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. 2011 Oct 6;10:54. doi: 10.1186/1476-072X-10-54

Table 2.

Number of ZIP codes with values above the 90th percentile of observed rates.

Method No. ZIPs > 10 cases/1,000 tests %Δ from Observed
Observed 74 --
UMBME 65 -12%
Poisson kriging 30 -59%