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The proportion of counties with local primary risk factor (the risk factor with the highest value of local variable importance) on COVID-19 death rate at county level in the GW-RF
| Local primary risk factor | Proportion of counties |
|---|---|
| Go to work by walking | 35% |
| Airborne benzene concentration | 25% |
| Householder with a mortgage | 13% |
| Unemployment | 12% |
| Other risk factors | 16% |
