Purpose

The Knee Injury Osteoarthritis Outcome Score (KOOS)-Child questionnaire is one of the frequently child-friendly measures used in pediatric studies. The aim of this study was to transculturally adapt the Greek version of KOOS-Child and evaluate its clinimetric properties in children with knee disorders.

Methods

Children visiting the Outpatients Orthopaedic Clinic of a Greek Paediatric General Hospital were considered eligible if they were aged 8–14 years, had a knee soft tissue injury and associated physical limitations. The transcultural adaptation was based on a multistage backward translation approach. Participants completed the KOOS-Child at their first visit to the orthopedic specialist (baseline), 2 weeks and 3 months after baseline. Content validity of the KOOS-Child was evaluated using general QoL measures (KIDSCREEN and Kid-KINDL) and construct validity was explored by correlating relevant items. Responsiveness was evaluated according to the children’s response on the given orthopeadic treatment.

Results

Sample consisted of 59 children (30 males), aged: 11 ± 1.8 years. The KOOS-Child showed high internal consistency (Cronbach’s a: 0.80–0.96). Adequate convergent validity with > 75% relevant a priori hypotheses was confirmed. Construct validity was moderate to strong (Pearson’s r correlations between related KOOS and Kid-KINDL subdimensions: 0.54–0.62). KOOS and KIDSCREEN subdimensions correlations were fair (Pearson’s r correlations: 0.32–0.65). KOOS-Child’s diagnostic accuracy was high. Factor analysis extracted height factors accounting for 76.15% of the total variance, confirmed by the scree plot. Responsiveness was moderate to high with Cohen’s d from 0.6 to 1.4.

Conclusion

The Greek version of the KOOS-Child demonstrated excellent internal consistency, good construct validity, diagnostic accuracy and interpretability as well as good responsiveness. The measure could be used across Greek children with orthopaedic knee problems. Generalisability of findings is limited due to the relatively limited cohort.

Level of evidence

II.

中文翻译：

---

“希腊语KOOS-Child：患有膝部相关疾病的儿童的有效，特定疾病，诊断准确且反应迅速的PROM”。

目的

膝关节损伤性骨关节炎结果评分（KOOS）-儿童问卷是儿科研究中经常使用的对儿童友好的措施之一。这项研究的目的是跨文化适应希腊版本的KOOS-Child，并评估其在膝关节疾病患儿中的临床指标。

方法

年龄在8至14岁，膝盖软组织损伤和相关身体限制的儿童被认为符合希腊儿科总医院门诊骨科门诊的条件。跨文化改编是基于多阶段后向翻译方法的。参与者在基线后的2周和3个月首次拜访骨科专家（基线）时完成了KOOS-Child。使用常规QoL量度（KIDSCREEN和Kid-KINDL）评估KOOS-Child的内容效度，并通过关联相关项目探索构建效度。根据儿童对给定骨科治疗的反应来评估反应性。

结果

样本由59名儿童（30名男性）组成，年龄：11±1.8岁。KOOS-Child具有较高的内部一致性（Cronbach's a：0.80–0.96）。确认具有> 75％相关先验假设的充分收敛有效性。建构效度为中等至强（相关KOOS与Kid-KINDL子维度之间的皮尔森r相关性：0.54–0.62）。KOOS和KIDSCREEN子维度的相关性是公平的（Pearson的r相关性：0.32-0.65）。KOOS-Child的诊断准确性很高。因子分析提取的高度因子占总方差的76.15％，由scree图确认。响应度从中到高，科恩的d从0.6到1.4。

结论

希腊版本的KOOS-Child具有出色的内部一致性，良好的结构有效性，诊断准确性和可解释性以及良好的响应能力。该措施可用于患有骨科膝盖问题的希腊儿童。由于队列相对有限，结果的通用性受到限制。

证据水平

二。