Cambridge Cognition Examination (CAMCOG)

 

Cambridge Cognition Examination (CAMCOG) Evaluation Summary

  What does the tool measure? The CAMCOG is a standardized instrument for diagnosis and grading of dementia.
  What types of clients can the tool be used for? The CAMCOG can be used with, but is not limited to clients with stroke.
  Is this a screening or assessment tool? Assessment
Time to administer The CAMCOG takes 20 to 30 minutes to administer.
  Versions Revised CAMCOG (CAMCOG-R); Rotterdam-CAMCOG (R-CAMCOG); General Practitioner Assessment of Cognition (GPCOG)
Other Languages English; Dutch
Measurement Properties
  Reliability – No studies have examined the internal consistency of the CAMCOG in clients with stroke.
– No studies have examined the reliability of the CAMCOG in clients with stroke.
  Validity

Content:
No studies have examined the content validity of the CAMCOG in clients with stroke.

One study examined the content validity of the R-CAMCOG by reporting the steps for generating the shortened version of the CAMCOG.

Criterion:
Concurrent Validity:
No studies have examined the concurrent validity of the CAMCOG.

Predictive Validity:
Six studies examined the predictive validity of the CAMCOG and reported that the CAMCOG can be predicted by age, the R-CAMCOG, the Mini-Mental State Examination and cognitive and emotional impairments. Additionally, the CAMCOG was an excellent predictor of dementia 3 to 9 months post-stroke. However, the CAMCOG was not able to predict QOL in clients with stroke and is not predicted by the Functional Independence Measure.

Construct:
Convergent validity:
One study examined the convergent validity of the CAMCOG in clients with stroke and reported excellent correlations between the CAMCOG and the R-CAMCOG and the Mini-Mental State Examination shortly after and 1 year post-stroke. Correlations between the CAMCOG and the Functional Independence Measure range from adequate after stroke to poor at 1 year post-stroke.

One study examined the convergent validity of the CAMCOG-R and reported excellent correlations between the CAMCOG-R and the Raven Test and the Weigl Test and poor correlations between the CAMCOG-R and the Geriatric Depression Scale and the Barthel Index using Pearson correlation.

Known Groups:
Two studies using student t-test examined known groups validity of the CAMCOG and reported that the CAMCOG is able to distinguish between clients with or without dementia as well as aphasia severity in clients with stroke.

  Floor and ceiling effect One study examined the floor / ceiling effects of the CAMCOG in clients with stroke and reported that 14 items showed ceiling effects but no floor effects
  Does the tool detect change in patients?

– No studies have examined the responsiveness of the CAMCOG in clients with stroke.
– One study examined the responsiveness of the CAMCOG-R and reported that at follow-up scores changes were all statistically significant (p<0.01).

  Acceptability Items related to aphasia and upper extremity paresis might not be tested on all clients due to stroke severity.
Feasibility The instructions for administration and coding must be followed closely (Ruchinskas and Curyto, 2003).
How to obtain the tool? The CAMCOG can be obtained by purchasing the entire CAMDEX from the Cambridge University Department of Psychiatry