Journal article
Minimal Clinically Important Difference and Substantial Clinical Benefit Values for a Pain Visual Analog Scale After Hip Arthroscopy
Arthroscopy, v 35(7), pp 2064-2069
Jul 2019
PMID: 31208920
Abstract
To define minimal clinically important difference (MCID) and substantial clinical benefit (SCB) values for a pain visual analog scale (VAS) in patients undergoing hip arthroscopy for femoroacetabular impingement or chondrolabral pathology.
This was a retrospective review of prospective collected data on patients having hip arthroscopy for femoroacetabular impingement and/or chondrolabral pathology. On initial assessment and follow-up between 335 and 395 days postsurgery, subjects completed a pain VAS and categorical self-rating of function. MCID was calculated using one-half the standard deviation (SD) of the change in 1-year pain VAS values. Receiver operator characteristic analysis was performed to determine SCB values. A change in SCB value was determined based on change in categorical self-rating of function to create "improved" and "not improved" groups. Absolute postoperative SCB scores were calculated to determine scores that would be associated with "normal" or "abnormal" function ratings.
Of 1,034 eligible patients, 733 (71%) met the inclusion criteria, with 537 (73%) women and 196 (27%) men having a mean age of 35.3 years (SD 13). At a mean of 352 (SD 21) days postsurgery, 536 (73%) were in the improved group and 197 (27%) in the not improved group. MCID was -15.0 mm. A change of -22.7 mm on the pain VAS was able to identify those that improved with high sensitivity (0.74) and specificity (0.63). Values of ≤10.4 mm and ≥29.0 mm were cutoffs identifying subjects that rated their function as normal or abnormal, respectively, with high sensitivity (0.79 and 0.76) and specificity (0.88 and 0.76).
This study provides surgeons with information to help interpret pain VAS values at a follow-up period ranging from 335 to 395 days with MCID and SCB values of -15.0 mm and -22.7 mm, respectively. Additionally, a patient who assesses a pain level at ≤10.4 mm is likely to have a normal rating of function, whereas a patient who assesses a pain level at ≥29.0 mm is likely to have an abnormal rating of function.
III, retrospective comparative study.
Metrics
Details
- Title
- Minimal Clinically Important Difference and Substantial Clinical Benefit Values for a Pain Visual Analog Scale After Hip Arthroscopy
- Creators
- RobRoy L Martin (Corresponding Author) - Duquesne UniversityBenjamin R Kivlan - Duquesne UniversityJohn J ChristoforettiAndrew B Wolff - Rush UniversityShane J Nho - Division of Sports Medicine, Department of Orthopedic Surgery, Hip Preservation Center, Rush University Medical Center, Chicago, Illinois, U.S.AJohn P Salvo, JrThomas J Ellis - Orthopedic One, Ohio Orthopedic Surgery Institute, Dublin Methodist Hospital, Columbus, Ohio, U.S.AGeoff Van Thiel - Rush University Medical CenterDean Matsuda - Rush UniversityDominic S Carreira - Peachtree Orthopaedic Clinic
- Publication Details
- Arthroscopy, v 35(7), pp 2064-2069
- Number of pages
- 6
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Orthopedic/Orthopaedic Surgery
- Web of Science ID
- WOS:000473264200023
- Scopus ID
- 2-s2.0-85067175371
- Other Identifier
- 991021860704304721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Orthopedics
- Sport Sciences
- Surgery