title: A short psychosocial questionnaire for patients with Parkinson's disease: the SCOPA-PS.
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 alpha 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.
authors.affiliation: Department of Neurology, Leiden University Medical Center K5 Q 92, P.O. Box 9600, NL-2300 RC Leiden, The Netherlands. J.Marinus@lumc.nl
authors.forename: Johan
authors.initials: J
authors.lastname: Marinus
authors.forename: Martine
authors.initials: M
authors.lastname: Visser
authors.forename: Pablo
authors.initials: P
authors.lastname: Martínez-Martín
authors.forename: Jacobus J
authors.initials: JJ
authors.lastname: van Hilten
authors.forename: Anne M
authors.initials: AM
authors.lastname: Stiggelbout
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D001007:Anxiety / Q000209:etiology; D003863:Depression / Q000209:etiology; D004185:Disability Evaluation; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000523:psychology*; D011569:Psychiatric Status Rating Scales / Q000592:standards; D011788:Quality of Life; D015203:Reproducibility of Results; D012107:Research Design / Q000592:standards; D020377:Self Efficacy; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires / Q000592:standards*