Operational definitions for the NINDS-AIREN criteria for vascular dementia an interobserver study

Elisabeth C.W. Van Straaten*, Philip Scheltens, Dirk L. Knol, Mark A. Van Buchem, Ewout J. Van Dijk, Paul A.M. Hofman, Giorgos Karas, Olafur Kjartansson, Frank Erik De Leeuw, Niels D. Prins, Reinhold Schmidt, Marieke C. Visser, Henry C. Weinstein, Frederik Barkhof

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Background and Purpose - Vascular dementia (VaD) is thought to be the most common cause of dementia after Alzheimer's disease. The commonly used International Workshop of the National Institute of Neurological Disorders and Stroke (NINDS) and the Association Internationale pour la Recherche et l'Enseignement en Neurosciences (AIREN) criteria for VaD necessitate evidence of vascular disease on CT or MRI of the brain. The purposes of our study were to operationalize the radiological part of the NINDS-AIREN criteria and to assess the effect of this operationalization on interobserver agreement. Methods - Six experienced and 4 inexperienced observers rated a set of 40 MRI studies of patients with clinically suspected VaD twice using the NINDS-AIREN set of radiological criteria. After the first reading session, operational definitions were conceived, which were subsequently used in the second reading session. Interobserver reproducibility was measured by Cohen's κ. Results - Overall agreement at the first reading session was poor (κ=0.29) and improved slightly after application of the additional definitions (κ=0.38). Raters in the experienced group improved their agreement from almost moderate (κ=0.39) to good (0.62). The inexperienced group started out with poor agreement (κ=0.17) and did not improve (κ=0.18). The experienced group improved in both the large- and small-vessel categories, whereas the inexperienced group improved generally in the extensive white matter hyperintensities categories. Conclusions - Considerable interobserver variability exists for the assessment of the radiological part of the NINDS-AIREN criteria. Use of operational definitions improves agreement but only for already experienced observers.

Original languageEnglish
Pages (from-to)1907-1912
Number of pages6
JournalStroke
Volume34
Issue number8
DOIs
Publication statusPublished - 1 Aug 2003

Cite this