Characteristics of Participating Practices and Their Diabetic Patients, by HCH Certification Status and Overall
| Characteristic | Certified Practices | Uncertified Practices | P Valuea | Total |
|---|---|---|---|---|
| Practices | ||||
| Number | 258 | 136 | … | 394 |
| Ownership, % | .75 | |||
| Large hospital-affiliated medical group | 78.3 | 75.7 | 77.4 | |
| Medium/small medical group | 18.6 | 19.9 | 19.0 | |
| Single site | 3.1 | 4.4 | 3.6 | |
| Federally Qualified Health Center, % | 3.9 | 1.5 | .19 | 3.1 |
| Location, % | <.001 | |||
| Metropolitan/urban | 76.0 | 49.3 | 66.8 | |
| Large rural town | 6.2 | 15.4 | 9.4 | |
| Small rural town | 7.0 | 5.2 | 6.4 | |
| Isolated rural town | 10.9 | 30.2 | 17.5 | |
| Patients with diabetes | ||||
| Number | 158,547 | 58,932 | … | 217,479 |
| Age, mean (SD), y | 58.0(11.5) | 59.4(11.4) | <.001 | 58.4(11.5) |
| Female, % | 46.6 | 45.8 | .46 | 46.3 |
| Insurance, % | <.001 | |||
| Commercial | 44.6 | 43.9 | 44.5 | |
| Medicaid | 11.0 | 6.5 | 9.8 | |
| Medicare | 36.9 | 43.4 | 38.7 | |
| Dual Medicare-Medicaid | 4.4 | 4.4 | 4.4 | |
| Self-pay/uninsured | 3.0 | 1.8 | 2.7 | |
| Ischemic vascular disease prevalence, % | 15.2 | 16.9 | <.001 | 15.7 |
| Depression prevalence, % | 23.9 | 22.7 | <.001 | 23.5 |
HCH = health care home.
↵a Difference in practice characteristics by certification status tested using a Pearson χ2 test. Difference in patient characteristics by certification status tested by modeling outcome as a function of the certification variable, with practice random effects and clustered standard errors to account for correlation in patient outcomes within practice.