Table 3. Percentage of patients receiving guideline-based care and mean number of fractions delivered for the reference population.

Cancer Type	Measure	2011 Fee-For-Service	2013 Fee-For-Service	RR	95% CI	P-Value of Change in Mean
Bone mets.				1.1	(0.65–1.79)
	%	50.0%	53.8%
	n	22	39
	Mean	12.1	10.7			0.49
	±SD	8.4	4.2
Breast				0.9	(0.08–1.02)
	%	94.7%	85.9%
	n	38	71
	Mean	26.6	27.5			0.57
	±SD	7.9	8.3
Lung				0.9	(0.76–1.17)
	%	87.5%	82.4%
	n	24	34
	Mean	24.3	25.6			0.65
	±SD	10.8	11
Prostate				1.5†	(1.25–1.77)
	%	58.5%	87.1%
	n	106	124
	2D3D mean	36.2	38.7			0.51
	2D3D ±SD	8.8	11.3
	2D3D n	71	10
	IMRT mean	36.8	38.6			0.25
	IMRT ±SD	8.2	7.1
	IMRT n	35	114
Skin				1.1	(0.95–1.15)
	%	91.9%	97.5%
	n	37	40
	2D3D mean	18.3	20.8			0.14
	2D3D ±SD	7.4	7.4
	2D3D n	37	40
	IMRT mean	n/a	n/a			n/a
	IMRT ±SD	n/a	n/a
	IMRT n	n = 0	n = 0
Overall				1.2†	(1.05–1.29)
	%	72.2%	83.4%
	n	227	308

CI = confidence interval, mets. = metastases, RR = relative risk, SD = standard deviation.

^†P < .05.