BACKGROUND Social functioning is crucial for the determinants of Parkinson's disease (PD) with dementia; however, there is no social functioning scale applicable to PD. OBJECTIVE This study aimed to develop a social functioning scale specific to PD (PDSFS) and provide a cut-off score to improve diagnosis accuracy. METHODS The items were developed through literature, interview patients, and PD expertise. After the pilot study, one hundred fifty-seven patients and 74 healthy participants were enrolled and completed the Mini-Mental State Examination, Clock Drawing Test, Activities of Daily Living, Neuropsychiatric Inventory, Adaptive Behavior Assessment System-Second Edition (ABAS-II) and part III of the Movement Disorder Society-sponsored revision of the Unified Parkinson's Disease Rating Scale (MDS-UPDRS). RESULTS The final PDSFS has 23 items. The exploratory factor analysis revealed three factors, including "Family Life, Hobbies and Self-Care", "Interpersonal Relationship and Recreational Leisure", and "Social Bond". The internal consistency coefficient was 0.883, and the test-retest reliability was 0.774, respectively. The total score of the PDSFS was significantly related to the total score of ABAS-II (r = 0.609, p < 0.001), and was not correlated with the third part of MDS-UPDRS (p = 0.736). A significant intergroup difference was found (p < 0.001), and the healthy controls had the highest PDSFS score, followed by non-demented PD and PD dementia. The optimal cut-off score for PD patients with dementia was 39 (sensitivity: 0.735; specificity: 0.857). CONCLUSIONS PDSFS is a practical and psychometrically sound tool to access the social functioning of the PD population.

中文翻译：

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帕金森病患者社会功能量表的开发。

背景 社会功能对于帕金森病 (PD) 痴呆症的决定因素至关重要。然而，没有适用于 PD 的社会功能量表。目的 本研究旨在开发一种特定于 PD 的社会功能量表 (PDSFS)，并提供一个临界分数以提高诊断准确性。方法 这些项目是通过文献、采访患者和 PD 专业知识开发的。试点研究后，157 名患者和 74 名健康参与者被纳入并完成了简易精神状态检查、时钟绘图测试、日常生活活动、神经精神量表、适应性行为评估系统 - 第二版 (ABAS-II)运动障碍协会赞助的统一帕金森病评定量表 (MDS-UPDRS) 修订版的第三部分。结果 最终的 PDSFS 有 23 个项目。探索性因素分析揭示了三个因素，包括“家庭生活、爱好和自我照顾”、“人际关系和休闲娱乐”和“社会纽带”。内部一致性系数为0.883，重测信度分别为0.774。PDSFS总分与ABAS-II总分显着相关（r=0.609，p<0.001），与MDS-UPDRS第三部分无关（p=0.736）。发现了显着的组间差异（p < 0.001），健康对照组的 PDSFS 得分最高，其次是非痴呆 PD 和 PD 痴呆。患有痴呆症的 PD 患者的最佳临界值为 39（敏感性：0.735；特异性：0.857）。