Table 3.
Descriptive characteristics of orthodontic DSAs
| DSA | Recipient zip codes (n) |
Medicaid enrollees (n) |
Ortho utilizers (% of enrollees) |
Weighted‡ travel distance (miles) |
Total population (2010) |
Population density |
Land area (square miles) |
Medicaid orthodontists (2010) |
|---|---|---|---|---|---|---|---|---|
| Ames | 27 | 2687 | .60 | 10.85 | 116450 | 89.9 | 1295 | 1 |
| Bettendorf | 15 | 7465 | .86 | 8.47 | 156980 | 458.2 | 343 | 1 |
| Cedar Rapids | 65 | 9538 | 3.23 | 13.93 | 292061 | 97.6 | 2992 | 7 |
| Charles City | 54 | 4123 | 3.52 | 30.33 | 115511 | 32.2 | 3586 | 2 |
| Clinton | 26 | 2971 | 5.25 | 13.17 | 70695 | 48.5 | 1459 | 1 |
| Council Bluffs | 145 | 12659 | 6.26 | 41.87 | 284501 | 27.6 | 10305 | 4 |
| Des Moines | 16 | 10232 | .50 | 5.36 | 210574 | 875.2 | 241 | 2 |
| Fort Dodge | 65 | 4382 | 3.63 | 22.07 | 104631 | 26.4 | 3970 | 1 |
| Indianola | 63 | 4296 | 1.79 | 36.62 | 102593 | 24.4 | 4214 | 1 |
| Iowa City/Coralville | 88 | 11211 | 1.26 | 49.18 | 306321 | 57.0 | 5376 | 5 |
| Marshalltown | 31 | 3542 | 1.07 | 16.22 | 70825 | 39.3 | 1800 | 1 |
| Muscatine | 28 | 5312 | 2.24 | 26.20 | 101417 | 71.4 | 1420 | 2 |
| Newton | 44 | 4573 | 3.21 | 27.07 | 125219 | 44.3 | 2829 | 1 |
| Sibley/Spencer | 63 | 3700 | 7.46 | 30.28 | 97522 | 22.8 | 4284 | 2 |
| Sioux City | 68 | 8188 | 6.19 | 17.25 | 190191 | 42.4 | 4488 | 3 |
| South Des Moines | 3 | 3862 | .85 | 5.12 | 63726 | 1543.0 | 41 | 1 |
| Urbandale | 19 | 2664 | .49 | 14.03 | 132549 | 145.6 | 910 | 2 |
| Waterloo/Cedar Falls | 104 | 13143 | 3.89 | 40.35 | 377504 | 59.5 | 6350 | 6 |
| West Des Moines | 11 | 1782 | 1.52 | 5.83 | 109432 | 331.9 | 330 | 2 |
‡
Weighted by the number of Medicaid enrollees ages 6-18 years per zip code.