Confirmatory factor analysis of VISA-P scale and measurement invariance across sexes in athletes with patellar tendinopathy  

作　　者：Sergio Hernandez-Sanchez Ferran Abat María D.Hidalgo Antonio I.Cuesta-Vargas Victor Segarra Jose M.Sanchez-Ibanez Antonia Gomez-Conesa 

机构地区：[1]Department of Pathology and Surgery,Physiotherapy Area,Miguel Hernandez University,Valencia 03550,Spain [2]Sports Orthopaedic Surgeon,ReSport Clinic,Barcelona 08017,Spain [3]Department of Basic Psychology and Methodology,University of Murcia,Murcia 30100,Spain [4]Department of Physiotherapy,Faculty of Health Sciences,University of Malaga,Malaga 29009,Spain

出　　处：《Journal of Sport and Health Science》2017年第3期365-371,共7页运动与健康科学（英文）

摘　　要：Background:The Victorian Institute of Sport Assessment–Patella(VISA-P) scale is the most condition-specific patient-reported outcome measure used to assess symptom severity in athletes with patellar tendinopathy.Previous exploratory factor analyses have been conducted to evaluate the scale's dimensionality,with inconsistent results,and the factor structure of the scale remains unclear.The aims of the present study were to determine the factorial structure of the VISA-P scale using confirmatory factor analysis(CFA) and test measurement invariance across sexes.Methods:The study included a convenience sample of 249 Spanish athletes with patellar tendinopathy.CFA was performed to assess factorial validity.Hypothesized 1-and 2-factor models were tested.Measurement invariance across sexes was evaluated via multi-group CFA with several fit indices using EQS 6.1 software.Results:The internal consistency coefficient was 0.74.Several CFA models were examined and the 1-factor model in which errors for Items 7 and8 were correlated showed acceptable fit in terms of comparative fit index(CFI) and goodness-of-fit index(GFI) statistics(CFI = 0.93;GFI = 0.94;standardized root mean square residual = 0.06;root mean square error of approximation = 0.10;90% confidence interval:0.08–0.13).This model was invariant across sexes.Conclusion:The 1-factor model of the Spanish version of the VISA-P scale(VISA-P-Sp) in which errors for Items 7 and 8 were correlated demonstrated relative fit in CFA.Scores obtained via VISA-P-Sp can be compared between men and women without sexes bias.Further studies should examine the VISA-P scale and other single-score patient-reported outcome measures concurrently.Background：The Victorian Institute of Sport Assessment-Patella（VISA-P） scale is the most condition-specific patient-reported outcome measure used to assess symptom severity in athletes with patellar tendinopathy.Previous exploratory factor analyses have been conducted to evaluate the scale＇s dimensionality,with inconsistent results,and the factor structure of the scale remains unclear.The aims of the present study were to determine the factorial structure of the VISA-P scale using confirmatory factor analysis（CFA） and test measurement invariance across sexes.Methods：The study included a convenience sample of 249 Spanish athletes with patellar tendinopathy.CFA was performed to assess factorial validity.Hypothesized 1-and 2-factor models were tested.Measurement invariance across sexes was evaluated via multi-group CFA with several fit indices using EQS 6.1 software.Results：The internal consistency coefficient was 0.74.Several CFA models were examined and the 1-factor model in which errors for Items 7 and8 were correlated showed acceptable fit in terms of comparative fit index（CFI） and goodness-of-fit index（GFI） statistics（CFI = 0.93;GFI = 0.94;standardized root mean square residual = 0.06;root mean square error of approximation = 0.10;90% confidence interval：0.08-0.13）.This model was invariant across sexes.Conclusion：The 1-factor model of the Spanish version of the VISA-P scale（VISA-P-Sp） in which errors for Items 7 and 8 were correlated demonstrated relative fit in CFA.Scores obtained via VISA-P-Sp can be compared between men and women without sexes bias.Further studies should examine the VISA-P scale and other single-score patient-reported outcome measures concurrently.

关 键 词：Jumper＇s knee Measurement invariance Patient-reported outcome measure Structural validity 

分 类 号：R873[医药卫生—运动医学]