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. 2012 Jan 28;470(8):2319–2324. doi: 10.1007/s11999-012-2259-x

Table 1.

Geographic distribution of responding and nonresponding programs

Region Number (%) of responding programs Number (%) of nonresponding programs
New England 5 (6) 4 (5)
Middle Atlantic 16 (20) 16 (22)
East North Central 17 (21) 9 (13)
West North Central 5 (6) 5 (7)
South Atlantic 11 (14) 17 (24)
East South Central 4 (5) 4 (6)
West South Central 8 (10) 8 (11)
Mountain 2 (3) 3 (4)
Pacific 11 (14) 6 (8)
Puerto Rico 1 (1) 0 (0)
Total 80 (100) 72 (100)