PMID- 37651575 OWN - NLM STAT- MEDLINE DCOM- 20231201 LR - 20240416 IS - 2380-0194 (Electronic) IS - 2380-0186 (Linking) VI - 36 IP - 10 DP - 2023 Dec 1 TI - Preoperative Disability Influences Effectiveness of MCID and PASS in Predicting Patient Improvement Following Lumbar Spine Surgery. PG - E506-E511 LID - 10.1097/BSD.0000000000001517 [doi] AB - STUDY DESIGN: Retrospective cohort. SUMMARY OF BACKGROUND DATA: Although minimal clinically important difference (MCID) and patient acceptable symptom state (PASS) are utilized to interpret Oswestry Disability Index (ODI), it is unclear whether there is a clearly better metric between the two and if not, which metric should be utilized when. OBJECTIVE: To compare the characteristics of MCID and PASS when interpreting ODI after lumbar spine surgery. METHODS: Patients who underwent primary minimally invasive transforaminal lumbar interbody fusion or decompression were included. The ODI and global rating change data at 1 year were analyzed. The global rating change was collapsed to a dichotomous outcome variable-(a) improved, (b) not improved The sensitivity, specificity, positive predictive value and negative predictive value of MCID and PASS were calculated for the overall cohort and separately for patients with minimal, moderate, and severe preoperative disability. Two groups with patients who achieved PASS but not MCID and patients who achieved MCID but not PASS were analyzed. RESULTS: Two hundred twenty patients (mean age 62 y, 57% males) were included. PASS (86% vs. 69%) and MCID (88% vs. 63%) had significantly greater sensitivity in patients with moderate and severe preoperative disability, respectively. Nineteen percent of patients achieved PASS but not MCID and 10% of patients achieved MCID but not PASS, with the preoperative ODI being significantly greater in the latter. Most of these patients still reported improvement with no significant difference between the 2 groups (93% vs. 86%). CONCLUSION: Significant postoperative clinical improvement is most effectively assessed by PASS in patients with minimal or moderate preoperative disability and by MCID in patients with severe preoperative disability. Adequate interpretation of ODI using the PASS and MCID metrics warrants individualized application as their utility is highly dependent on the degree of preoperative disability. CI - Copyright (c) 2023 Wolters Kluwer Health, Inc. All rights reserved. FAU - Shahi, Pratyush AU - Shahi P AD - Hospital for Special Surgery. FAU - Subramanian, Tejas AU - Subramanian T AD - Hospital for Special Surgery. AD - Weill Cornell Medical College, New York, NY. FAU - Maayan, Omri AU - Maayan O AD - Hospital for Special Surgery. AD - Weill Cornell Medical College, New York, NY. FAU - Araghi, Kasra AU - Araghi K AD - Hospital for Special Surgery. FAU - Singh, Nishtha AU - Singh N AD - Hospital for Special Surgery. FAU - Singh, Sumedha AU - Singh S AD - Hospital for Special Surgery. FAU - Asada, Tomoyuki AU - Asada T AD - Hospital for Special Surgery. FAU - Tuma, Olivia AU - Tuma O AD - Hospital for Special Surgery. FAU - Korsun, Maximilian AU - Korsun M AD - Hospital for Special Surgery. FAU - Sheha, Evan AU - Sheha E AD - Hospital for Special Surgery. FAU - Dowdell, James AU - Dowdell J AD - Hospital for Special Surgery. FAU - Qureshi, Sheeraz A AU - Qureshi SA AD - Hospital for Special Surgery. AD - Weill Cornell Medical College, New York, NY. FAU - Iyer, Sravisht AU - Iyer S AD - Hospital for Special Surgery. AD - Weill Cornell Medical College, New York, NY. LA - eng PT - Journal Article DEP - 20230829 PL - United States TA - Clin Spine Surg JT - Clinical spine surgery JID - 101675083 SB - IM MH - Male MH - Humans MH - Middle Aged MH - Female MH - Treatment Outcome MH - *Minimal Clinically Important Difference MH - Retrospective Studies MH - Lumbar Vertebrae/surgery MH - Predictive Value of Tests MH - *Spinal Fusion COIS- S.A.Q.: Royalties: Stryker K2M, Globus Medical, Inc.; Globus Medical, Inc.: HS2, LLC; Private Investments: Tissue Differentiation Intelligence; Consulting: Stryker K2M, Globus Medical, Inc.; Speaking and/or Teaching Arrangements: AMOpportunities, Globus Medical, Inc.; Board of Directors: Society of Minimally Invasive Spine Surgery; Scientific Advisory Board/Other Office: International Society for the Advancement of Spine Surgery, Cervical Spine Research Society, Lumbar Spine Research Society, North American Spine Society, Association of Bone and Joint Surgeons, Simplify Medical, Inc., LifeLink.com Inc., Society of Minimally Invasive Spine Surgery, Minimally Invasive Spine Study Group, Spinal Simplicity, LLC, Contemporary Spine Surgery, Annals of Translational Medicine. The remaining authors declare no conflict of interest. EDAT- 2023/08/31 18:41 MHDA- 2023/12/01 06:45 CRDT- 2023/08/31 14:23 PHST- 2023/03/13 00:00 [received] PHST- 2023/06/19 00:00 [accepted] PHST- 2023/12/01 06:45 [medline] PHST- 2023/08/31 18:41 [pubmed] PHST- 2023/08/31 14:23 [entrez] AID - 01933606-990000000-00201 [pii] AID - 10.1097/BSD.0000000000001517 [doi] PST - ppublish SO - Clin Spine Surg. 2023 Dec 1;36(10):E506-E511. doi: 10.1097/BSD.0000000000001517. Epub 2023 Aug 29.