| 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 | 4,127 | 93.1% | 0.4% | 4,127 | 88.3% | 0.5% | 11,991 | 74.9% | 0.5% | 22,654 | 56.0% | 0.5% |
| Yearly Center Volume | 0-5 | 157 | 87.9% | 2.6% | 157 | 81.5% | 3.1% | 532 | 70.4% | 2.3% | 1,343 | 54.7% | 2.0% |
| 6-10 | 358 | 91.3% | 1.5% | 358 | 88.0% | 1.7% | 1,623 | 71.0% | 1.4% | 3,118 | 50.8% | 1.4% | |
| 11-16 | 832 | 93.3% | 0.9% | 832 | 89.2% | 1.1% | 2,507 | 73.5% | 1.1% | 4,316 | 54.9% | 1.1% | |
| 17-24 | 892 | 93.8% | 0.8% | 892 | 88.5% | 1.1% | 1,989 | 77.2% | 1.2% | 3,802 | 60.6% | 1.2% | |
| 25+ | 1,888 | 93.4% | 0.6% | 1,888 | 88.6% | 0.7% | 5,340 | 76.3% | 0.7% | 10,075 | 56.6% | 0.8% | |