Chatterji R, Naylor J M, Harris I A, Armstrong E, Davidson E, Ekmejian R, Descallar J
South Western Sydney Clinical School, UNSW Australia, Liverpool, NSW, Australia.
Orthopaedic Department, Liverpool Hospital, Locked Bag 7103, Liverpool, BC, 1871, Australia.
Health Qual Life Outcomes. 2017 Jan 23;15(1):18. doi: 10.1186/s12955-017-0596-x.
To determine if the EuroQol Health Related Quality of Life survey produces equivalent results when administered by phone interview or patient-completed forms.
People awaiting hip or knee arthroplasty at a major metropolitan hospital participated. They were randomly assigned to receive the EuroQol Health Related Quality of Life survey via telephone, followed by a patient completed form 1 week later, or vice versa. Equivalence was determined using two one-sided tests (TOST) based on minimal clinically-important differences for the visual analogue scale (VAS) and the summary Utility Index. Cohen's Kappa scores were computed to determine agreement for the individual EuroQoL Likert scale items.
Seventy-six from 90 (84%) participants completed the survey twice. Based on limits set at ±7 and ±0.11 for the VAS and Utility Index, respectively, equivalence was established between the two methods of administration for both the VAS (mean difference 0.05 [90% CI -3.76-3.67]) and the Utility Index (mean difference 0.06 [90% CI 0.02-0.11]). Varying levels of agreement, ranging from slight to substantial (κ = 0.17-0.67), were demonstrated for the individual health domains. The order of telephone and patient-completed survey administration had no significant effect on results.
Equivalent results are obtained between telephone and patient-completed administration for the VAS and Utility Index of the EuroQol Survey in people with advanced hip or knee osteoarthritis. The limits of agreement for the individual health domains vary which prevents the accurate interpretation of real change in these items across modes.
确定通过电话访谈或患者填写表格进行欧洲五维度健康量表（EuroQol）健康相关生活质量调查时，是否会产生等效结果。
在一家大型都市医院等待髋关节或膝关节置换术的患者参与了研究。他们被随机分配，一组先通过电话接受欧洲五维度健康量表健康相关生活质量调查，1周后再填写患者完成表格；另一组则相反。基于视觉模拟量表（VAS）和综合效用指数的最小临床重要差异，使用双侧检验（TOST）来确定等效性。计算科恩kappa系数以确定欧洲五维度健康量表李克特量表各项目的一致性。
90名参与者中有76名（84%）完成了两次调查。分别基于为VAS和效用指数设定的±7和±0.11的界限，两种施测方法在VAS（平均差异0.05 [90%可信区间 -3.76 - 3.67]）和效用指数（平均差异0.06 [90%可信区间0.02 - 0.11]）方面均确立了等效性。各个健康领域的一致性水平各不相同，从轻微到高度一致（κ = 0.17 - 0.67）。电话调查和患者填写调查的施测顺序对结果没有显著影响。
对于晚期髋或膝骨关节炎患者，欧洲五维度健康量表调查的VAS和效用指数在电话施测和患者填写施测之间可获得等效结果。各个健康领域的一致性界限各不相同，这妨碍了对这些项目在不同方式下真实变化的准确解读。
