PMID- 29978346 OWN - NLM STAT- MEDLINE DCOM- 20181211 LR - 20220409 IS - 1573-2649 (Electronic) IS - 0962-9343 (Linking) VI - 27 IP - 11 DP - 2018 Nov TI - Psychometric properties of the EQ-5D-5L in patients with hip or knee osteoarthritis: reliability, validity and responsiveness. PG - 2897-2908 LID - 10.1007/s11136-018-1929-x [doi] AB - PURPOSE: To study the psychometric properties, including reliability, validity and responsiveness, of the Spanish EQ-5D-5L questionnaire for patients with hip or knee osteoarthritis (OA). METHODS: We included 758 patients with hip or knee OA who completed the EQ-5D-5L and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) at baseline, of whom 644 also did 6 months later. The EQ-5D-5L contains five questions from which a utility index is derived. The WOMAC covers three dimensions: pain, stiffness and physical function. Floor and ceiling effects were calculated. Reliability was assessed using Cronbach's alpha. Convergent validity was tested using the Spearman correlation coefficient between EQ-5D-5L and WOMAC. We examined known-groups validity by comparing the EQ-5D-5L between subgroups defined by WOMAC scores using ANOVA or the Kruskal-Wallis test. Effect sizes were calculated to assess responsiveness, and minimal clinically important difference (MCID) was estimated. RESULTS: The EQ-5D-5L showed minimal floor and ceiling effects (< 3%). Cronbach's alpha was 0.86. The EQ-5D-5L index was strongly correlated with WOMAC pain and function scores (- 0.688 and - 0.782). Patients with higher WOMAC scores had significantly (p < 0.0001) lower EQ-5D-5L index. The 20.19% had hip or knee replacement during the follow-up. Effect sizes were small among non-surgical patients, but > 0.80 among "improved" surgical patients, being the MCID for improvement 0.32 points. CONCLUSIONS: The results support the reliability, validity and responsiveness of the EQ-5D-5L, overcoming the limitations of the EQ-5D-3L in these patients. Therefore, the EQ-5D-5L could be very useful as an outcome measure, at least in patients with hip or knee OA. FAU - Bilbao, Amaia AU - Bilbao A AUID- ORCID: 0000-0002-2202-0753 AD - Research Unit, Basurto University Hospital (Osakidetza), Avda. Montevideo, 18, 48013, Bilbao, Bizkaia, Spain. amaia.bilbaogonzalez@osakidetza.eus. AD - Health Service Research Network on Chronic Diseases (REDISSEC), Bilbao, Spain. amaia.bilbaogonzalez@osakidetza.eus. FAU - Garcia-Perez, Lidia AU - Garcia-Perez L AD - Health Service Research Network on Chronic Diseases (REDISSEC), Bilbao, Spain. AD - Canary Foundation for Health Research (FUNCANIS), La Laguna, Tenerife, Spain. FAU - Arenaza, Juan Carlos AU - Arenaza JC AD - Health Service Research Network on Chronic Diseases (REDISSEC), Bilbao, Spain. AD - Traumatology and Orthopedic Surgery Service, Basurto University Hospital (Osakidetza), Bilbao, Bizkaia, Spain. FAU - Garcia, Isidoro AU - Garcia I AD - Traumatology and Orthopedic Surgery Service, Galdakao-Usansolo Hospital (Osakidetza), Galdakao, Bizkaia, Spain. FAU - Ariza-Cardiel, Gloria AU - Ariza-Cardiel G AD - Health Service Research Network on Chronic Diseases (REDISSEC), Bilbao, Spain. AD - Multiprofessional Teaching Unit of Primary and Community Care, Primary Healthcare Management, Madrid Health Service, Madrid, Spain. FAU - Trujillo-Martin, Elisa AU - Trujillo-Martin E AD - Rheumatology Service, University Hospital of the Canary Islands, Tenerife, Spain. FAU - Forjaz, Maria Joao AU - Forjaz MJ AD - Health Service Research Network on Chronic Diseases (REDISSEC), Bilbao, Spain. AD - Carlos III Health Institute, National School of Public Health, Madrid, Spain. FAU - Martin-Fernandez, Jesus AU - Martin-Fernandez J AD - Health Service Research Network on Chronic Diseases (REDISSEC), Bilbao, Spain. AD - Villamanta Clinic, Navalcarnero Health Centre, Madrid Health Service, Madrid, Spain. AD - Health Sciences Faculty, Rey Juan Carlos University, Madrid, Spain. LA - eng GR - PI13/00560/Instituto de Salud Carlos III/ GR - PI13/00518/Instituto de Salud Carlos III/ GR - PI13/00648/Instituto de Salud Carlos III/ PT - Journal Article DEP - 20180705 PL - Netherlands TA - Qual Life Res JT - Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation JID - 9210257 SB - IM MH - Aged MH - Female MH - Humans MH - Male MH - *Minimal Clinically Important Difference MH - Osteoarthritis, Hip/*diagnosis MH - Osteoarthritis, Knee/*diagnosis MH - Outcome Assessment, Health Care MH - Pain Measurement/*methods MH - Psychometrics/*methods MH - Quality of Life/*psychology MH - Reproducibility of Results MH - Surveys and Questionnaires OTO - NOTNLM OT - EQ-5D-5L OT - Minimal clinically important difference OT - Osteoarthritis OT - Psychometric properties OT - Utility index EDAT- 2018/07/07 06:00 MHDA- 2018/12/12 06:00 CRDT- 2018/07/07 06:00 PHST- 2018/07/03 00:00 [accepted] PHST- 2018/07/07 06:00 [pubmed] PHST- 2018/12/12 06:00 [medline] PHST- 2018/07/07 06:00 [entrez] AID - 10.1007/s11136-018-1929-x [pii] AID - 10.1007/s11136-018-1929-x [doi] PST - ppublish SO - Qual Life Res. 2018 Nov;27(11):2897-2908. doi: 10.1007/s11136-018-1929-x. Epub 2018 Jul 5.