PMID- 32420712 OWN - NLM STAT- MEDLINE DCOM- 20210302 LR - 20210302 IS - 1973-9095 (Electronic) IS - 1973-9087 (Linking) VI - 56 IP - 5 DP - 2020 Oct TI - Reliability, responsiveness and minimal clinically important difference of the two Fear Avoidance and Beliefs Questionnaire scales in Italian subjects with chronic low back pain undergoing multidisciplinary rehabilitation. PG - 600-606 LID - 10.23736/S1973-9087.20.06158-4 [doi] AB - BACKGROUND: The Fear-Avoidance Beliefs Questionnaire (FABQ) is a widely used outcome measure. There is still a lack of information concerning responsiveness and minimal clinically important difference (MCID), limiting its use for clinical and research purposes. AIM: The aim of this study was to examine reliability, responsiveness and MCID of the two FABQ scales in subjects with chronic low back pain. DESIGN: Methodological research based on a prospective single-group observational study. SETTING: Outpatient, Unit of rehabilitation. POPULATION: Chronic non-specific low back pain. METHODS: At the beginning and the end of a multidisciplinary program (8-week), 129 subjects completed the FABQ scales. Reliability was determined as internal consistency (Cronbach's alpha) and test-retest reliability (96-hour interval; N.=64; Interclass correlation coefficient [ICC 2.1]). Responsiveness was calculated both by distribution-based and anchor-based methods, using as external criterion the Global Perceived Effect Scale (GPE: 7 levels), rated by each individual. RESULTS: Cronbach's alpha and ICC(2,1) were respectively: 0.75 and 0.90 for FABQ-Physical Activity Scale (FABQ-PA), and 0.85 and 0.95 for FABQ-Work Scale (FABQ-W). Minimum detectable change (MDC95) values were 3.69 points for FABQ-PA, and 5.95 points for FABQ-W. In receiver-operating characteristic curves, splitting GPE data into null/minimal/moderate improvement vs. large improvement (GPE 0-2 vs. GPE 3): 1) for FABQ-PA, the area under the curve (AUC) was 0.97 and the best cutoff score identifying meaningful change in fear-avoidance beliefs about physical activity was a change of 4 points; 2) for FABQ-W, the AUC was 0.97 and the best cutoff score for meaningful change in fear-avoidance beliefs about work activities was a change of 7 points. CONCLUSIONS: After triangulation of the above results, a change of 4 points for FABQ-PA and 7 points for FABQ-W were selected as MCID. These two values represent cutoffs that seem to accurately identify meaningful change in fear-avoidance beliefs, according to subject's judgement. CLINICAL REHABILITATION IMPACT: The present study calculated - in a sample of people with chronic low back pain - the minimal clinically important change of the two FABQ scales (FABQ-Physical Activity Scale and FABQ-Work Scale). These values increase confidence in interpreting score changes, thus enhancing their meaningful use in both research and clinical contexts. FAU - Monticone, Marco AU - Monticone M AD - Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy - marco.monticone@unica.it. AD - Unit of Neurorehabilitation, Department of Neuroscience and Rehabilitation, G. Brotzu Hospital, Cagliari, Italy - marco.monticone@unica.it. FAU - Frigau, Luca AU - Frigau L AD - Department of Economics and Business Science, University of Cagliari, Cagliari, Italy. FAU - Vernon, Howard AU - Vernon H AD - Canadian Memorial Chiropractic College, Toronto, ON, Canada. FAU - Rocca, Barbara AU - Rocca B AD - Unit of Physical Medicine and Rehabilitation, IRCCS Maugeri, Institute of Lissone, Lissone, Monza-Brianza, Italy. FAU - Giordano, Andrea AU - Giordano A AD - Unit of Bioengineering, IRCCS Maugeri, Institute of Veruno, Veruno, Novara, Italy. FAU - Simone Vullo, Salvatore AU - Simone Vullo S AD - Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy. AD - Unit of Neurorehabilitation, Department of Neuroscience and Rehabilitation, G. Brotzu Hospital, Cagliari, Italy. FAU - Mola, Francesco AU - Mola F AD - Department of Economics and Business Science, University of Cagliari, Cagliari, Italy. FAU - Franchignoni, Franco AU - Franchignoni F AD - Unit of Physical Medicine and Rehabilitation, IRCCS Maugeri, Institute of Lissone, Lissone, Monza-Brianza, Italy. LA - eng PT - Journal Article PT - Observational Study DEP - 20200518 PL - Italy TA - Eur J Phys Rehabil Med JT - European journal of physical and rehabilitation medicine JID - 101465662 SB - IM MH - Adult MH - Chronic Pain/*psychology/*rehabilitation MH - Disability Evaluation MH - Fear/*psychology MH - Female MH - Humans MH - Italy MH - Low Back Pain/*psychology/*rehabilitation MH - Male MH - Middle Aged MH - Minimal Clinically Important Difference MH - Pain Measurement MH - Prospective Studies MH - Psychometrics MH - Reproducibility of Results MH - Surveys and Questionnaires/*standards EDAT- 2020/05/19 06:00 MHDA- 2021/03/03 06:00 CRDT- 2020/05/19 06:00 PHST- 2020/05/19 06:00 [pubmed] PHST- 2021/03/03 06:00 [medline] PHST- 2020/05/19 06:00 [entrez] AID - S1973-9087.20.06158-4 [pii] AID - 10.23736/S1973-9087.20.06158-4 [doi] PST - ppublish SO - Eur J Phys Rehabil Med. 2020 Oct;56(5):600-606. doi: 10.23736/S1973-9087.20.06158-4. Epub 2020 May 18.