International Psychogeriatrics

Research and Reviews

Reliability and Validity of the Hierarchic Dementia Scale

Lisa Rönnberg a1 and Kjerstin Ericsson a1
a1 Karolinska Institute, Department of Geriatric Medicine, Huddinge University Hospital, Huddinge, Sweden.

Article author query
rönnberg l   [PubMed][Google Scholar] 
ericsson k   [PubMed][Google Scholar] 


The aim of the study was to apply a method for measuring cognitive functioning in severely demented patients. Reliability and validity of the Hierarchic Dementia Scale (HDS) were tested. Fifty patients with dementia of the Alzheimer's type (DAT), multi-infarct dementia (MID), and dementia of mixed type (MIX) were studied. The interrater reliability was satisfactory as estimated by means of a kappa coefficient. The test retest reliability was rs = .96. The concurrent validity of the HDS, as measured by the correlation between the HDS and the MMSE, was rs = .86, and between the HDS and the CDR was rs = −.71. The results indicate that HDS is a useful and valid instrument for determination of the heterogeneous cognitive deficits in severe dementia.