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Parkinson’s Disease-Cognitive Rating Scale (PD-CRS)
Availability
The instrument is available here: Parkinson’s Disease-Cognitive Rating Scale.
Classification
 Supplemental: Parkinson’s Disease (PD)
 
 
Short Description of Instrument
The Parkinson’s Disease-Cognitive Rating Scale (PD-CRS) was developed to “capture the whole spectrum of cognitive functions impaired over the course of PD.” (Pagonabarraga et al., 2008)
 
Construct measured: Global cognitive function
 
Generic vs. disease specific: Disease specific
 
Means of administration: Rater administered (paper and pencil)
 
Intended respondent (e.g. patient, caregiver, etc): Patient
 
There are 9 items and 2 domains – subcortical-type cognitive items and cortical-type cognitive items.
 
The nine items include:
    • Immediate free recall verbal memory
    • Confrontation naming*
    • Sustained attention
    • Working memory
    • Unprompted drawing of a clock
    • Copy drawing of a clock*
    • Delayed free recall verbal memory
    • Alternating verbal fluency
    • Action verbal fluency
    •  
*Cortical-type cognitive items
Scoring
Subcortical (0 –114) and cortical scores (0 –20) are obtained by adding the raw scores of the items within each group. Total scores (0 – 134) on the PD-CRS are calculated by adding the Subcortical and cortical PD-CRS scores
 
Higher scores indicate better cognition.
References
Pagonabarraga J, Kulisevsky J, Llebaria G, García-Sánchez C, Pascual-Sedano B, Gironell A. Parkinson's disease-cognitive rating scale: a new cognitive scale specific for Parkinson's disease. Mov Disord. 2008;23(7):998–1005.
 
Fernández de Bobadilla R, Pagonabarraga J, Martínez-Horta S, Pascual-Sedano B, Campolongo A, Kulisevsky J. Parkinson's disease-cognitive rating scale: psychometrics for mild cognitive impairment. Mov Disord. 2013;28(10):1376–1383.
 
Kulisevsky J, Fernández de Bobadilla R, Pagonabarraga J, Martínez-Horta S, Campolongo A, García-Sánchez C, Pascual-Sedano B, Ribosa-Nogué R, Villa-Bonomo C. Measuring functional impact of cognitive impairment: validation of the Parkinson's disease cognitive functional rating scale. Parkinsonism Relat Disord. 2013;19(9):812–817.
 
Martínez-Martín P, Prieto-Jurczynska C, Frades-Payo B. [Psychometric attributes of the Parkinson's Disease-Cognitive Rating Scale. An independent validation study]. Rev Neurol. 2009;49(8):393–398. Spanish.
 
Kulisevsky J, Pagonabarraga J. Cognitive impairment in Parkinson's disease: tools for diagnosis and assessment. Mov Disord. 2009;24(8):1103–1110.
 
Santangelo G, Lagravinese G, Battini V, Chiorri C, Siciliano M, Abbruzzese G, Vitale C, Barone P. The Parkinson's Disease-Cognitive Rating Scale (PD-CRS): normative values from 268 healthy Italian individuals. Neurol Sci. 2017;38(5):845–853.
 
Santangelo G, Barone P, Abbruzzese G, Ferini-Strambi L, Antonini A; IRIS Study Group. Validation of the Italian version of Parkinson's disease-cognitive rating scale (PD-CRS). Neurol Sci. 2014;35(4):537–544.
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