Niki Hisateru, Tatsunami Shinobu, Haraguchi Naoki, Aoki Takafumi, Okuda Ryuzo, Suda Yasunori, Takao Masato, Tanaka Yasuhito
Department of Orthopaedic Surgery, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 216-8511, Japan.
J Orthop Sci. 2011 Sep;16(5):556-64. doi: 10.1007/s00776-011-0131-6. Epub 2011 Jul 14.
The Clinical Outcomes Committee of the Japanese Society for Surgery of the Foot (JSSF) has conducted the second Field Survey of the Outcome Instrument for the Foot and Ankle version 2.
The survey of the Outcome Instrument version 2, which was composed of 43 items, was performed in 313 patients (154 men and 159 women) who had pathological conditions related to the foot and ankle. Optional sports items in the Outcome Instrument version 2 were analyzed in 123 patients. Internal consistency and construct validity of the Outcome Instrument version 2 were assessed. Correlation of the Outcome Instrument version 2 score with Short Form 36 (SF36) and JSSF scores was analyzed to evaluate criterion validity.
Both the EFA and CFA demonstrated good alignment of questionnaire items with their intended subscales in most cases. Sports items were not clearly classified into subgroups. Therefore, it seemed reasonable to use those as a set of questions in a single subscale. The present subscales, having similar names as the SF36 subscales, were closely correlated with the respective subscales. In those cases, the magnitude of the correlation coefficient was >0.6 (p < 0.001) except the present subscale called General Health and Well-being. Comparison of the present scores with JSSF evaluation scores showed satisfactory results except in patients with rheumatoid arthritis.
The Outcome Instrument version 2 demonstrated acceptable psychometric performances as outcome measures for patients with pathological conditions related to the foot and ankle. This outcome instrument would be helpful to evaluate patients with foot and/or ankle impairment. However, the analyses of the test-retest reliability and the influence of background factors such as age and gender, etc., on Outcome Instrument version 2 are needed in the third field survey.
日本足外科学会（JSSF）临床结果委员会开展了足部与踝关节结局评估工具第2版的第二次实地调查。
对由43个项目组成的结局评估工具第2版，在313例患有足部与踝关节相关病理状况的患者（154例男性和159例女性）中进行调查。对结局评估工具第2版中的可选运动项目在123例患者中进行分析。评估结局评估工具第2版的内部一致性和结构效度。分析结局评估工具第2版评分与简明健康状况调查量表（SF36）和JSSF评分的相关性以评估效标效度。
探索性因子分析（EFA）和验证性因子分析（CFA）在大多数情况下均显示问卷项目与其预期子量表具有良好的一致性。运动项目未明确分为亚组。因此，将这些项目作为单个子量表中的一组问题使用似乎是合理的。目前与SF36子量表名称相似的子量表，与各自的子量表密切相关。在这些情况下，除了目前称为总体健康与幸福感的子量表外，相关系数的大小均>0.6（p<0.001）。将目前的评分与JSSF评估评分进行比较，除类风湿关节炎患者外，结果令人满意。
结局评估工具第2版作为足部与踝关节相关病理状况患者的结局测量工具，表现出可接受的心理测量性能。该结局评估工具将有助于评估足部和/或踝关节损伤患者。然而，在第三次实地调查中需要分析结局评估工具第2版的重测信度以及年龄和性别等背景因素的影响。
