|  | 30-Day | 1-Year |
---|---|---|---|
 | Need for RRT | mortality in | mortality in |
 | in first | patients | patients |
Date of Tx | 30 days | requiring RRT | requiring RRT |
1986–1990 | 12/71 | 10/12 | 11/12 |
 | (16.9%) | (83.3%) | (91.1%) |
1991–1995 | 29/202 | 19/29 | 24/29 |
 | (14.4%) | (65.5%) | (82.8%) |
1996–10/1999 | 26/135 | 11/26 | 15/26 |
 | (19.3%) | (42.3%) | (57.7%) |
1986–10/1999 | 67/408 | 40/65 | 50/65 |
 | (16.4%) | (61.5%) | (76.9%) |