| 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 | 11,458 | 91.2% | 0.3% | 11,458 | 84.3% | 0.3% | 32,307 | 68.4% | 0.3% | 53,673 | 54.1% | 0.3% |
| Yearly Center Volume | 0-9 | 170 | 89.4% | 2.4% | 170 | 84.1% | 2.8% | 551 | 67.2% | 2.5% | 1,613 | 59.0% | 1.6% |
| 10-19 | 406 | 91.6% | 1.4% | 406 | 86.9% | 1.7% | 1,667 | 71.8% | 1.4% | 2,797 | 57.2% | 1.5% | |
| 20-34 | 977 | 92.9% | 0.8% | 977 | 86.3% | 1.1% | 3,406 | 70.7% | 1.0% | 7,288 | 54.7% | 0.9% | |
| 35-56 | 1,800 | 90.7% | 0.7% | 1,800 | 84.5% | 0.9% | 5,796 | 69.3% | 0.7% | 10,245 | 54.1% | 0.7% | |
| 57+ | 8,105 | 91.1% | 0.3% | 8,105 | 83.9% | 0.4% | 20,887 | 67.6% | 0.4% | 31,730 | 53.4% | 0.4% | |