Psychometric properties of the Italian version of scale for outcomes in Parkinson’s disease psychiatric complications in Parkinson disease
Abstract The Scales for Outcomes in Parkinson’s disease-Psychiatric Complications (SCOPA-PC) is a validated tool to score psychotic and compulsive symptoms in Parkinson’s disease (PD). We translated into Italian the SCOPA-PC and evaluated its psychometric properties and clinical correlates in differ...
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Nature Portfolio
2025-05-01
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| author | Sofia Cuoco Arianna Cappiello Immacolata Carotenuto Maria Autuori Rossella Bisogno Cristiano Sorrentino Marco Aiello Paolo Barone Marina Picillo |
| author_facet | Sofia Cuoco Arianna Cappiello Immacolata Carotenuto Maria Autuori Rossella Bisogno Cristiano Sorrentino Marco Aiello Paolo Barone Marina Picillo |
| author_sort | Sofia Cuoco |
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| description | Abstract The Scales for Outcomes in Parkinson’s disease-Psychiatric Complications (SCOPA-PC) is a validated tool to score psychotic and compulsive symptoms in Parkinson’s disease (PD). We translated into Italian the SCOPA-PC and evaluated its psychometric properties and clinical correlates in different subgroups of PD patients. The scale underwent translation, back-translation, and cognitive pretesting before being administered to a calculated sample of 135 PD patients. All patients underwent a clinical interview, motor evaluation, cognitive screening test, behavioral and functional scales. We explored SCOPA-PC feasibility, acceptability, internal consistency, convergent validity, known-groups validity, and test–retest reliability. The mean SCOPA-PC score was 1.99 ± 2.09. The internal consistency was acceptable (α = 0.631); corrected item-total correlation was > 0.45 for most items. The significant and moderate correlation of the SCOPA-PC with other tools evaluating psychiatric symptoms indicated adequate convergent validity of the scale. The factor analysis disclosed two factors, with total variance equal to 50.19%. The reliability of SCOPA-PC was high especially in cognitively preserved patients not on medications for dementia, depression, psychosis and anxiety. The SCOPA-PC is a rapid and reliable screening tool for assessing psychotic and compulsive symptoms in PD. Our data support a role for the SCOPA-PC as a screening scale in early, non-demented PD. |
| format | Article |
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| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-05-01 |
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| spelling | doaj-art-3facd48c241b447189e1e070f3c56b842025-08-20T03:48:15ZengNature PortfolioScientific Reports2045-23222025-05-011511910.1038/s41598-025-03088-3Psychometric properties of the Italian version of scale for outcomes in Parkinson’s disease psychiatric complications in Parkinson diseaseSofia Cuoco0Arianna Cappiello1Immacolata Carotenuto2Maria Autuori3Rossella Bisogno4Cristiano Sorrentino5Marco Aiello6Paolo Barone7Marina Picillo8Neuroscience Section, Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of SalernoNeuroscience Section, Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of SalernoNeuroscience Section, Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of SalernoNeuroscience Section, Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of SalernoNeuroscience Section, Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of SalernoNeuroscience Section, Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of SalernoIRCCS SynlabSDNNeuroscience Section, Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of SalernoNeuroscience Section, Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of SalernoAbstract The Scales for Outcomes in Parkinson’s disease-Psychiatric Complications (SCOPA-PC) is a validated tool to score psychotic and compulsive symptoms in Parkinson’s disease (PD). We translated into Italian the SCOPA-PC and evaluated its psychometric properties and clinical correlates in different subgroups of PD patients. The scale underwent translation, back-translation, and cognitive pretesting before being administered to a calculated sample of 135 PD patients. All patients underwent a clinical interview, motor evaluation, cognitive screening test, behavioral and functional scales. We explored SCOPA-PC feasibility, acceptability, internal consistency, convergent validity, known-groups validity, and test–retest reliability. The mean SCOPA-PC score was 1.99 ± 2.09. The internal consistency was acceptable (α = 0.631); corrected item-total correlation was > 0.45 for most items. The significant and moderate correlation of the SCOPA-PC with other tools evaluating psychiatric symptoms indicated adequate convergent validity of the scale. The factor analysis disclosed two factors, with total variance equal to 50.19%. The reliability of SCOPA-PC was high especially in cognitively preserved patients not on medications for dementia, depression, psychosis and anxiety. The SCOPA-PC is a rapid and reliable screening tool for assessing psychotic and compulsive symptoms in PD. Our data support a role for the SCOPA-PC as a screening scale in early, non-demented PD.https://doi.org/10.1038/s41598-025-03088-3Behavioral symptomsParkinson diseasePsychiatric symptomsImpulsive dyscontrol |
| spellingShingle | Sofia Cuoco Arianna Cappiello Immacolata Carotenuto Maria Autuori Rossella Bisogno Cristiano Sorrentino Marco Aiello Paolo Barone Marina Picillo Psychometric properties of the Italian version of scale for outcomes in Parkinson’s disease psychiatric complications in Parkinson disease Scientific Reports Behavioral symptoms Parkinson disease Psychiatric symptoms Impulsive dyscontrol |
| title | Psychometric properties of the Italian version of scale for outcomes in Parkinson’s disease psychiatric complications in Parkinson disease |
| title_full | Psychometric properties of the Italian version of scale for outcomes in Parkinson’s disease psychiatric complications in Parkinson disease |
| title_fullStr | Psychometric properties of the Italian version of scale for outcomes in Parkinson’s disease psychiatric complications in Parkinson disease |
| title_full_unstemmed | Psychometric properties of the Italian version of scale for outcomes in Parkinson’s disease psychiatric complications in Parkinson disease |
| title_short | Psychometric properties of the Italian version of scale for outcomes in Parkinson’s disease psychiatric complications in Parkinson disease |
| title_sort | psychometric properties of the italian version of scale for outcomes in parkinson s disease psychiatric complications in parkinson disease |
| topic | Behavioral symptoms Parkinson disease Psychiatric symptoms Impulsive dyscontrol |
| url | https://doi.org/10.1038/s41598-025-03088-3 |
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