| 3 Months | 1 Year | 5 Years | 10 Years | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (Tx 2005 - 2006) | (Tx 2005 - 2006) | (Tx 2001 - 2006) | (Tx 1996 - 2006) | ||||||||||
| N | % | Std. Err. | N | % | Std. Err. | N | % | Std. Err. | N | % | Std. Err. | ||
| Total | All | 1,780 | 97.4% | 0.4% | 1,780 | 95.1% | 0.5% | 5,278 | 86.6% | 0.6% | 9,732 | 70.1% | 0.7% |
| Yearly Center Volume | 0-3 | 201 | 96.5% | 1.3% | 201 | 95.0% | 1.5% | 802 | 86.5% | 1.5% | 1,469 | 70.5% | 2.1% |
| 4-6 | 368 | 97.3% | 0.8% | 368 | 95.4% | 1.1% | 792 | 85.7% | 1.6% | 1,790 | 71.8% | 1.6% | |
| 7-9 | 188 | 97.9% | 1.1% | 188 | 94.7% | 1.6% | 626 | 89.9% | 1.6% | 1,392 | 69.6% | 2.0% | |
| 10-16 | 440 | 97.0% | 0.8% | 440 | 94.5% | 1.1% | 1,191 | 87.8% | 1.2% | 2,336 | 66.4% | 1.7% | |
| 17+ | 583 | 97.8% | 0.6% | 583 | 95.4% | 0.9% | 1,867 | 85.1% | 1.1% | 2,745 | 71.7% | 1.3% | |