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. 2022 Sep 15;5(9):e2231863. doi: 10.1001/jamanetworkopen.2022.31863

Table 2. Misassigned TRR Area.

Method Block group Census tract
Spatial (N = 102) Zip (N = 102) P value Spatial (N = 102) Zip (N = 102) P value
TRR misassigned, %
Mean (SD) 4.1 (3.1) 22.9 (14.9) NA 6.5 (4.8) 22.9 (14.9) NA
Median (range) 3.5 (0.2-23.9) 20.4 (1.4-87.9) <.001 5.3 (0.6-31.9) 20.4 (1.4-87.9) <.001
Area misassigned, km2
Mean (SD) 2860 (4510) 16 600 (24 000) NA 4330 (6750) 16 600 (24 000) NA
Median (range) 1150 (36-27 200) 8330 (120-121 000) <.001 1970 (36-40 100) 8330 (120-121 000) <.001

Abbreviation: TRRs, transplant referral regions.