Abstract
The purpose of this study was to develop a short questionnaire for psychosocial functioning
in patients with Parkinson's Disease (PD). The SCales for Outcomes in Parkinson's
disease—PsychoSocial questionnaire (SCOPA-PS) was tested in a survey and compared
with other instruments and with medical information. This survey was sent to 205 patents
with idiopathic PD. Eighty-six percent of the questionnaires were returned. Cronbach's
α was 0.83. Two-week test-retest reliability was 0.85 (intraclass correlation coefficient).
Construct validity with other scales (Spearman's rho) was 0.82 for the Parkinson's
Disease Questionnaire—39-item version (PDQ-39), 0.76 for the PDQ-8, 0.69 for the Hospital
Anxiety and Depression Scale, −0.61 for the Euroqol, and −0.60 for a visual analogue
scale evaluating Quality-of-Life. The summary index revealed a significant increase
with increasing disease severity. The SCOPA-PS is a new, short psychosocial questionnaire
for patients with PD with good clinimetric properties.
Keywords
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Article info
Publication history
Accepted:
October 31,
2002
Received in revised form:
October 20,
2002
Received:
March 7,
2002
Identification
Copyright
© 2003 Elsevier Science Inc. Published by Elsevier Inc. All rights reserved.
