Assessing cognition in Parkinson disease: use of the cognitive linguistic quick test.
OBJECTIVE
To evaluate the Cognitive Linguistic Quick Test (CLQT) as a cognitive screening tool in Parkinson disease (PD).


METHODS
A total of 93 patients with PD were evaluated with the Mini-Mental State Examination (MMSE) and the CLQT. The CLQT provides separate ratings for 5 cognitive domains. Descriptive statistics, correlations between the tests, and diagnostic value for dementia were analyzed.


RESULTS
Cognitive Linguistic Quick Test correlated well with MMSE. Diagnostic values for dementia were similar for the 2 instruments. Unlike the MMSE, the CLQT also provided domain-specific information on cognitive deficits. Cognitive domains were differentially affected between and within the demented and nondemented patient groups with PD: memory was the weakest domain in the demented group and attention in the nondemented.


CONCLUSIONS
The CLQT is a valuable instrument in assessing cognitive dysfunction in PD. The CLQT is superior to the MMSE as it also provides cognitive domain-specific information.
Parashos
Sotirios A
SA
Struthers Parkinson's Center, Golden Valley, Minnesota 55427, USA. paras001@umn.edu
Johnson
Marjorie L
ML
Erickson-Davis
Cordelia
C
Wielinski
Catherine L
CL
D000368:Aged; D003071:Cognition; D003072:Cognition Disorders / Q000150:complications / Q000175:diagnosis*; D003704:Dementia / Q000150:complications / Q000175:diagnosis*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008037:Linguistics; D008297:Male; D009483:Neuropsychological Tests; D010300:Parkinson Disease / Q000150:complications / Q000175:diagnosis*; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity