Table 2. Schedule of Data Collection.

Type	Instrument	Domain	Baseline	Follow Up
Primary Outcomes	Global Health Scale	Overall health status	Yes	Yes
Secondary	Pain Interference	Pain	Yes*	Yes
	Sleep Disturbance	Sleep	Yes	Yes
	Depression	Depression	Yes*	Yes
	Ability to Participate	Social Functioning	Yes*	Yes
	Lower Extremity Functioning	Physical Functioning	Yes*	Yes
	6 Item Doctor Communication Composite (CAHPS)	Communication	Yes	Yes
Potential Effect Modifiers	SDM-Q-9	Shared decision making	Yes	No
	Adaptive Conjoint Analysis Tool	Treatment Preferences	Yes**	No

^*Restricted to patients who indicated difficulty in that domain on the global health scale.

^**To be administered to a subset (∼200) of patients.