Table 2.
Adjusted relative risk of nephrectomy
| Early Surgical Intervention* | Conservative Treatment* | RR (95% CI) | |
|---|---|---|---|
| Total/overall | 81 pts | 338 pts | 0.23 (0.15–0.35)† |
| No. renal AAST score (%): | |||
| IV | 50 (62) | 276 (82) | 0.18 (0.09–0.35)‡ |
| V | 31 (38) | 62 (18) | 0.29 (0.16–0.50)‡ |
| No. mechanism of injury (%): | |||
| Blunt | 46 (57) | 311 (92) | 0.22 (0.11–0.25)§ |
| Penetrating | 35 (43) | 24 (7) | 0.24 (0.07–0.84)§ |
| Other | 0 (0) | 3 (1) | — |
| No. United States region (%): | |||
| Midwest | 18 (24) | 84 (26) | 0.11 (0.02–0.85)† |
| Northeast | 3 (4) | 13 (4) | — |
| South | 43 (56) | 180 (55) | 0.26 (0.16–0.42)† |
| West | 12 (16) | 50 (15) | — |
| No. pediatric ICU present (%): | |||
| No | 7 (20) | 5 (3) | — |
| Yes | 29 (80) | 192 (97) | 0.37 (0.22–0.64)† |
| No. max abdominal (nonrenal) AIS: | |||
| 0 | 17 | 159 | 0.14 (0.07–0.30)† |
| 1 | 1 | 15 | — |
| 2 | 19 | 50 | 0.22 (0.05–0.90)† |
| 3 | 14 | 50 | 0.35 (0.17–0.78)† |
| 4 | 14 | 42 | 0.34 (0.15–0.79)† |
| 5 | 16 | 22 | 0.10 (0.01–0.87)† |
*
Numbers may not total because of missing data.
†
Adjusted for age, kidney AAST score and mechanism of injury.
‡
Adjusted for age and mechanism of injury.
§
Adjusted for age and kidney AAST score.