| 2004 | 2002 | |||
|---|---|---|---|---|
| State | Percent | Standard error | Percent | Standard error |
| United States | 91.0 | 0.6 | 87.4 | 0.7 |
| Alabama | 88.7 | 2.1 | 87.0 | 2.1 |
| Alaska | 95.3 | 1.9 | 88.6 | 2.5 |
| Arizona | 90.9 | 1.8 | 80.9 | 2.4 |
| Arkansas | 86.1 | 2.2 | 82.4 | 2.3 |
| California | 88.4 | 2.1 | 82.4 | 2.4 |
| Colorado | 94.3 | 1.4 | 91.4 | 1.6 |
| Connecticut | 91.9 | 1.8 | 91.7 | 1.8 |
| Delaware | 92.6 | 1.7 | 93.3 | 1.6 |
| District of Columbia | 91.9 | 1.8 | 87.5 | 2.0 |
| Florida | 86.9 | 2.3 | 79.6 | 2.6 |
| Georgia | 85.3 | 2.3 | 85.6 | 2.2 |
| Hawaii | 91.6 | 1.9 | 88.8 | 2.0 |
| Idaho | 91.5 | 1.7 | 92.6 | 1.6 |
| Illinois | 85.8 | 2.3 | 82.2 | 2.4 |
| Indiana | 94.0 | 1.5 | 89.4 | 1.8 |
| Iowa | 90.5 | 1.9 | 87.9 | 2.1 |
| Kansas | 89.6 | 1.9 | 85.4 | 2.3 |
| Kentucky | 90.8 | 1.9 | 89.5 | 1.9 |
| Louisiana | 85.6 | 2.1 | 79.0 | 2.5 |
| Maine | 96.7 | 1.2 | 92.2 | 1.8 |
| Maryland | 90.6 | 1.9 | 85.3 | 2.5 |
| Massachusetts | 93.3 | 1.7 | 93.3 | 1.6 |
| Michigan | 91.3 | 1.8 | 88.1 | 2.2 |
| Minnesota | 94.6 | 1.4 | 90.1 | 1.9 |
| Mississippi | 87.8 | 2.1 | 81.4 | 2.6 |
| Missouri | 88.0 | 2.0 | 90.6 | 1.8 |
| Montana | 94.1 | 1.5 | 88.6 | 1.9 |
| Nebraska | 91.6 | 1.8 | 91.8 | 1.7 |
| Nevada | 88.5 | 2.1 | 84.9 | 2.2 |
| New Hampshire | 95.4 | 1.6 | 92.9 | 1.7 |
| New Jersey | 86.8 | 2.4 | 80.0 | 2.7 |
| New Mexico | 95.0 | 1.4 | 87.9 | 2.0 |
| New York | 89.5 | 2.2 | 88.7 | 2.1 |
| North Carolina | 96.7 | 1.2 | 91.8 | 1.8 |
| North Dakota | 94.7 | 1.3 | 90.1 | 1.8 |
| Ohio | 86.9 | 2.2 | 85.5 | 2.3 |
| Oklahoma | 83.7 | 2.4 | 86.0 | 2.3 |
| Oregon | 91.9 | 1.7 | 86.5 | 2.1 |
| Pennsylvania | 93.2 | 1.6 | 85.6 | 2.2 |
| Puerto Rico | 71.3 | 3.6 | 65.4 | 2.9 |
| Rhode Island | 95.9 | 1.4 | 92.3 | 1.7 |
| South Carolina | 94.2 | 1.5 | 90.0 | 1.8 |
| South Dakota | 94.6 | 1.5 | 92.0 | 1.8 |
| Tennessee | 92.0 | 1.7 | 85.2 | 2.2 |
| Texas | 91.0 | 1.8 | 82.8 | 2.4 |
| Utah | 93.8 | 1.5 | 92.6 | 1.6 |
| Vermont | 96.3 | 1.2 | 95.0 | 1.4 |
| Virginia | 94.1 | 1.5 | 93.2 | 1.6 |
| Washington | 90.7 | 1.8 | 90.1 | 1.8 |
| West Virginia | 92.1 | 1.8 | 86.5 | 2.3 |
| Wisconsin | 91.8 | 1.7 | 88.1 | 2.2 |
| Wyoming | 93.2 | 1.8 | 87.9 | 2.1 |
Source: Centers for Medicare & Medicaid Services, Medicare Quality Improvement Organization Program.