| 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 | 4,130 | 91.3% | 0.4% | 4,130 | 86.8% | 0.5% | 8,460 | 79.2% | 0.5% | 12,889 | 71.8% | 0.5% |
| Yearly Center Volume | 0-5 | 189 | 86.2% | 2.5% | 189 | 80.4% | 2.9% | 520 | 73.2% | 2.1% | 724 | 69.6% | 2.1% |
| 6-10 | 444 | 88.5% | 1.5% | 444 | 83.8% | 1.7% | 880 | 76.9% | 1.6% | 1,391 | 68.6% | 1.5% | |
| 11-16 | 928 | 91.7% | 0.9% | 928 | 86.9% | 1.1% | 1,670 | 77.0% | 1.1% | 2,374 | 69.1% | 1.2% | |
| 17-24 | 640 | 92.7% | 1.0% | 640 | 88.8% | 1.2% | 1,588 | 80.5% | 1.1% | 2,433 | 71.8% | 1.1% | |
| 25+ | 1,929 | 91.8% | 0.6% | 1,929 | 87.5% | 0.8% | 3,802 | 80.9% | 0.7% | 5,967 | 73.9% | 0.7% | |