Freezing of gait (FOG) in Parkinson’s disease (PD) is a highly disabling symptom which impacts quality of life. The New FOG Questionnaire (NFOG-Q) is the most commonly used tool worldwide to characterize FOG severity in PD. This study aims to provide a German translation of the NFOG-Q and to assess its validity in people with PD. The questionnaire was translated using forward-backward translation. Validity was tested in 57 PD patients with FOG via Cronbach’s alpha for internal consistency and Spearman correlations with several clinical measures to quantify disease severity, mobility, fall risk, and cognitive state for convergent and divergent validity. The German version of the NFOG-Q shows good internal consistency (Cα = 0.84). Furthermore, the NFOG-Q score was significantly correlated with the MDS-UPDRS III, H&Y stage, Timed Up and Go test, and the subjective fear of falling (FES-I). The lack of correlation with cognition (MoCA) points towards good divergent validity. This study provides a German version of the NFOG-Q which proved to be valid for the assessment of FOG severity in individuals with PD.

中文翻译：

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帕金森氏病患者新步态冻结问卷德文版的验证

帕金森氏病（PD）的步态冻结（FOG）是一种高度致残的症状，会影响生活质量。新FOG问卷（NFOG-Q）是全球最常用的PD病中FOG严重性特征分析工具。这项研究旨在提供NFOG-Q的德语翻译，并评估其在PD患者中的有效性。使用向前-向后翻译来翻译问卷。通过Cronbach's alpha对57名PD FOG PD患者进行了内部一致性和Spearman相关性测试，并通过多种临床措施对疾病的严重程度，活动性，跌倒风险和认知状态进行了量化，以验证其有效性。的NFOG-Q示出了德语版本良好的内部一致性（C α = 0.84）。此外，NFOG-Q得分与MDS-UPDRS III，H＆Y阶段，定时和继续测试以及主观跌落恐惧感（FES-1）显着相关。缺乏与认知的相关性（MoCA）表明良好的发散效度。这项研究提供了德语版本的NFOG-Q，它被证明可有效评估PD患者的FOG严重程度。