Table 1.
Sources and descriptive characteristics of county-level variables
| Data Source | Quartile 1 | Quartile 3 | Coefficient of Variation | |||||
|---|---|---|---|---|---|---|---|---|
| Mean | Std Dev | Min | Max | |||||
| Diabetes incidence per 100,000, age-adjusted, 2013 | (6) | 856.4 | 233.5 | 700 | 1000 | 27.3 | 310 | 2190 |
| Population (1000) 2009-2013 | (17) | 100.2 | 318.1 | 11.4 | 68.11 | 317.6 | 0.5 | 9893 |
| Social and economic features | ||||||||
| % Urban 2010 | (18) | 41.7 | 31.4 | 14.2 | 67 | 75.3 | 0 | 100 |
| Service-dependent economy 2004 | (18) | 0.5 | 0.5 | 0 | 1 | 93.4 | 0 | 1 |
| % Unemployed 2006-2010 | (19) | 23.7 | 8.4 | 17.8 | 28.7 | 35.5 | 1.7 | 63.1 |
| % Without high school education 2006-2010 | (19) | 16.9 | 7.3 | 11.4 | 21.5 | 43.4 | 0.7 | 52.1 |
| Median income 2006 ($1,000) | (20) | 40.7 | 10.5 | 33.81 | 45.02 | 25.8 | 18.7 | 100.8 |
| % In poverty 2006 | (20) | 15.4 | 6.2 | 11.1 | 18.7 | 40.3 | 2.5 | 48.5 |
| Health-related environment | ||||||||
| % with exercise opportunities 2010-2012 | (21) | 52.2 | 24.4 | 34.77 | 70.12 | 46.8 | 0 | 100 |
| Poor air quality 2004-2006 | (22) | 0.2 | 0.4 | 0 | 0 | 218.4 | 0 | 1 |
| % Long commute 2010 | (21) | 29.6 | 11.9 | 20.7 | 37.9 | 40.3 | 0 | 71.2 |
| Food environment index 2010-2011 | (21) | 7.4 | 1.2 | 6.79 | 8.21 | 16.8 | 0 | 10 |
| Primary care doctors per 100,000 population 2011 | (20) | 53.1 | 34.9 | 31.52 | 70.08 | 65.8 | 0 | 508.3 |
Notes: Data describe the mean of each county-level characteristic across the 3,109 counties analyzed.