| 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 | 4,001 | 91.8% | 0.4% | 4,001 | 87.5% | 0.5% | 8,199 | 80.0% | 0.5% | 12,473 | 72.8% | 0.5% |
| Yearly Center Volume | 0-5 | 186 | 87.1% | 2.5% | 186 | 81.2% | 2.9% | 505 | 74.2% | 2.1% | 700 | 70.6% | 2.1% |
| 6-10 | 428 | 88.8% | 1.5% | 428 | 84.3% | 1.8% | 860 | 77.5% | 1.6% | 1,356 | 69.5% | 1.5% | |
| 11-16 | 902 | 91.9% | 0.9% | 902 | 87.3% | 1.1% | 1,626 | 77.7% | 1.1% | 2,312 | 69.7% | 1.2% | |
| 17-24 | 620 | 93.1% | 1.0% | 620 | 89.5% | 1.2% | 1,531 | 81.7% | 1.1% | 2,343 | 73.5% | 1.1% | |
| 25+ | 1,865 | 92.5% | 0.6% | 1,865 | 88.4% | 0.7% | 3,677 | 81.6% | 0.7% | 5,762 | 74.8% | 0.7% | |