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Assessing cognition in Parkinson disease: use of the cognitive linguistic quick test
Sotirios A Parashos1, Marjorie L Johnson, Cordelia Erickson-Davis
1Struthers Parkinson's Center, Golden Valley, Minnesota 55427, USA. paras001@umn.edu
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.
