| 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 | 20,298 | 95.3% | 0.1% | 20,298 | 91.0% | 0.2% | 55,513 | 69.3% | 0.3% | 94,990 | 43.3% | 0.3% |
| Yearly Center Volume | 0-12 | 336 | 96.1% | 1.1% | 336 | 94.3% | 1.3% | 932 | 68.9% | 2.2% | 2,333 | 42.5% | 1.8% |
| 13-28 | 1,147 | 94.8% | 0.7% | 1,147 | 90.6% | 0.9% | 3,517 | 67.8% | 1.1% | 7,006 | 43.7% | 1.0% | |
| 29-47 | 2,098 | 95.3% | 0.5% | 2,098 | 90.0% | 0.7% | 6,117 | 68.7% | 0.8% | 12,834 | 44.9% | 0.8% | |
| 48-81 | 3,533 | 96.1% | 0.3% | 3,533 | 92.4% | 0.4% | 11,884 | 70.9% | 0.6% | 20,658 | 42.7% | 0.6% | |
| 82+ | 13,184 | 95.1% | 0.2% | 13,184 | 90.7% | 0.3% | 33,063 | 68.9% | 0.4% | 52,159 | 43.1% | 0.4% | |