Table 2.

PCI utilization rates and reasons for declining treatment

	All patients		Date of diagnosis				P-valuea
			2/2/2008 and prior		After 2/2/2008
	n	%	n	%	n	%
Number of patients	208	100	105	50	103	50
Age, median [range]	67 (43-94)		67 (43-94)		67 (46-86)		.685
PCI utilization							.184
PCI received	115	55	53	50	62	60
Lack of PCI	93	45	52	50	41	40
Brain imaging pre-RT	195	94	101	96	94	91	.147
Reason for lack of PCI							.171
Patient refused	35	38	18	35	17	41
Medically unfit	31	33	18	35	13	32
Medical Oncology	21	68
Radiation Oncology	10	32
Age	7	8	4	8	3	7
Other	4	4	3	6	1	2
Prior RT	2	2	2	4	0	0
Unknown reasons	14	15	7	13	7	17

PCI, prophylactic cranial irradiation; RT, radiation therapy.

^aIndependent-samples Mann-Whitney U test was performed for age and reason for lack of PCI. χ² test was performed for all other variables.