PMID- 21700440 OWN - NLM STAT- MEDLINE DCOM- 20111114 LR - 20151119 IS - 1532-3064 (Electronic) IS - 0954-6111 (Linking) VI - 105 IP - 9 DP - 2011 Sep TI - Minimal (clinically) important differences for the Fatigue Assessment Scale in sarcoidosis. PG - 1388-95 LID - 10.1016/j.rmed.2011.05.004 [doi] AB - OBJECTIVE: The usefulness of any questionnaire in clinical management and research trials depends on its ability to indicate a likelihood of treatment success during follow-up. The Minimal Clinically Important Difference (MCID) reflects a clinically relevant change score. The aim of this study was to estimate the MCID for the Fatigue Assessment Scale (FAS) in patients with sarcoidosis. METHODS: Outpatients (n = 321) of the ild care team of the Department of Respiratory Medicine of the Maastricht University Medical Centre, The Netherlands, participated in this prospective follow-up study. Anchor-based and distribution-based methods were used to estimate the MCID. Based on the anchor Physical Quality of Life, a Receiver Operating Characteristic (ROC) was obtained. The distribution-based methods consisted of the Effect Size and Standard Error Measurement (SEM). RESULTS: The anchor-based MCID found with ROC was 3.5. The distribution-based methods showed that the corresponding change scores in the FAS for a small effect was 4.2. The SEM criterion was 3.6 points change in the FAS. CONCLUSIONS: Based on the anchor-based and distribution-based methods, the MCID is a 4-point difference on the FAS. This MCID can be used in the follow-up of fatigue (FAS) in clinical trials and in the management of individual sarcoidosis cases. CI - Copyright (c) 2011 Elsevier Ltd. All rights reserved. FAU - de Kleijn, Willemien P E AU - de Kleijn WP AD - Center of Research on Psychology in Somatic Diseases (CoRPS), Department of Medical Psychology, Tilburg University, Tilburg, The Netherlands. FAU - De Vries, Jolanda AU - De Vries J FAU - Wijnen, Petal A H M AU - Wijnen PA FAU - Drent, Marjolein AU - Drent M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110623 PL - England TA - Respir Med JT - Respiratory medicine JID - 8908438 SB - IM MH - Activities of Daily Living MH - Adult MH - Aged MH - Aged, 80 and over MH - Disability Evaluation MH - Fatigue/*diagnosis/etiology/psychology MH - Female MH - Follow-Up Studies MH - Humans MH - Middle Aged MH - Netherlands MH - Prospective Studies MH - Quality of Life/*psychology MH - Sarcoidosis, Pulmonary/complications/*diagnosis/psychology MH - Severity of Illness Index MH - Surveys and Questionnaires/*standards MH - Treatment Outcome EDAT- 2011/06/28 06:00 MHDA- 2011/11/15 06:00 CRDT- 2011/06/25 06:00 PHST- 2010/11/18 00:00 [received] PHST- 2011/04/01 00:00 [revised] PHST- 2011/05/06 00:00 [accepted] PHST- 2011/06/25 06:00 [entrez] PHST- 2011/06/28 06:00 [pubmed] PHST- 2011/11/15 06:00 [medline] AID - S0954-6111(11)00167-3 [pii] AID - 10.1016/j.rmed.2011.05.004 [doi] PST - ppublish SO - Respir Med. 2011 Sep;105(9):1388-95. doi: 10.1016/j.rmed.2011.05.004. Epub 2011 Jun 23.