PMID- 33746073 OWN - NLM STAT- MEDLINE DCOM- 20220419 LR - 20220606 IS - 1877-0568 (Electronic) IS - 1877-0568 (Linking) VI - 108 IP - 2 DP - 2022 Apr TI - Establishing minimal clinically important difference for the UCLA and ASES scores after rotator cuff repair. PG - 102894 LID - S1877-0568(21)00113-4 [pii] LID - 10.1016/j.otsr.2021.102894 [doi] AB - BACKGROUND/HYPOTHESIS: Minimal clinically important difference (MCID) is a vital tool in the analysis of clinical results. It allows the determination of clinical relevance of statistical data. Our hypothesis was that specific differences between preoperative and postoperative scores would be able to accurately predict patient perception of improvement and satisfaction as reflected by anchor and distribution-based questions. METHODS: Retrospective cohort with patients that underwent rotator cuff repair. We evaluated the University of California at Los Angeles Shoulder Rating Scale (UCLA) and the American Shoulder and Elbow Surgeons Assessment Form (ASES) before and 12-months after surgery. Anchor-based, distribution-based and minimum detectable change (MDC) approaches were utilized. RESULTS: We evaluated 289 shoulders. The MCID for the UCLA scale was 4.5 points using the anchor method, 2.5 by the distribution method and 3.6 by MDC. Patients with a baseline score>20 presented a lower MCID (1.5, 1.1 and 1.7, respectively). For the ASES score, the MCID was 6.1 by the anchor method, 10.5 based on the distribution method and 26.3 by MDC. In the group of patients above the 60 point cutoff, the obtained values were 2.4, 4.9 and 13.6, respectively. CONCLUSION: The mean MCID value for the UCLA shoulder score is 3.5 points, ranging from 2.5 points (distribution method) to 4.5 points (anchor method). The mean MCID value for the ASES score was 15.2 points, ranging from 6.1 (anchor method) to 26.3 (MDC). Patients groups presenting with higher preoperative scores showed lower MCID values. This fact needs to be considered in postoperative comparisons between treatment groups. LEVEL OF EVIDENCE: Basic Science Study, Validation of Outcomes Instruments/Classification Systems. CI - Copyright (c) 2021 Elsevier Masson SAS. All rights reserved. FAU - Malavolta, Eduardo A AU - Malavolta EA AD - Orthopedic and Traumatology Departament, Medicine School of University of Sao Paulo, Rua Capote Valente 361, apto 212, 05409-001 Sao Paulo, SP, Brazil. Electronic address: eduardomalavolta@gmail.com. FAU - Yamamoto, Gustavo J AU - Yamamoto GJ AD - Orthopedic and Traumatology Departament, Medicine School of University of Sao Paulo, Rua Capote Valente 361, apto 212, 05409-001 Sao Paulo, SP, Brazil. FAU - Bussius, Daniel T AU - Bussius DT AD - Orthopedic and Traumatology Departament, Medicine School of University of Sao Paulo, Rua Capote Valente 361, apto 212, 05409-001 Sao Paulo, SP, Brazil. FAU - Assuncao, Jorge H AU - Assuncao JH AD - Orthopedic and Traumatology Departament, Medicine School of University of Sao Paulo, Rua Capote Valente 361, apto 212, 05409-001 Sao Paulo, SP, Brazil. FAU - Andrade-Silva, Fernando B AU - Andrade-Silva FB AD - Orthopedic and Traumatology Departament, Medicine School of University of Sao Paulo, Rua Capote Valente 361, apto 212, 05409-001 Sao Paulo, SP, Brazil. FAU - Gracitelli, Mauro E C AU - Gracitelli MEC AD - Orthopedic and Traumatology Departament, Medicine School of University of Sao Paulo, Rua Capote Valente 361, apto 212, 05409-001 Sao Paulo, SP, Brazil. FAU - Ferreira Neto, Arnaldo A AU - Ferreira Neto AA AD - Orthopedic and Traumatology Departament, Medicine School of University of Sao Paulo, Rua Capote Valente 361, apto 212, 05409-001 Sao Paulo, SP, Brazil. LA - eng PT - Journal Article DEP - 20210318 PL - France TA - Orthop Traumatol Surg Res JT - Orthopaedics & traumatology, surgery & research : OTSR JID - 101494830 SB - IM MH - Arthroscopy MH - Humans MH - *Minimal Clinically Important Difference MH - Retrospective Studies MH - Rotator Cuff/surgery MH - *Rotator Cuff Injuries/surgery MH - Treatment Outcome OTO - NOTNLM OT - American Shoulder and Elbow Surgeons Assessment Form OT - Anchor-based methods OT - Distribution methods OT - Minimal clinically important difference (MCID) OT - University of California at Los Angeles Shoulder Rating Scale EDAT- 2021/03/23 06:00 MHDA- 2022/04/20 06:00 CRDT- 2021/03/22 06:07 PHST- 2020/09/23 00:00 [received] PHST- 2021/03/01 00:00 [revised] PHST- 2021/03/12 00:00 [accepted] PHST- 2021/03/23 06:00 [pubmed] PHST- 2022/04/20 06:00 [medline] PHST- 2021/03/22 06:07 [entrez] AID - S1877-0568(21)00113-4 [pii] AID - 10.1016/j.otsr.2021.102894 [doi] PST - ppublish SO - Orthop Traumatol Surg Res. 2022 Apr;108(2):102894. doi: 10.1016/j.otsr.2021.102894. Epub 2021 Mar 18.