Assessment of the severity of dementia: validity and reliability of the Chinese (Cantonese) version of the Hierarchic Dementia Scale (CV-HDS).
BACKGROUND
With the rapid growth of the older population, early detection of cognitive deficits is crucial in slowing down functional deterioration of the elderly persons.


OBJECTIVE
To examine the validity and reliability of the Chinese (Cantonese) version of the Hierarchic Dementia Scale (CV-HDS) for Chinese older persons in Hong Kong.


METHODS
The HDS was translated into Cantonese Chinese. The content and cultural validity were evaluated by six expert panel members. Sixty-two participants with diagnosis of dementia were recruited for evaluation. Inter-rater reliability, test-retest reliability, internal consistency and concurrent validity were examined.


RESULTS
The CV-HDS demonstrated satisfactory psychometric properties. inter-rater reliability and test-retest reliability were high (alpha=0.89 and alpha=0.94 respectively). High value of Cronbach's alpha (alpha=0.94) demonstrated good internal consistency. The concurrent validity of CV-HDS, through correlation with its scores with that of the Chinese version of Mini Mental Status Examination, was established (ranged from r=0.58 to r=0.78, p<0.01).


CONCLUSIONS
The CV-HDS is a reliable and valid instrument for assessing severity of cognitive impairment in Cantonese speaking Chinese people with dementia. It facilitates treatment planning to optimize the effects of functional training and rehabilitation.
Poon
Vickie Wan-kei
VW
Occupational Therapy Department, North District Hospital, Hong Kong.
Lam
Linda Chiu-wa
LC
Wong
Samuel Yeung-shan
SY
D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People / Q000523:psychology; D002681:China / Q000208:ethnology; D003072:Cognition Disorders / Q000175:diagnosis* / Q000208:ethnology; D003704:Dementia / Q000175:diagnosis* / Q000208:ethnology; D005260:Female; D006723:Hong Kong; D006801:Humans; D007802:Language; D008297:Male; D015588:Observer Variation; D011569:Psychiatric Status Rating Scales / Q000592:standards*; D015203:Reproducibility of Results