Universidad de Malaga, Andalucia Tech, Facultad de Ciencias de la Salud, Departamento de Psiquiatria y Fisioterapia, Instituto de Biomedicina de Malaga (IBIMA), Grupo de Clinimetria (AE-14), Av/ Arquitecto Peñalosa s/n (Teatinos Campus Expansion), Malaga, Spain.
Health Qual Life Outcomes. 2014 Jun 27;12:96. doi: 10.1186/1477-7525-12-96.
The Spine Functional Index (SFI) is a recently published, robust and clinimetrically valid patient reported outcome measure.
The purpose of this study was the adaptation and validation of a Spanish-version (SFI-Sp) with cultural and linguistic equivalence.
A two stage observational study was conducted. The SFI was cross-culturally adapted to Spanish through double forward and backward translation then validated for its psychometric characteristics. Participants (n = 226) with various spine conditions of >12 weeks duration completed the SFI-Sp and a region specific measure: for the back, the Roland Morris Questionnaire (RMQ) and Backache Index (BADIX); for the neck, the Neck Disability Index (NDI); for general health the EQ-5D and SF-12. The full sample was employed to determine internal consistency, concurrent criterion validity by region and health, construct validity and factor structure. A subgroup (n = 51) was used to determine reliability at seven days.
The SFI-Sp demonstrated high internal consistency (α = 0.85) and reliability (r = 0.96). The factor structure was one-dimensional and supported construct validity. Criterion specific validity for function was high with the RMQ (r = 0.79), moderate with the BADIX (r = 0.59) and low with the NDI (r = 0.46). For general health it was low with the EQ-5D and inversely correlated (r = -0.42) and fair with the Physical and Mental Components of the SF-12 and inversely correlated (r = -0.56 and r = -0.48), respectively. The study limitations included the lack of longitudinal data regarding other psychometric properties, specifically responsiveness.
The SFI-Sp was demonstrated as a valid and reliable spine-regional outcome measure. The psychometric properties were comparable to and supported those of the English-version, however further longitudinal investigations are required.
脊柱功能指数（SFI）是最近发表的一种可靠的临床有效性患者报告结局测量工具。
本研究旨在对 SFI 进行跨文化适应性改编，使其具有文化和语言等效性，生成西班牙版本（SFI-Sp）。
采用两阶段观察性研究。通过双向前翻译和向后翻译对 SFI 进行跨文化适应性改编，然后验证其心理测量特性。有各种脊柱疾病史（>12 周）的 226 名参与者完成了 SFI-Sp 及区域特异性量表：背部采用 Roland Morris 问卷（RMQ）和背痛指数（BADIX）；颈部采用 Neck Disability Index（NDI）；一般健康状况采用 EQ-5D 和 SF-12。全样本用于确定内部一致性、区域和健康状况的同时标准有效性、结构有效性和因子结构。一个亚组（n=51）用于确定七天时的可靠性。
SFI-Sp 表现出较高的内部一致性（α=0.85）和可靠性（r=0.96）。因子结构为一维，支持结构有效性。功能的特定标准有效性高，与 RMQ（r=0.79）相关，与 BADIX（r=0.59）中度相关，与 NDI（r=0.46）低度相关。对一般健康状况而言，与 EQ-5D 呈负相关（r=-0.42），与 SF-12 的身体和精神成分呈中等相关（r=-0.56 和 r=-0.48）。研究局限性包括缺乏其他心理测量特性（特别是反应性）的纵向数据。
SFI-Sp 被证明是一种有效的、可靠的脊柱区域结局测量工具。其心理测量特性与英文版相当，并得到了支持，但需要进一步的纵向研究。
