. Author manuscript; available in PMC: 2011 Nov 15.

Published in final edited form as: Clin Cancer Res. 2010 Nov 9;16(22):5381–5389. doi: 10.1158/1078-0432.CCR-10-1273

Table 5.

Cancer Center Accrual to Cooperative Group Trials and Non-Cooperative Group Trials

	Cancer Center	Cancer Center	Cancer Center	Cancer Center
Accruals By Sponsor:	A	B	C	D	Overall
Time Period	1/2001-7/2005	1/2000-9/2006	1/2000- 12/2005	1/2000-4/2007
Cooperative Group Trials
n=	37	166	61	130	394
zero	27.0%	38.6%	29.5%	46.9%	38.8%
1-4	37.8%	38.6%	39.3%	38.5%	38.6%
5-10	13.5%	13.9%	19.7%	7.7%	12.7%
11-15	8.1%	4.2%	6.6%	0.0%	3.6%
16-20	2.7%	0.0%	1.6%	4.6%	2.0%
>20	10.8%	4.8%	3.3%	2.3%	4.3%

Non-Cooperative Group Trials
n=	111	157	43	193	504
zero	18.9%	14.6%	23.3%	25.9%	20.6%
1-4	30.6%	22.9%	9.3%	26.4%	24.8%
5-10	23.4%	18.5%	32.6%	24.9%	23.2%
11-15	12.6%	13.4%	14.0%	7.3%	10.9%
16-20	2.7%	7.6%	7.0%	5.7%	5.8%
>20	11.7%	22.9%	14.0%	9.8%	14.7%