Exhibit 1.
Characteristics of Oregon Medicaid enrollees in the study population
| Characteristic | Whites (n = 538,682) | Blacks (n = 36,601) | AI/ANs (n = 25,925) |
|---|---|---|---|
| Age (years) | 19.6 | 17.9 | 20.0 |
| Female | 55.5% | 53.6% | 54.7% |
| Neighborhood poverty ratea | 27.3% | 28.8% | 28.2% |
| Urban residence | 80.5% | 96.6% | 75.9% |
| CDPS risk score | 1.2 | 1.1 | 1.2 |
SOURCE Authors’ analysis of 2010–14 Oregon Medicaid claims data. NOTES AI/AN is American Indian/Alaska Native. CDPS is the Chronic Illness and Disability Payment System, a Medicaid risk adjustment system that uses ICD9 codes to identify a variety of medical conditions and their severity. Higher numbers are associated with populations with more chronic conditions.
a
Percentage of residents in the enrollee’s primary care service area with incomes below 150 percent of the federal poverty level.