Journal
MOVEMENT DISORDERS
Volume 34, Issue 3, Pages 430-435Publisher
WILEY
DOI: 10.1002/mds.27617
Keywords
dementia; mild cognitive impairment; neuropsychological tests; Parkinson's disease; survival analysis
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Funding
- Michael J. Fox Foundation
- Dutch Parkinson's Disease Foundation
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Background The International Parkinson and Movement Disorders Society criteria for mild cognitive impairment in PD need validation. The objectives of this present study were to evaluate prognostic validity of level I (abbreviated) International Parkinson and Movement Disorders Society mild cognitive impairment in PD criteria for development of PD dementia and compared them with level II (comprehensive) criteria. Methods We analyzed data from 8 international studies (1045 patients) from our consortium that included baseline data on demographics, motor signs, depression, detailed neuropsychological testing, and longitudinal follow-up for conversion to Parkinson's disease dementia. Survival analysis evaluated their contribution to the hazard of Parkinson's disease dementia. Results Level I mild cognitive impairment in PD, increasing age, male sex, and severity of PD motor signs independently increased the hazard of Parkinson's disease dementia. Level I and level II mild cognitive impairment in PD classification had similar discriminative ability with respect to the time to Parkinson's disease dementia. Conclusions Level I mild cognitive impairment in PD classification independently contributes to the hazard of Parkinson's disease dementia. This finding supports the prognostic validity of the abbreviated mild cognitive impairment in PD criteria. (c) 2019 International Parkinson and Movement Disorder Society
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