KORT Physical Therapy, Louisville, Kentucky, USA.
Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.
J Dance Med Sci. 2021 Mar 15;25(1):9-17. doi: 10.12678/1089-313X.031521b.
The Dance Functional Outcome Survey (DFOS) is a dance-specific questionnaire developed for use with ballet and modern dancers at all training levels. To date, no study has assessed the psychometric properties of the DFOS in pediatric dancers. The purposes of this study were to determine: 1. the reliability of the DFOS when used with healthy and injured pediatric dancers; 2. the validity of the DFOS com- pared to a well-established generic scale, the Pediatric Quality of Life Inventory Physical Function Scale (PedsQL-PFS); and 3. the sensitivity and responsiveness to change of the DFOS in injured dancers. One hundred and two dancers completed the DFOS twice within 10 days. Intra-class correlation coefficients (ICCs) were used to assess test-retest reliability. In a sample of 148 dancers, construct validity was explored by comparing the DFOS to the PedsQL-PFS using Pearson correlations, and Exploratory Factor Analysis (EFA) and Cronbach's alpha were used for internal consistency analyses. A sub-set of 22 injured dancers was employed to examine responsiveness using repeated measures analysis of variance (p < 0.05). The DFOS demonstrated high test-retest reliability (ICC ≥ 0.90). The DFOS total score, activities of daily living (ADL), and dance technique sub-scores had strong construct validity compared to the PedsQL-PFS (r ≥ 0.79). Cronbach's alpha was high ( α = 0.92), indicating excellent internal consistency. There were significant differences across time in DFOS scores (p < 0.001), demonstrating responsiveness to change. There were no floor or ceiling effects. Thus, the DFOS demonstrates excellent reliability, strong validity, and good responsiveness over time and is a viable tool for assessing function in pediatric dancers.
舞蹈功能结局调查问卷（DFOS）是一种专门针对芭蕾舞和现代舞舞者开发的调查问卷，适用于各级别训练水平的舞者。迄今为止，尚无研究评估过 DFOS 在儿科舞者中的心理测量特性。本研究的目的是确定：1. 在健康和受伤的儿科舞者中使用 DFOS 的可靠性；2. 与经过验证的通用量表，即儿科生活质量量表身体功能量表（PedsQL-PFS）相比，DFOS 的有效性；3. 在受伤舞者中，DFOS 的敏感性和反应变化能力。102 名舞者在 10 天内完成了 DFOS 两次。使用组内相关系数（ICC）评估测试-重测信度。在 148 名舞者的样本中，通过比较 DFOS 与 PedsQL-PFS 的 Pearson 相关系数，探索结构有效性，通过探索性因素分析（EFA）和 Cronbach's alpha 进行内部一致性分析。在 22 名受伤舞者的子集中，使用重复测量方差分析（p < 0.05）来评估反应能力。DFOS 显示出较高的测试-重测信度（ICC ≥ 0.90）。DFOS 总分、日常生活活动（ADL）和舞蹈技术子量表与 PedsQL-PFS 相比具有较强的结构有效性（r ≥ 0.79）。Cronbach's alpha 较高（α=0.92），表明内部一致性良好。DFOS 评分在时间上有显著差异（p < 0.001），表明对变化有反应能力。没有地板或天花板效应。因此，DFOS 具有良好的可靠性、较强的有效性和良好的反应性，并且是评估儿科舞者功能的可行工具。
