[Clock drawing test: qualitative and quantitative evaluation methods].
BACKGROUND
The interest about the Clock Drawing Test (CDT) is justified because the importance of praxic disorders and especially the constructive apraxias in demented patients. Generally, this kind of deficits or intellectual losses has been less studied than aphasisas and agnosias. Nevertheless, praxias are usually affected in demential processes, even in initial stages.


OBJECTIVE
We try to determine if the CDT can be useful as an assessment tool for dementia. We have used two assessment systems of the clock drawing in order to select an useful and reliable method of correction.


METHODS
The sample is made up of 35 subjects older than 60 years, they were administered the Mini Cognitive Examination (MCE) and the CDT. Patients with previous diagnosis of dementia, others with physical pathology without neurological affectation and, finally, subjects without any kind of pathology were included in order to get a wide rank of punctuations. We carried out a reliability analysis between two raters and the discriminant validity of the CDT compared to the Spanish adaptation of the Mini Mental Examination.


RESULTS
We achieve a high reliability inter examiner rates. Quantitative criteria of both scales are more objective than qualitative ones, therefore, these last should be more operativized.


CONCLUSIONS
The results obtained in this work suggest that the clock drawing allow a rapid evaluation of cognitive function as the presence of cognitive impairment.
Martínez-Arán
A
A
Servicio de Psicología Clínica, Hospital Clínico y Provincial de Barcelona, España.
Solé
P
P
Salamero
M
M
de Azpiazu
P
P
Tomás
S
S
Marín
R
R
D000368:Aged; D000369:Aged, 80 and over; D001072:Apraxias / Q000175:diagnosis* / Q000209:etiology*; D003072:Cognition Disorders / Q000175:diagnosis*; D003704:Dementia / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests