| 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 | 73.8% | 5.5% | 188 | 46.5% | 4.8% | 425 | 28.3% | 3.2% |
| Yearly Center Volume | 0-4 | 0 | - | - | 0 | - | - | 24 | 34.9% | 11.5% | 68 | 11.0% | 8.4% |
| 5-7 | 7 | 71.4% | 17.1% | 7 | 57.1% | 18.7% | 4 | + | + | 38 | 33.2% | 9.2% | |
| 8-13 | 9 | 88.9% | 10.5% | 9 | 77.8% | 13.9% | 31 | 40.9% | 11.4% | 53 | 39.0% | 7.6% | |
| 14-22 | 11 | 81.8% | 11.6% | 11 | 72.7% | 13.4% | 35 | 50.1% | 8.7% | 51 | 28.4% | 10.2% | |
| 23+ | 38 | 78.9% | 6.6% | 38 | 76.3% | 6.9% | 94 | 55.0% | 6.6% | 215 | 30.3% | 4.4% | |