Department of Health Sciences, Lund University, Lund, Sweden.
BMC Geriatr. 2010 Oct 25;10:78. doi: 10.1186/1471-2318-10-78.
Fear of falling (FOF) is common in Parkinson's disease (PD), and it is considered a vital aspect of comprehensive balance assessment in PD. FOF can be conceptualized differently. The Falls-Efficacy Scale (FES) assesses fall-related self-efficacy, whereas the Survey of Activities and Fear of Falling in the Elderly (SAFFE) assesses activity avoidance due to the risk of falling. This study aimed at investigating the validity and reliability of FES and SAFFE in people with PD.
Seventy-nine people with PD (mean age; 64 years, SD 7.2) completed the Swedish version of FES(S), SAFFE and the physical functioning (PF) scale of the 36-Item Short-Form Health Survey (SF-36). FES(S) and SAFFE were administered twice, with an 8.8 (SD 2.3) days interval. Assumptions for summing item scores into total scores were examined and score reliability (Cronbach's alpha and test-retest reliability) were calculated. Construct validity was assessed by examining the pattern of Spearman correlations (rs) between the FES(S)/SAFFE and other variables, and by examining differences in FES(S)/SAFFE scores between fallers and non-fallers, genders, and between those reporting FOF and unsteadiness while turning.
For both scales, item mean scores (and standard deviations) were roughly similar and corrected item-total correlations exceeded 0.4. Reliabilities were ≥ 0.87. FES(S)-scores correlated strongest (rs, -0.74, p < 0.001) with SAFFE-scores, whereas SAFFE-scores correlated strongest with PF-scores (rs, -0.76, p < 0.001). Both scales correlated weakest with age (rs ≤ 0.08). Experiencing falls, unsteadiness while turning, and FOF was associated with lower fall-related self-efficacy and higher activity avoidance.
This study provides initial support for the score reliability and validity of the FES(S) and SAFFE in people with PD.
在帕金森病（PD）中，对跌倒的恐惧（FOF）很常见，并且它被认为是 PD 综合平衡评估的重要方面。FOF 可以有不同的概念。跌倒效能量表（FES）评估与跌倒相关的自我效能，而老年人活动和跌倒恐惧调查（SAFFE）评估因跌倒风险而导致的活动回避。本研究旨在探讨 FES 和 SAFFE 在 PD 患者中的有效性和可靠性。
79 名 PD 患者（平均年龄 64 岁，SD 7.2）完成了瑞典语版 FES（S）、SAFFE 和 36 项简短健康调查（SF-36）的身体功能（PF）量表。FES（S）和 SAFFE 间隔 8.8（SD 2.3）天重复测量两次。检查了将项目得分加总为总分的假设，并计算了得分可靠性（Cronbach's alpha 和重测信度）。通过检查 FES（S）/SAFFE 与其他变量之间的 Spearman 相关系数（rs）模式以及检查跌倒者和非跌倒者、性别以及报告跌倒恐惧和转身不稳者之间的 FES（S）/SAFFE 得分差异来评估结构效度。
对于这两个量表，项目平均得分（和标准差）大致相似，且校正后的项目总分相关系数大于 0.4。信度均≥0.87。FES（S）得分与 SAFFE 得分相关性最强（rs，-0.74，p<0.001），而 SAFFE 得分与 PF 得分相关性最强（rs，-0.76，p<0.001）。这两个量表与年龄的相关性最弱（rs≤0.08）。经历跌倒、转身不稳和跌倒恐惧与较低的跌倒相关自我效能和较高的活动回避相关。
本研究初步支持 FES（S）和 SAFFE 在 PD 患者中的得分可靠性和有效性。
