Table 2.

Pretreatment Characteristics

Characteristic	Interval From Surgery to Start of Radiation
	≤ 2 Weeks (n = 756)		> 2 to 3 Weeks(n = 805)		> 3 to 4 Weeks (n = 757)		> 4 Weeks (n = 537)
	No.	%	No.	%	No.	%	No.	%
Days from surgery to start of radiation
Median	12		19		26		33
Range	1-14		15-21		22-28		29-73
Age, years
Median	57		56		57		55
Range	14-83		19-83		18-86		17-82
Dose, Gy
No. of patients with dose	494		676		672		424
Median	60		60		60		60
Range	1.7-82.87		6-85.68		2-86		2-84.32
Performance score*
Karnofsky
20-50	77	11	36	4	21	2	4	< 1
60	82	11	77	10	65	9	30	6
70	120	16	132	16	97	13	69	13
80	170	22	185	23	174	23	115	21
90	176	23	248	31	263	35	189	35
100	31	4	68	8	72	10	62	12
Zubrod
0	12	2	16	2	35	5	36	7
1	36	5	29	4	21	3	26	5
2	31	4	9	1	4	< 1	2	< 1
3	16	2	5	1	4	< 1	4	< 1
4	5	< 1	0	0	1	< 1	0	0
Prior surgery
Biopsy	223	29	178	22	124	16	94	18
Partial resection	399	53	436	54	426	56	290	54
Total resection	114	15	167	21	190	25	140	26
Other	15	2	26	2	9	1	10	2
Unknown	5	< 1	8	1	8	1	3	< 1
Neurologic impairment
None/minor	290	38	421	52	470	62	375	70
Moderate	351	46	318	40	257	34	151	28
Severe	107	14	61	8	29	4	9	2
Unknown/missing	8	1	5	1	1	0	2	0
Mental status
Normal function	395	52	495	61	486	64	348	65
Minor mental confusion	294	39	248	31	199	26	125	23
Gross confusion	41	5	26	3	21	3	7	1
Rousable with difficulty	4	1	2	< 1	0	0	0	0
Unknown/missing	22	3	34	4	51	7	57	11
RPA stage
III	83	11	129	16	119	16	113	21
IV	246	32	317	39	366	48	271	50
V	298	39	274	34	215	28	124	23
VI	127	17	82	10	53	7	28	5
Unknown	2	< 1	3	< 1	4	< 1	1	< 1

Abbreviation: RPA, recursive partitioning analysis.

^*Karnofsky was collected on studies 9806, 9803, 9710, 9602, 9513, 9417, 9411, 9305, 9006, 8409, 8302, and 7918; Zubrod was collected on studies 0023, 0021, and 0013; both Karnofsky and Zubrod were collected for study 7401 (for that study, Karnofsky performance score is reported where available).