| 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 | 65 | 80.0% | 5.0% | 65 | 73.7% | 5.5% | 190 | 45.2% | 4.9% | 433 | 25.7% | 3.3% |
| Yearly Center Volume | 0-4 | 0 | - | - | 0 | - | - | 24 | 34.9% | 11.5% | 70 | 0.0% | 0.0% |
| 5-7 | 7 | 71.4% | 17.1% | 7 | 57.1% | 18.7% | 4 | + | + | 40 | 28.7% | 9.2% | |
| 8-13 | 9 | 88.9% | 10.5% | 9 | 77.8% | 13.9% | 31 | 39.8% | 11.7% | 54 | 35.5% | 7.9% | |
| 14-22 | 11 | 81.8% | 11.6% | 11 | 72.7% | 13.4% | 35 | 50.1% | 8.7% | 51 | 14.9% | 11.5% | |
| 23+ | 38 | 78.9% | 6.6% | 38 | 76.2% | 6.9% | 96 | 52.7% | 6.7% | 218 | 28.6% | 4.5% | |