| 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 | 12,995 | 97.7% | 0.1% | 12,995 | 95.6% | 0.2% | 38,331 | 80.7% | 0.3% | 60,494 | 58.3% | 0.4% |
| Yearly Center Volume | 0-12 | 144 | 94.4% | 1.9% | 144 | 93.0% | 2.1% | 672 | 81.2% | 2.0% | 1,741 | 56.1% | 2.1% |
| 13-28 | 579 | 97.6% | 0.6% | 579 | 96.0% | 0.8% | 2,200 | 80.7% | 1.1% | 4,293 | 59.8% | 1.5% | |
| 29-47 | 1,160 | 96.2% | 0.6% | 1,160 | 94.5% | 0.7% | 3,270 | 79.3% | 1.0% | 6,135 | 54.5% | 1.4% | |
| 48-81 | 2,235 | 97.9% | 0.3% | 2,235 | 96.1% | 0.4% | 7,605 | 81.6% | 0.6% | 13,811 | 59.3% | 0.8% | |
| 82+ | 8,877 | 97.8% | 0.2% | 8,877 | 95.7% | 0.2% | 24,584 | 80.5% | 0.4% | 34,514 | 58.6% | 0.5% | |