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. 2021 Oct 1;5(10):e2021GH000478. doi: 10.1029/2021GH000478

Table 2.

Reclassification of RUCA Over Nebraska Used for This Study

RUCA code Classification description Median land area (square miles) Median population This study
1 Metropolitan area core: primary flow within an urbanized area (UA) 1.0 3,440 Medium Metro
2 Metropolitan area high commuting: primary flow 30% or more to a UA 15.3 3,965 Small Metro
3 Metropolitan area low commuting: primary flow 10%–30% to a UA
4 Micropolitan area core: primary flow within an urban cluster of 10,000 to 49,999 (large UC)
5 Micropolitan high commuting: primary flow 30% or more to a large UC 85.1 3,319 Micropolitan
6 Micropolitan low commuting: primary flow 10%–30% to a large UC
7 Small town core: primary flow within an urban cluster of 2,500 to 9,999 (small UC)
8 Small town high commuting: primary flow 30% or more to a small UC
9 Small town low commuting: primary flow 10%–30% to a small UC Not in Nebraska
10 Rural areas: primary flow to a tract outside a UA or UC 439.9 2538 Rural