Validity and reliability of the Short Form-36 in cervical spondylotic myelopathy
Validity and reliability of the Short Form-36 in cervical spondylotic myelopathy
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DOI：
10.3171/spi.2002.97.2.0180
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发表时间：
2002-09-01
影响因子：
4.1
通讯作者：
Roberts, MS
中科院分区：
文献类型：
--
作者：
King, JT;Roberts, MS
Object.有效性（一项测试测量其预期测量内容的程度）和可靠性（同一概念的测量随时间推移或跨收集数据方法的稳定性和可重复性）是任何结果工具的重要特征。通用结果工具旨在用于任何人群;然而，应验证其在特定疾病中的有效性和可靠性，以确保其适用于该疾病。在这项研究中，作者评估了医学结局研究简表-36（SF-36）的有效性和可靠性，SF-36是一种通用的结局工具，用于脊髓型颈椎病（CSM）患者人群。SF-36是在门诊基础上对CSM患者队列进行的。根据Nurick、库珀、Harsh和日本骨科协会（乔亚）的西方修订版脊髓病量表，使用来自结构化访谈和体格检查结果的症状相关数据对病例进行分类。通过使用Cuzick趋势非参数检验确定SF-36评分是否根据与脊髓病评分相关的预定义假设变化来评估结构效度。采用Cronbach α量表评估SF-36量表的信度。88例CSM患者完成了SF-36量表和访谈。通过证实SF-36量表和Nurick脊髓病量表之间的假设关系，证明了结构效度（p小于或等于0.003），库珀腿部分量表（p小于或等于0.012，一般健康感知领域除外[p = 0.091]），苛刻（p ≤ 0.016）和改良乔亚的运动成分（p ≤ 0.006）。SF-36的8个领域量表、躯体和心理分量表的信度均得到证实，其中Cronbach α满足Nunnally标准0.7。SF-36提供了有关CSM患者的有效且可靠的数据。
Object. Validity (the extent to which a test measures what it is intended to measure) and reliability (the stability and reproducibility of measures of the same concept over time or across methods of gathering data) are important characteristics of any outcomes instrument. Generic outcomes instruments are designed for use in any population; however, their validity and reliability in particular diseases should be verified to ensure their appropriateness for use in that disease. In this study the authors assessed the validity and reliability of the Medical Outcomes Study Short Form-36 (SF-36), a generic outcomes instrument, in a population of patients with cervical spondylotic myelopathy (CSM).Methods. The SF-36 was administered to a cohort of patients with CSM on an outpatient basis. Symptom-related data derived from a structured interview and physical examination findings were used to classify cases according to the myelopathy scales of Nurick, Cooper, Harsh, and a Western modification of the Japanese Orthopaedic Association (JOA). Construct validity was assessed by determining whether SF-36 scores varied in accordance with predefined hypotheses relating to the myelopathy scores by using the Cuzick nonparametric test for trend. The reliability of the SF-36 scores was assessed using Cronbach alpha.Eighty-eight patients with CSM completed the SF-36 and interview. Construct validity was demonstrated by confirming the hypothesized relationship between SF-36 scales and the myelopathy scales of Nurick (p less than or equal to 0.003), Cooper leg subscale (p less than or equal to 0.012, except the general health perceptions domain [p = 0.091]), Harsh (p less than or equal to 0.016), and the motor component of the modified JOA (p less than or equal to 0.006). Reliability was demonstrated for all eight SF-36 domain scales and the physical component and mental component summary scales, in which Cronbach alpha satisfied the Nunnally criterion of 0.7.Conclusions. The SF-36 provides valid and reliable data on patients with CSM.