PMID- 32205700 OWN - NLM STAT- MEDLINE DCOM- 20201208 LR - 20210115 IS - 1528-1159 (Electronic) IS - 0362-2436 (Linking) VI - 45 IP - 18 DP - 2020 Sep 15 TI - Evaluating the Minimal Clinically Important Difference of EQ-5D-3L in Patients With Degenerative Lumbar Spinal Stenosis: A Swiss Prospective Multicenter Cohort Study. PG - 1309-1316 LID - 10.1097/BRS.0000000000003501 [doi] AB - STUDY DESIGN: Analysis of a prospective, multicenter cohort study. OBJECTIVE: The aim of our study was to compare thresholds of published minimal clinically important differences (MCID) for the three-level EuroQol-5D health survey (EQ-5D-3L) summary index (range -0.53 to 1.00) with our anchor-based estimate and evaluate how useful these thresholds are in determining treatment success in patients undergoing surgery for degenerative lumbar spinal stenosis (DLSS). SUMMARY OF BACKGROUND DATA: MCID values for EQ-5D-3L are specific to the underlying disease and only three studies have been published for DLSS patients reporting different values. METHODS: Patients of the multicenter Lumbar Stenosis Outcome Study with confirmed DLSS undergoing first-time decompression or fusion surgery with 12-month follow-up were enrolled in this study. To calculate MCID we used the Spinal Stenosis Measure satisfaction subscale as anchor. RESULTS: For this study, 364 patients met the inclusion criteria; of these, 196 were very satisfied, 72 moderately satisfied, 43 somewhat satisfied, and 53 unsatisfied 12 months after surgery. The MCID calculation estimated for EQ-5D-3L a value of 0.19. Compared with published MCID values (ranging from 0.30 to 0.52), our estimation is less restrictive. CONCLUSIONS: In patients with LSS undergoing surgery, we estimated an MCID value for EQ-5D-3L summary index of 0.19 with the help of the average change anchor-based method, which we find to be the most suitable method for assessing patient change scores. LEVEL OF EVIDENCE: 3. FAU - Burgstaller, Jakob M AU - Burgstaller JM AD - Horten Centre for Patient Oriented Research and Knowledge Transfer, University of Zurich, Zurich, Switzerland. FAU - Wertli, Maria M AU - Wertli MM AD - Horten Centre for Patient Oriented Research and Knowledge Transfer, University of Zurich, Zurich, Switzerland. AD - Division of General Internal Medicine, Bern University Hospital, Bern University, Bern, Switzerland. FAU - Ulrich, Nils H AU - Ulrich NH AD - Horten Centre for Patient Oriented Research and Knowledge Transfer, University of Zurich, Zurich, Switzerland. FAU - Pichierri, Giuseppe AU - Pichierri G AD - Horten Centre for Patient Oriented Research and Knowledge Transfer, University of Zurich, Zurich, Switzerland. FAU - Brunner, Florian AU - Brunner F AD - Department of Physical Medicine and Rheumatology, Balgrist University Hospital, Zurich, Switzerland. FAU - Farshad, Mazda AU - Farshad M AD - Spine Division, Balgrist University Hospital, Zurich, Switzerland. FAU - Porchet, Francois AU - Porchet F AD - Spine Unit, Department of Orthopedic- and Neurosurgery, Schulthess Clinic, Zurich, Switzerland. FAU - Steurer, Johann AU - Steurer J AD - Horten Centre for Patient Oriented Research and Knowledge Transfer, University of Zurich, Zurich, Switzerland. FAU - Gravestock, Isaac AU - Gravestock I AD - Horten Centre for Patient Oriented Research and Knowledge Transfer, University of Zurich, Zurich, Switzerland. CN - LSOS Study Group LA - eng PT - Journal Article PT - Multicenter Study PL - United States TA - Spine (Phila Pa 1976) JT - Spine JID - 7610646 SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Cohort Studies MH - Female MH - Health Surveys/methods/*standards MH - Humans MH - Male MH - Middle Aged MH - *Minimal Clinically Important Difference MH - Pain Measurement/methods/standards MH - Prospective Studies MH - Quality of Life MH - Spinal Stenosis/diagnosis/*epidemiology/*surgery MH - Switzerland/epidemiology MH - Treatment Outcome EDAT- 2020/03/25 06:00 MHDA- 2020/12/15 06:00 CRDT- 2020/03/25 06:00 PHST- 2020/03/25 06:00 [pubmed] PHST- 2020/12/15 06:00 [medline] PHST- 2020/03/25 06:00 [entrez] AID - 00007632-202009150-00019 [pii] AID - 10.1097/BRS.0000000000003501 [doi] PST - ppublish SO - Spine (Phila Pa 1976). 2020 Sep 15;45(18):1309-1316. doi: 10.1097/BRS.0000000000003501.