Table 2.

Summary of primary and secondary outcome and cost measure

Measure	Specific instrument
Primary outcome Measure
Function related pain	WOMAC Pain Scale (3.1 Likert version)
Secondary Outcome Measures
Self-reported function	WOMAC Physical Function Scale (3.1 Likert version)
Pain catastrophizing	Pain Catastrophizing Scale
Pain intensity	Numeric Pain Rating Scale
Global rating	Global rating of change scale
Walk test	6-minute walk test
Physical Performance	Short Physical Performance Battery
Cost Measures
Employment status	Self-report
Healthcare visits	Self-report
Emergency room or urgent care visits	Self-report
Inpatient admissions	Self-report
Health Status	EQ-5D-5L