Table 2.

Variation in Resource Use and Quality Measures across Physicians, Facilities, and Patients, Adjusted for Case Mix

	Physician (n=4,280)	Dialysis Facility (n=4,166)	Patient (n=165,465)
Resource use for separately billable services ($/session)*
Mean+SD	$120.30	$135.35	$173.08
Mean	$112.96	$112.96	$112.96
Mean−SD	$105.62	$90.57	$52.84
Percent of months with hematocrit ≥33%
Mean+SD	79.58%	83.48%	100.00%
Mean	77.03%	77.03%	77.03%
Mean−SD	74.48%	70.58%	49.67%
	Physician (n=4,456)	Dialysis Facility (n=3,978)	Patient (n=141,312)
Percent of months with URR≥65%†
Mean+SD	92.72%	96.50%	100.00%
Mean	90.20%	90.20%	90.20%
Mean−SD	87.68%	83.90%	70.52%

^*Number of physician/facility pairs: 10,737. Results are based on an 80% random sample. Resource use included patient obligations.

^†Number of physician/facility pairs: 8,714.