| 3 Months | 1 Year | 5 Years | 10 Years | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (Tx 2006 - 2007) | (Tx 2006 - 2007) | (Tx 2002 - 2007) | (Tx 1997 - 2007) | ||||||||||
| N | % | Std. Err. | N | % | Std. Err. | N | % | Std. Err. | N | % | Std. Err. | ||
| Total | All | 12,462 | 98.1% | 0.1% | 12,462 | 96.3% | 0.2% | 38,350 | 81.4% | 0.3% | 62,864 | 59.4% | 0.4% |
| Yearly Center Volume | 0-12 | 195 | 96.4% | 1.3% | 195 | 95.9% | 1.4% | 589 | 79.8% | 2.2% | 1,500 | 60.7% | 2.3% |
| 13-28 | 543 | 97.4% | 0.7% | 543 | 96.8% | 0.8% | 1,933 | 81.2% | 1.2% | 4,062 | 59.6% | 1.5% | |
| 29-47 | 1,027 | 97.0% | 0.5% | 1,027 | 94.6% | 0.7% | 3,397 | 79.7% | 0.9% | 6,403 | 56.7% | 1.2% | |
| 48-81 | 2,020 | 98.3% | 0.3% | 2,020 | 97.0% | 0.4% | 7,408 | 82.3% | 0.6% | 13,505 | 59.8% | 0.8% | |
| 82+ | 8,677 | 98.2% | 0.1% | 8,677 | 96.4% | 0.2% | 25,023 | 81.4% | 0.3% | 37,394 | 59.6% | 0.5% | |