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MAINZ//2011: 56. GMDS-Jahrestagung und 6. DGEpi-Jahrestagung

Deutsche Gesellschaft für Medizinische Informatik, Biometrie und Epidemiologie e. V.
Deutsche Gesellschaft für Epidemiologie e. V.

26. - 29.09.2011 in Mainz

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Clock Drawing Test: Screening utility for Mild Cognitive Impairment according to different scoring systems – Results of the Leipzig Longitudinal Study of the Aged (LEILA 75+)

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  • Lena Ehreke - University of Leipzig; Institute of Social Medicine, Occupational Health and Public Health; Public Health Research Unit, Leipzig
  • Tobias Luck - University of Leipzig; Institute of Social Medicine, Occupational Health and Public Health; Public Health Research Unit, Leipzig
  • Melanie Luppa - University of Leipzig; Institute of Social Medicine, Occupational Health and Public Health; Public Health Research Unit, Leipzig
  • Hans-Helmut König - University Medical Center Hamburg-Eppendorf, Department of Medical Sociology and Health Economics, Hamburg
  • Steffi G. Riedel-Heller - University of Leipzig; Institute of Social Medicine, Occupational Health and Public Health, Leipzig

Mainz//2011. 56. Jahrestagung der Deutschen Gesellschaft für Medizinische Informatik, Biometrie und Epidemiologie (gmds), 6. Jahrestagung der Deutschen Gesellschaft für Epidemiologie (DGEpi). Mainz, 26.-29.09.2011. Düsseldorf: German Medical Science GMS Publishing House; 2011. Doc11gmds232

doi: 10.3205/11gmds232, urn:nbn:de:0183-11gmds2321

Published: September 20, 2011

© 2011 Ehreke et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.

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Objectives: There is a strong demand for screening instruments for mild cognitive impairment (MCI), as a pre-stage of dementia. The clock drawing test (CDT) is widely used to screen for dementia but the utility in screening for MCI is discussed controversially. In particular, it is still questionable which scoring system is the best in order to screen for MCI. We therefore aim to compare the utility of different CDT scoring systems for screening for MCI.

Methods: In a sample of 428 subjects of the LEILA 75+ study, CDT scores of different scoring systems were compared between subjects with and without MCI. Comparison of receiver operating characteristic (ROC; area under the curve, sensitivity, specificity) was performed and interrater reliability was calculated.

Results: The CDT scores differed significantly between MCI and non-MCI subjects according to all scoring systems applied. However, ROC of the CDT scores were not sufficient to reliably screen for MCI.

Conclusions: None of the present CDT scoring systems has got sufficient utility to reliably screen for MCI. Results indicate that the clinical value of the CDT could be improved by having a semiquantitative scoring, a wider score range and focusing on specific details of the clock like the hands and numbers.