Impact of geography on organ allocation: Beyond the distance to the transplantation center

Table 1 Total registrations by state

State	Total registrations	Rate per 100000 population
CT	1024	29.0
VT1	104	41.6
ME	637	48.4
NH	652	50.0
RI	655	62.8
MA	5241	80.4

¹Partial-only a portion of the state is included in United Network of Organ Sharing Region 1. CT: Connecticut; VT: Vermont; ME: Maine; NH: New Hampshire; RI: Rhode Island; MA: Massachusetts.

Table 2 Details of significant clusters in 2012

Cluster	Cluster type	Listed	Expected	Relative risk	Significance	ZIP codes	Population
1	High	114	39	3.3	<< 0.0001	63	683114
2	High	198	144	1.5	0.039	165	2554406
3	Low	107	171	0.57	0.00025	710	3027545
4	Low	34	67	0.48	0.055	89	1191886