| 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 | 11,177 | 99.5% | 0.1% | 11,177 | 98.5% | 0.1% | 34,288 | 91.0% | 0.2% | 56,493 | 77.1% | 0.3% |
| Yearly Center Volume | 0-12 | 179 | 99.4% | 0.6% | 179 | 99.4% | 0.6% | 556 | 94.2% | 1.3% | 1,429 | 84.0% | 1.5% |
| 13-28 | 507 | 99.0% | 0.4% | 507 | 99.0% | 0.4% | 1,808 | 91.5% | 0.8% | 3,786 | 78.4% | 1.2% | |
| 29-47 | 955 | 99.1% | 0.3% | 955 | 98.1% | 0.4% | 3,117 | 89.5% | 0.7% | 5,859 | 75.5% | 1.0% | |
| 48-81 | 1,827 | 99.5% | 0.2% | 1,827 | 98.8% | 0.3% | 6,657 | 90.8% | 0.5% | 12,135 | 76.2% | 0.7% | |
| 82+ | 7,709 | 99.6% | 0.1% | 7,709 | 98.4% | 0.1% | 22,150 | 91.1% | 0.3% | 33,284 | 77.3% | 0.4% | |