PMID- 30657002 OWN - NLM STAT- MEDLINE DCOM- 20210507 LR - 20210507 IS - 1477-0970 (Electronic) IS - 1352-4585 (Print) IS - 1352-4585 (Linking) VI - 26 IP - 4 DP - 2020 Apr TI - Minimal clinically important difference of improvement on the Arm Function in Multiple Sclerosis Questionnaire (AMSQ). PG - 505-508 LID - 10.1177/1352458518823489 [doi] AB - BACKGROUND: The Arm Function in Multiple Sclerosis Questionnaire (AMSQ) has been developed to assess upper extremity function of patients with multiple sclerosis (MS). A minimal clinically important difference (MCID) value has not been determined yet. OBJECTIVE: The objective of this study is to determine an MCID for AMSQ. METHODS: We used the sensitivity- and specificity-based approach with dichotomized global perceived effect as an anchor. RESULTS: The receiver operating characteristic (ROC) curve yielded an optimal threshold value of 14.5 (sensitivity 0.68 and specificity 0.79). The area under the ROC curve value was 0.77. CONCLUSION: We identified an MCID of 15 points for the AMSQ (range 31-186). FAU - van Munster, Caspar Ep AU - van Munster CE AUID- ORCID: 0000-0001-8701-5413 AD - Department of Neurology, Amsterdam Neuroscience, MS Center Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands. FAU - Kaya, Levent AU - Kaya L AD - Department of Neurology, Amsterdam Neuroscience, MS Center Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands. FAU - Obura, Morgan AU - Obura M AD - Department of Epidemiology and Biostatistics, Amsterdam Public Health Research Institute, Amsterdam UMC, Amsterdam, The Netherlands. FAU - Kalkers, Nynke F AU - Kalkers NF AD - Department of Neurology, Amsterdam Neuroscience, MS Center Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands. FAU - Uitdehaag, Bernard Mj AU - Uitdehaag BM AD - Department of Neurology, Amsterdam Neuroscience, MS Center Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands. LA - eng PT - Journal Article DEP - 20190118 PL - England TA - Mult Scler JT - Multiple sclerosis (Houndmills, Basingstoke, England) JID - 9509185 RN - 0 (Potassium Channel Blockers) RN - BH3B64OKL9 (4-Aminopyridine) SB - IM MH - 4-Aminopyridine/pharmacology MH - Adult MH - Arm/*physiopathology MH - Female MH - Follow-Up Studies MH - Humans MH - Male MH - Middle Aged MH - *Minimal Clinically Important Difference MH - Multiple Sclerosis/*drug therapy/physiopathology MH - *Patient Reported Outcome Measures MH - Potassium Channel Blockers/*pharmacology MH - Psychometrics/instrumentation/*standards MH - Sensitivity and Specificity PMC - PMC7140338 OTO - NOTNLM OT - Multiple sclerosis OT - minimal clinically important difference OT - patient-reported outcome measure OT - upper extremity function COIS- Declaration of Conflicting Interests: The author(s) declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: C.E.P.v.M. has received travel support from Novartis Pharma AG, Sanofi Genzyme, and Teva Pharmaceuticals and honoraria for lecturing and consulting from Biogen-Idec and Merck Serono. L.K. and M.O. have no conflicts of interest. N.F.K. has received speaker and consultancy fees from Biogen, Teva, Genzyme, Roche, and Novartis. B.M.J.U. has received consultancy fees from Biogen-Idec, Genzyme, Merck Serono, Novartis, Roche, and Teva. EDAT- 2019/01/19 06:00 MHDA- 2021/05/08 06:00 PMCR- 2020/04/08 CRDT- 2019/01/19 06:00 PHST- 2019/01/19 06:00 [pubmed] PHST- 2021/05/08 06:00 [medline] PHST- 2019/01/19 06:00 [entrez] PHST- 2020/04/08 00:00 [pmc-release] AID - 10.1177_1352458518823489 [pii] AID - 10.1177/1352458518823489 [doi] PST - ppublish SO - Mult Scler. 2020 Apr;26(4):505-508. doi: 10.1177/1352458518823489. Epub 2019 Jan 18.