PMID- 28751191 OWN - NLM STAT- MEDLINE DCOM- 20180612 LR - 20180612 IS - 1873-5126 (Electronic) IS - 1353-8020 (Linking) VI - 43 DP - 2017 Oct TI - Minimal clinically important difference of the Modified Fatigue Impact Scale in Parkinson's disease. PG - 101-104 LID - S1353-8020(17)30263-8 [pii] LID - 10.1016/j.parkreldis.2017.07.016 [doi] AB - OBJECTIVE: Fatigue is a common and debilitating symptom of Parkinson's disease (PD) with no evidence-based treatments. While several fatigue scales are partially validated in PD the minimal clinically important difference (MCID) is unknown for any scale but is an important psychometric value to design and interpret therapeutic trials. We thus sought to determine the MCID for the Modified Fatigue Impact Scale (MFIS). METHODS: This is a secondary data analysis from 94 PD participants in an acupuncture trial for PD fatigue. Standard psychometric approaches were used to establish validity and an anchor-based approach was used to determine the MCID. RESULTS: The MFIS demonstrated good concurrent validity with other outcome measures and high internal consistency. MCIDs values were found to be 13.8, 6.8 and 6.2 for the MFIS total, MFIS cognitive, and MFIS physical subscores respectively. CONCLUSIONS: The MFIS is a valid multidimensional measure of fatigue in PD with demonstrable MCID. CI - Copyright (c) 2017 Elsevier Ltd. All rights reserved. FAU - Kluger, Benzi M AU - Kluger BM AD - Department of Neurology of the University of Colorado Anschutz Medical Campus, Aurora, CO, USA. Electronic address: benzi.kluger@ucdenver.edu. FAU - Garimella, Sanjana AU - Garimella S AD - Department of Neurology of the University of Colorado Anschutz Medical Campus, Aurora, CO, USA. FAU - Garvan, Cynthia AU - Garvan C AD - Department of Anesthesia at the University of Florida, Gainesville, FL, USA. LA - eng PT - Journal Article DEP - 20170720 PL - England TA - Parkinsonism Relat Disord JT - Parkinsonism & related disorders JID - 9513583 SB - IM MH - Acupuncture Therapy/methods MH - Adult MH - Aged MH - Aged, 80 and over MH - Cognition Disorders/etiology MH - Disability Evaluation MH - Fatigue/*diagnosis/*etiology MH - Female MH - Humans MH - Male MH - Middle Aged MH - Parkinson Disease/*complications/therapy MH - Physical Examination MH - Psychometrics MH - Statistics as Topic OTO - NOTNLM OT - Fatigue OT - Minimal clinically important difference OT - Modified Fatigue Impact Scale OT - Parkinson's disease OT - Validity EDAT- 2017/07/29 06:00 MHDA- 2018/06/13 06:00 CRDT- 2017/07/29 06:00 PHST- 2017/06/12 00:00 [received] PHST- 2017/07/14 00:00 [revised] PHST- 2017/07/19 00:00 [accepted] PHST- 2017/07/29 06:00 [pubmed] PHST- 2018/06/13 06:00 [medline] PHST- 2017/07/29 06:00 [entrez] AID - S1353-8020(17)30263-8 [pii] AID - 10.1016/j.parkreldis.2017.07.016 [doi] PST - ppublish SO - Parkinsonism Relat Disord. 2017 Oct;43:101-104. doi: 10.1016/j.parkreldis.2017.07.016. Epub 2017 Jul 20.