Purpose

The purpose of this study was a cross-cultural adaptation of the Spine Functional Index to produce a Polish version (SFI-PL). Further, the psychometric properties were evaluated with standardized criteria patient reported outcome measures (PROMs) in a symptomatic Polish spine population.

Methods

Linguistic adaptation complied with the International Society for Pharmacoeconomics and Outcomes Research (ISPOR) guidelines to produce the SFI-PL. Subjects with spine conditions, all areas and multi-area, were recruited from a Polish Specialist Hospital (n = 225, age = 45.7 ± 16.0 years, range 18–87, female = 60%, symptoms duration = 13.93 ± 27.56 weeks, range 5–84). Baseline internal consistency, reliability and validity were examined and included the SFI-PL, Oswestry Disability Index (ODI), Neck Disability Index (NDI), EuroQol 5 Dimensions, 5-level version (EQ-5D-5L) and an 11-point pain Numerical Rating Scale (NRS) with retest at 3–7 days (= 5 days). Practicality for readability was considered within the face and content validity and completion and scoring time calculated.

Results

Statistical analysis showed excellent internal consistency (α = 0.90) and high test–retest reliability (ICC = 0.98). The error score was determined with the SEM = 3.14 (MDC 90% CI = 7.33%). The construct validity analysis demonstrated strong correlations between the SFI-PL, the NDI (r = 0.73) and the ODI (r = 0.82); moderate with the EQ index value (0.70) and EQ-VAS (r = 0.56). Time to complete (229 s) and score (27 s) were determined.

Conclusions

The SFI-PL is a psychometrically sound PROM for Polish-speaking patients with spine conditions. The results support previous findings from the original—English and six other language versions for internal consistency, reliability, measurement error and validity.

Graphic abstract

These slides can be retrieved under Electronic Supplementary Material.

中文翻译：

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波兰文版《脊柱功能指数》的跨文化适应和验证。

目的

这项研究的目的是对脊柱功能指数进行跨文化调整，以产生波兰语版本（SFI-PL）。此外，对有症状的波兰脊柱人群采用标准化标准评估了患者的心理测量指标（PROM）。

方法

语言适应符合国际药物经济学和结果研究协会（ISPOR）的指导方针，以生产SFI-PL。从波兰专科医院（n  = 225，年龄= 45.7±16.0岁，年龄18-87，女性= 60％，症状持续时间= 13.93±27.56周，范围）招募患有脊柱疾病，所有区域和多个区域的受试者5–84）。检查了基线内部一致性，可靠性和有效性，包括SFI-PL，Oswestry残疾指数（ODI），颈部残疾指数（NDI），EuroQol 5尺寸，5级版本（EQ-5D-5L）和11点疼痛数字评分量表（NRS）在3–7天（= 5天）进行复测。在面部和内容的有效性，完成度和计分时间中考虑了可读性的实用性。

结果

统计分析显示出色的内部一致性（α  = 0.90）和高的重测可靠性（ICC = 0.98）。通过SEM = 3.14（MDC 90％CI = 7.33％）确定错误评分。构造效度分析表明SFI-PL，NDI（r  = 0.73）和ODI（r  = 0.82）之间有很强的相关性。使用EQ指数值（0.70）和EQ-VAS（r  = 0.56）适度。确定完成时间（229 s）和得分（27 s）。

结论

SFI-PL是一种心理健康的PROM，适用于讲波兰语的脊柱疾病患者。结果支持原始的英语和其他六种语言版本在内部一致性，可靠性，测量错误和有效性方面的先前发现。

图形摘要

这些幻灯片可以在电子补充材料下找到。