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

Table 2 Outcome measures and potential predictors of treatment response

Construct	Outcome Measure	Scale range	Minimal important difference
Function	Short Musculoskeletal Function Assessment – Dysfunction Index (SMFA-DI)	0-100	7.5 points^a
How much participants are bothered by difficulty with functional activities	Short Musculoskeletal Function Assessment – Bother Index (SMFA-BI)	0-100	10.5 points^a
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 points^a
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 points^a
Pain neurophysiology knowledge	Neurophysiology of pain test (NPT)	0-13	1.1 points^a
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 points^a

^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

ISSN: 2057-0082