挪威版诺里奇髌骨不稳评分具有良好的效度和中等的可重复性。

IF 2 Q2 ORTHOPEDICS Journal of Experimental Orthopaedics Pub Date : 2025-01-10 DOI:10.1002/jeo2.70095

T. Hysing-Dahl, A. G. Faleide, L. H. Magnussen, E. Inderhaug

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摘要

目的：将诺里奇髌骨不稳定性（NPI）评分翻译并改编为挪威语，其次，检查挪威语版本（NPI- no）的心理测量特性。方法：按照国际标准翻译NPI。107例手术治疗复发性髌骨不稳的患者在术前和术后6个月完成了NPI-No、相关问卷调查和功能测试。效度（面孔效度、内容效度和构念效度）、内部一致性（Cronbach’s alpha [α]）、重测信度（类内相关系数[ICC]）、测量误差（测量标准误差[SEM]和个体[SDCind]和群体水平[SDCgroup]的最小可检测变化）和构念效度(假设检验；进行独立t检验（Pearson’s r）。结果：NPI-No具有良好的外观效度和内容效度。内部一致性满意（α = 0.88），重测信度中等，ICC2.1 0.65(95%可信区间= 0.47 ~ 0.77)，测量误差低（SEM = 7.8）。sdc组21.7分，sdc组2.8分。10个构念效度假设中有7个得到证实。虽然术前或术后没有天花板效应，但在6个月的随访中观察到实质性的地板效应（28%）。结论：NPI-No是评估挪威患者手术前后自我感觉髌骨不稳定性的有效方法。然而，可重复性仅为中等。本研究进一步增加了对NPI测量特性的认识。证据等级：二级。

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The Norwegian version of the Norwich Patellar Instability score has good validity and moderate reproducibility

Purpose

To translate and adapt the Norwich Patellar Instability (NPI) score into Norwegian, and second, to examine the psychometric properties of the Norwegian version (NPI-No).

Methods

NPI was translated according to international guidelines. A cohort of 107 patients surgically treated for recurrent patellofemoral instability completed NPI-No, related questionnaires and functional tests prior to and six months post-surgery. Validity (face, content and construct validity), internal consistency (Cronbach's alpha [α]), test–retest reliability (intraclass correlation coefficient [ICC]], measurement error (standard error of measurement [SEM] and smallest detectable change at individual [SDC_ind] and group level [SDC_group]) and construct validity (hypotheses testing; independent t tests, Pearson's r) were examined.

Results

NPI-No had good face and content validity. Internal consistency was satisfactory (α = 0.88), test–retest reliability was moderate ICC_2.1 0.65 (95% confidence interval = 0.47–0.77) and measurement error low (SEM = 7.8). SDC_ind was 21.7 points and SDC_group was 2.8. Seven of the 10 hypotheses about construct validity were confirmed. While there was no ceiling effect pre- or post-operatively, a substantial floor effect (28%) was observed at the 6-month follow-up.

Conclusion

The NPI-No is valid for assessment of self-perceived patellar instability before and after surgery in Norwegian patients. However, reproducibility was found to be only moderate. This study adds further knowledge about the measurement properties of the NPI.