). Age-specific incidence rates increase steeply with age.

Conclusions The impact of different case definitions on incidence rates of dementia appears limited if case definitions and case-finding procedures at baseline and follow-up are applied consistently.


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BJP 2001 179: 0. [Full Text]  

Prevalence of dementia according to DSM—III—R and ICD—10: Results of the Leipzig Longitudinal Study of the Aged (LEILA75+) Part 1
STEFFI G. RIEDEL-HELLER, ANJA BUSSE, CONNY AURICH, HERBERT MATSCHINGER, and MATTHIAS C. ANGERMEYER
BJP 2001 179: 250-254. [Abstract] [Full Text]  



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