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Table 2 Outcome measures and potential predictors of treatment response

From: Depicting individual responses to physical therapist led chronic pain self-management support with pain science education and exercise in primary health care: multiple case studies

Construct Outcome Measure Scale range Minimal important difference
Function Short Musculoskeletal Function Assessment – Dysfunction Index (SMFA-DI) 0-100 7.5 pointsa
How much participants are bothered by difficulty with functional activities Short Musculoskeletal Function Assessment – Bother Index (SMFA-BI) 0-100 10.5 pointsa
Pain Intensity Numeric Pain Rating Scale (NPRS) 0-10 2 points [65]
Fatigue Numeric Fatigue Rating Scale (NFRS) 0-10 1.4 points [66]
Pain Interference PROMIS Pain Interference Item Bank - 8 items 8-40 5 pointsa
Catastrophic thinking Pain Catastrophizing Scale (PCS) 0-52 38% of scale [35]
Fear of symptom exacerbation 11-item Tampa Scale of Kinesiophobia (TSK-11) 11-44 5.6 points [67]
Sense of perceived injustice Injustice Experience Questionnaire (IEQ) 0-48 7 pointsa
Pain neurophysiology knowledge Neurophysiology of pain test (NPT) 0-13 1.1 pointsa
Self efficacy Pain Self Efficacy Questionnaire (PSEQ) 0-60 11 points [68]
Depressive symptoms Patient Health Questionnaire - 9 (PHQ-9) 0-27 5 points [44]
Post-traumatic stress symptoms Post-traumatic Stress Disorder Checklist –Civilian Version (PCL) 17-85 8.5 pointsa
  1. aIn the absence of an established MCID or MDC, this case series considered half a standard deviation as a minimally important difference as has been identified as a common MCID for quality of life measures [69]. In these instances, clinical data from Woodstock and Area Community Health Centre was used to establish the standard deviation