PMID- 29471221 OWN - NLM STAT- MEDLINE DCOM- 20181113 LR - 20220408 IS - 2468-7812 (Electronic) IS - 2468-7812 (Linking) VI - 35 DP - 2018 Jun TI - Estimating the Minimal Important Difference for the Western Ontario Rotator Cuff Index (WORC) in adults with shoulder pain associated with partial-thickness rotator cuff tears. PG - 30-33 LID - S2468-7812(18)30043-2 [pii] LID - 10.1016/j.msksp.2018.02.003 [doi] AB - BACKGROUND: Knowledge about Minimal Important Differences (MIDs) is essential for the interpretation of continuous outcomes, especially patient-reported outcome measures (PROMS). OBJECTIVE: The aim of this study was to estimate the MID for the Western Ontario Rotator Cuff Index (WORC: score 0 (best) to 2100 (worst disability)) in adults with shoulder pain associated with partial-thickness rotator cuff tears, 'symptomatic PTTs', undergoing conservative treatment with physiotherapy. DESIGN: A prospectively-designed anchor-based MID analysis using data from a prospective prognostic study with a three-month follow-up conducted within an outpatient care setting in Germany. METHODS: The MID was estimated using data from 64 adults with atraumatic symptomatic PTTs who underwent three months of conservative treatment with physiotherapy. The anchor was a seven-point Global Perceived Change (GPC) scale. RESULTS: Based on a definition of the MID being the threshold of "being (at least slightly) improved" with a probability nearest to 0.90 (i.e. 9 of 10 patients achieving the MID), the MID for the WORC was estimated as -300 for 'improved' shoulder-related disability in 9 out of 10 patients (95% CI 8 out of 10 patients to everyone) undergoing three months of exercise-based physiotherapy for symptomatic PTTs. CONCLUSIONS: This is the first published MID estimate for the WORC in adults with symptomatic PTTs of the rotator cuff undergoing typical treatment comprising conservative treatment with physiotherapy. The conceptual framework for interpretation facilitates its use in similar clinical contexts. CI - Copyright (c) 2018. Published by Elsevier Ltd. FAU - Braun, Cordula AU - Braun C AD - School of Health and Social Care, Teesside University, Middlesbrough, United Kingdom; Bereich Gesundheit/Physiotherapie, hochschule 21, Buxtehude, Germany. Electronic address: braun@hs21.de. FAU - Handoll, Helen H AU - Handoll HH AD - School of Health and Social Care, Teesside University, Middlesbrough, United Kingdom. LA - eng PT - Journal Article DEP - 20180212 PL - Netherlands TA - Musculoskelet Sci Pract JT - Musculoskeletal science & practice JID - 101692753 SB - IM MH - Adult MH - Aged MH - Ambulatory Care MH - Cohort Studies MH - *Disability Evaluation MH - Exercise Therapy/*methods MH - Female MH - Germany MH - Humans MH - Male MH - Middle Aged MH - Multivariate Analysis MH - *Pain Measurement MH - Patient Reported Outcome Measures MH - Prospective Studies MH - Range of Motion, Articular/physiology MH - Risk Assessment MH - Rotator Cuff/*pathology MH - Rotator Cuff Injuries/classification/*diagnosis/*rehabilitation MH - Shoulder Pain/diagnosis/rehabilitation MH - Treatment Outcome OTO - NOTNLM OT - Minimal clinically important difference OT - Patient reported outcome measures OT - Physical therapy modalities OT - Shoulder pain EDAT- 2018/02/23 06:00 MHDA- 2018/11/14 06:00 CRDT- 2018/02/23 06:00 PHST- 2017/11/23 00:00 [received] PHST- 2018/02/05 00:00 [revised] PHST- 2018/02/09 00:00 [accepted] PHST- 2018/02/23 06:00 [pubmed] PHST- 2018/11/14 06:00 [medline] PHST- 2018/02/23 06:00 [entrez] AID - S2468-7812(18)30043-2 [pii] AID - 10.1016/j.msksp.2018.02.003 [doi] PST - ppublish SO - Musculoskelet Sci Pract. 2018 Jun;35:30-33. doi: 10.1016/j.msksp.2018.02.003. Epub 2018 Feb 12.