| 3 Months | 1 Year | 3 Years | 5 Years | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (Tx 2002 - 2003) | (Tx 2002 - 2003) | (Tx 2000 - 2003) | (Tx 1998 - 2003) | ||||||||||
| N | % | Std. Err. | N | % | Std. Err. | N | % | Std. Err. | N | % | Std. Err. | ||
| Total | All | 2,610 | 89.4% | 0.6% | 2,610 | 80.9% | 0.8% | 4,962 | 67.1% | 0.8% | 7,401 | 52.6% | 0.8% |
| Yearly Center Volume | 0-12 | 9 | 88.9% | 10.5% | 9 | 88.9% | 10.5% | 39 | 63.2% | 8.3% | 79 | 51.5% | 7.2% |
| 13-28 | 129 | 92.2% | 2.4% | 129 | 78.1% | 3.7% | 279 | 64.6% | 3.3% | 457 | 48.7% | 3.1% | |
| 29-47 | 275 | 87.3% | 2.0% | 275 | 77.4% | 2.5% | 514 | 64.7% | 2.5% | 914 | 52.3% | 2.3% | |
| 48-81 | 647 | 87.8% | 1.3% | 647 | 80.1% | 1.6% | 1,181 | 66.2% | 1.7% | 1,692 | 51.9% | 1.6% | |
| 82+ | 1,550 | 90.2% | 0.8% | 1,550 | 82.1% | 1.0% | 2,949 | 68.1% | 1.0% | 4,259 | 53.4% | 1.0% | |