Table 4.
Summary statistics for circular and non-circular high-risk clusters of COVID-19 case fatality rates and mortality risks
| Outcome variable | Cluster | Cases/100,000 | Population | Observed cases | Expected cases | No. of counties | p-value |
|---|---|---|---|---|---|---|---|
| COVID-19 case fatality rate | Cluster 1 | 2.5a | 50,088 | 1,257 | 760 | 7 | 0.001 |
| Cluster 2 | 2.3a | 11,992 | 278 | 182 | 1 | 0.001 | |
| Cluster 3 | 3.0a | 3,193 | 100 | 51 | 1 | 0.001 | |
| Cluster 4 | 6.6a | 209 | 13 | 3 | 1 | 0.016 | |
| Number of COVID-19 deaths per 100,000 persons | Cluster 1 | 36 | 8,060,811 | 2,870 | 1,738 | 10 | 0.001 |
| Cluster 2 | 37 | 381,071 | 139 | 82 | 1 | 0.001 | |
| Cluster 3 | 29 | 971,022 | 278 | 209 | 1 | 0.002 |
aExpressed as a percentage