| 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 | 10,551 | 94.3% | 0.2% | 10,551 | 88.4% | 0.3% | 29,604 | 73.8% | 0.3% | 48,827 | 60.0% | 0.3% |
| Yearly Center Volume | 0-9 | 158 | 93.0% | 2.0% | 158 | 88.0% | 2.6% | 506 | 71.8% | 2.5% | 1,466 | 64.2% | 1.7% |
| 10-19 | 370 | 93.8% | 1.3% | 370 | 89.5% | 1.6% | 1,532 | 76.4% | 1.4% | 2,621 | 62.9% | 1.5% | |
| 20-34 | 913 | 95.3% | 0.7% | 913 | 89.6% | 1.0% | 3,184 | 74.7% | 1.0% | 6,720 | 60.0% | 0.9% | |
| 35-56 | 1,687 | 93.5% | 0.6% | 1,687 | 87.8% | 0.8% | 5,371 | 73.8% | 0.7% | 9,408 | 58.9% | 0.8% | |
| 57+ | 7,423 | 94.5% | 0.3% | 7,423 | 88.3% | 0.4% | 19,011 | 73.5% | 0.4% | 28,612 | 59.9% | 0.5% | |