Reliability, validity, and minimal clinically important differences for the Thai-version of the Aberdeen Varicose Vein Questionnaire (AVVQ-Thai) in patients with chronic venous disease

Boonying Siribumrungwong, Pinit Noorit, Termpong Reanpang, Chawanan Pornwaragorn, Chumpon Wilasrusmee, Suchat Wongsuwanich, Kanoklada Srikuea, Saritphat Orrapin, Thoetphum Benyakorn, Andrew Malcolm Garratt, Kittipan Rerkaserm
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Abstract

Background Patient-reported outcome measures (PROMs) are essential for assessing the health of patients with chronic venous disease (CVD). Therefore, we aimed to translate the Aberdeen Varicose Vein Questionnaire into Thai language (AVVQ-Thai) and evaluate its reliability and validity. Minimal clinically important differences (MCID) of the AVVQ-Thai also be estimated. Methods International standards for PROM translation were followed including the forward-backwards translation of the AVVQ. Patients with Clinical-Etiology-Anatomy-Pathophysiology (CEAP) C2-C6 with truncal reflux were prospectively included. Venous interventions were used to treat reflux and varicosities. Patients’ characteristics, venous clinical severity scores (VCSS), EuroQol EQ-5D, and AVVQ-Thai were collected pre- and one-month post-intervention. AVVQ-Thai was also collected one to two weeks after the initial visit by reply-paid postal questionnaire. Results The study included 119 patients (30% C2, 29% C3, 28% C4, 11% C5, and 2% C6). The AVVQ-Thai had good internal consistency with Cronbach’s alpha of 0.783 and moderate reliability with the intraclass correlation coefficient of 0.67 (95%CI: 0.50, 0.79). The AVVQ-Thai was significantly correlated with VCSS and was able to discriminate patients with different levels of health problems as assessed by EQ-5D at both pre-and post-intervention, demonstrating good construct and discriminative validity. The median AVVQ scores improved significantly after intervention from 15.4 (IQR 8.3, 24.2) to 4.2 (IQR 1.3, 8.4) in C2-C3, and 18.9 (IQR 14.1, 25.5) to 7.3 (IQR 4.6, 16.3) in C4-C6. The MCID of the AVVQ was 6.21 on the 0-100 scale, which equates to the level of difference necessary to be clinically meaningful. Conclusions AVVQ-Thai has satisfactory evidence for internal consistency, reliability, validity, and responsiveness to change and is recommended for application in Thailand.
泰语版阿伯丁静脉曲张问卷(AVVQ-Thai)在慢性静脉疾病患者中的可靠性、有效性和最小临床重要差异
背景 患者报告结果测量法(PROM)对于评估慢性静脉疾病(CVD)患者的健康状况至关重要。因此,我们旨在将香港仔静脉曲张问卷翻译成泰语(AVVQ-Thai),并评估其可靠性和有效性。此外,还将估算 AVVQ-Thai 的最小临床重要差异 (MCID)。方法 遵循 PROM 翻译的国际标准,包括 AVVQ 的正反向翻译。前瞻性地纳入了临床-病因-解剖-病理生理学(CEAP)C2-C6 伴有截流的患者。采用静脉介入治疗反流和静脉曲张。在干预前和干预后一个月收集患者的特征、静脉临床严重程度评分(VCSS)、EuroQol EQ-5D和AVVQ-Thai。此外,还在首次就诊后一至两周通过付费邮寄问卷的方式收集 AVVQ-Thai。结果 该研究包括 119 名患者(30% C2、29% C3、28% C4、11% C5 和 2% C6)。AVVQ-Thai 具有良好的内部一致性(Cronbach's alpha 为 0.783)和中等可靠性(类内相关系数为 0.67(95%CI:0.50,0.79))。泰式 AVVQ 与 VCSS 显著相关,并能区分干预前和干预后 EQ-5D 评估的不同健康问题程度的患者,显示出良好的构建和区分效度。干预后,C2-C3 的 AVVQ 中位数得分从 15.4(IQR 8.3,24.2)明显降低到 4.2(IQR 1.3,8.4),C4-C6 的 AVVQ 中位数得分从 18.9(IQR 14.1,25.5)明显降低到 7.3(IQR 4.6,16.3)。AVVQ 的 MCID(0-100 分)为 6.21,相当于具有临床意义的必要差异水平。结论 AVVQ-Thai 在内部一致性、可靠性、有效性和对变化的反应性方面都有令人满意的证据,建议在泰国应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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