Table 2.

Variables collected for iChoose Kidney randomized control trial

Variable name	Mode of collection
	Patient baseline survey	Research assistant observation	EMR data abstraction or extraction
Patient demographic and socioeconomic factors
Age			x
Race	x	x	x
Hispanic ethnicity	x	x	x
Sex	x	x	x
Income	x
Marital status	x
Education level	x
Health insurance	x
Employment status	x
Self-rated health	x
Internet access	x
Social support	x	x
Health literacy	x
Health numeracy	x
Prior exposure to transplant	x
Time point first educated about transplant	x
Patient clinical factors
Body mass index			x
History of hypertension			x
History of diabetes			x
History of cardiovascular disease			x
Low albumin levels			x
Date of dialysis start			x
Time on dialysis	x		x
Dialysis modality	x		x
Outcome measures
Knowledge about transplant	x
Decisional conflict	x
Treatment preferences	x
Access to transplant measures
Date of transplant evaluation			x
Transplant evaluation end date			x
Date of wait-listing			x
Date of transplant			x
Number of living-donor inquiries			x

All variables collected were measures at the time of kidney transplant evaluation.

EMR, electronic medical record.