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Age and Ageing Advance Access originally published online on March 10, 2008
Age and Ageing 2008 37(3):350; doi:10.1093/ageing/afn047
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Copyright © The Author 2008. Published by Oxford University Press on behalf of the British Geriatrics Society.

Addenbrooke's Cognitive Examination - Revised in day-to-day clinical practice

SIR—We read with interest the research letter by Larner about the clinical utility of the Addenbrooke's Cognitive Examination-Revised (ACE-R) [1]. In this study, we presume that the ACE-R was compared to a comprehensive clinical evaluation (a history, physical and cognitive examination plus pertinent investigations) performed by a clinician blinded to the test score. The results obtained make us question the clinical application of this tool. Despite choosing a modified cut-off point of 75/100 it was significantly worse than the comparator assessment with the sensitivity and specificity to detect dementia being just 91%. In addition, the ACE-R would be unable to accurately define the subtype of dementia. Even its ability to distinguish Alzheimer's from frontotemporal dementia is questionable [2]. Clearly, it could not be used in place of a comprehensive assessment. So it appears to add no additional information in this situation and therefore, it could be argued, represents 15 min of time that could be better used elsewhere.

Perhaps, its clinical utility should be in screening for cognitive impairment when preformed by non-specialists prior to referral for further assessment? However, in a survey the most common reason given for clinicians not using the shorter Mini-Mental State Examination was the time taken to perform it (typically around 8 min) [3]. This suggests that the ACE-R, taking twice as long to perform, would have a poor acceptance among non-specialists in screening for cognitive impairment where a large number of far briefer tools are available [4]. Maybe it would be best reserved for patients who self-report or whose family/carers report cognitive change yet they score well on briefer assessment tools. In this situation, its high sensitivity may be valuable to identify those patients who would benefit from a comprehensive clinical evaluation performed in a specialist clinic.

H. J. Woodford* and J. George

Department of Elderly Medicine, Cumberland Infirmary, Carlisle, CA2 7HY, UK

* To whom correspondence should be addressed E-mail: henry.woodford{at}ncumbria-acute.nhs.uk

References

  1. Larner AJ. Addenbrooke's Cognitive Examination-Revised (ACE-R) in day-to-day clinical practice. Age Ageing (2007) 36:685–6.[Free Full Text]
  2. Bier JC, Ventura M, Donckels V, et al. Is the Addenbrooke's Cognitive Examination effective to detect frontotemporal dementia? J Neurol (2004) 251:428–31.[CrossRef][Web of Science][Medline]
  3. Tangalos EG, Smith GE, Ivnik RJ, et al. The Mini-Mental State Examination in general medical practice: clinical utility and acceptance. Mayo Clin Proc (1996) 71:829–37.[Abstract]
  4. Woodford HJ, George J. Cognitive assessment in the elderly: a review of clinical methods. QJM (2007) 100:469–84.[Free Full Text]

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This Article
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