Table 2.

Regional Characteristics

Region and Registry	Participants (%)	NonParticipants (%)
All Registries	211(100)	37005(100)
Northeast
Connecticut	26(12)	2166(6)
New Jersey	70(33)	7096(19)
South
Atlanta, Georgia	1(0)	1051(3)
Rural Georgia	1(0)	83(0)
Kentucky	10(5)	2827(8)
Louisiana	9(4)	2561(7)
Midwest
Iowa	26(12)	2513(7)
Detroit, Michigan	8(4)	3545(10)
West
Hawaii	0(0)	552(1)
New Mexico	3(1)	940(3)
Seattle, Washington	6(3)	2112(6)
Utah	7(3)	1282(3)
California
San Francisco	1(0)	1164(3)
San Jose-Monterey	0(0)	790(2)
Los Angeles	23(11)	2527(7)
Greater California	20(9)	5796(16)