Table 1.

Clinician reported measures and time-points for data collection

Construct	Instrument	Before course	After course	4 months	Patient baseline registration
Individual characteristics	Age, sex, profession, role in the clinic	x
Experience	Years of clinical experience	x
Experience	Experience with GLA:D for knee and hip	x
Confidence	The Practitioner Confidence Scale (range 4–20) [14]	x		x
Treatment orientation	The Pain Attitudes and Beliefs Scale for Physiotherapists [15–17]. Biomedical subscale (range 10–60), behavioural subscale (range 9–54)	x		x
Evaluation of 2-day course	Content (0 = very poor; 10 = excellent)		x
	Novelty (0 = very low; 10 = very high)
	Usability (0 = very poor; 10 = very good)
Adoption	Did you start offering GLA:D Back in the clinic?			x	x
	How many groups have started?
	Number of patients in the registry
Overall impression	Everything considered, how do you think GLA:D Back works? (5-points Likert: very bad to very good)			x
Materials	How satisfied are you with the patient education materials? (0 = very unsatisfied; 10 = very satisfied)			x
Materials	How satisfied are you with the exercise programme? (0 = very unsatisfied; 10 = very satisfied)			x