[Metric properties of clinimetric indexes for non-motor dysfunction of Parkinson's disease in Mexican population].
OBJECTIVE
To determine the metric properties of the non-motor symptoms questionnaire (NMSQuest), non-motor symptoms scale (NMSSS) and SCOPA-AUT clinimetric instruments to assess non motor dysfunction in Mexican population.


METHODS
After linguistic validation, the instruments were applied to 100 consecutive Parkinson's disease patients to analyze its metric properties in Mexican out-patients from the National Institute of Neurology and Neurosurgery.


RESULTS
Internal consistency by Cronbach's alpha was above 0.80 for all instruments. Inter-item and item-total correlations were above 0.30 in the majority of the domains and inter-observer variability was acceptable. Total score did not correlate with any of the registered clinical variables.


CONCLUSIONS
The metric properties of the three instruments were acceptable and similar to published data from other countries.
Cervantes-Arriaga
Amin
A
Laboratorio Clínico de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía, DF Mexico. acervantes@innn.edu.mx
Rodríguez-Violante
Mayela
M
Villar-Velarde
Alejandra
A
López-Gómez
Mario
M
Corona
Teresa
T
D000368:Aged; D005260:Female; D006801:Humans; D007802:Language; D008297:Male; D008800:Mexico; D008875:Middle Aged; D010045:Outpatients; D010300:Parkinson Disease / Q000503:physiopathology*; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires