Table 1.
Renal trauma patient and injury characteristics
| Underweight | p | Normal Weight | Overweight | p | Class I obesity | p | Class II obesity | p | Class III obesity | p | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| N (%) | 370 (2.4) | 5343 (35.2) | 4970 (32.7) | 2600 (17.1) | 1043 (6.8) | 855 (5.6) | |||||
| Age | 25 (21–39) | 0.0004 | 28 (22–43) | 35 (25–53) | <0.0001 | 41 (27–57) | <0.0001 | 42 (28–57) | <0.0001 | 38 (27–52) | <0.0001 |
| Sex (Male) | 218 (58.9) | <0.001 | 3964 (74.2) | 3964 (79.8) | <0.001 | 1968 (75.8) | 0.134 | 778 (74.6) | 0.786 | 558 (65.3) | <0.001 |
| Blunt | 311 (84) | 0.87 | 4498 (84.3) | 4202 (84.7) | 0.613 | 2234 (86.1) | 0.041 | 897 (86.1) | 0.142 | 744 (87) | 0.046 |
| AAST grade | 0.712 | <0.001 | <0.001 | <0.001 | < 0.001 | ||||||
| I | 64 (17.3) | 949 (17.7) | 1112 (22.3) | 747 (28.7) | 304 (29.1) | 264 (30.8) | |||||
| II | 86 (23.2) | 1351 (25.2) | 1255 (25.2) | 653 (25.1) | 251 (24) | 244 (28.5) | |||||
| III | 120 (32.4) | 1552 (29.1) | 1391 (27.9) | 657 (25.2) | 285 (27.3) | 201 (23.5) | |||||
| IV | 75 (20.2) | 1135 (21.2) | 912 (18.3) | 410 (15.7) | 145 (13.9) | 100 (11.7) | |||||
| V | 25 (6.7) | 356 (6.6) | 300 (6) | 133 (5.1) | 58 (5.5) | 46 (5.38) | |||||
| HGRT | 220 (59.4) | 0.346 | 3043 (56.9) | 2603 (52.3) | <0.001 | 1200 (46.1) | <0.001 | 488 (46.7) | <0.001 | 347 (40.5) | <0.001 |
| ISS | 22 (14–33) | 0.157 | 20.5 (13–29) | 21 (14–29) | 0.024 | 21 (13–29) | 0.733 | 20 (13–29) | 0.739 | 21 (13–29) | 0.603 |
| GCS | 15 (14–15) | 0.018 | 15 (14–15) | 15 (14–15) | 0.0015 | 15 (14–15) | 0.934 | 15 (14–15) | 0.188 | 15 (14–15) | 0.908 |
| Traumatic brain injury | 102 (27.6) | 0.045 | 1229 (23) | 1253 (25.2) | 0.009 | 590 (22.7) | 0.758 | 217 (20.8) | 0.121 | 198 (23.2) | 0.92 |
| Pulse rate | 97.4 (23.1) | 0.003 | 93.7 (23) | 95.8 (23.2) | <0.0001 | 97.4 (23.7) | <0.0001 | 100.4 (24.1) | <0.0001 | 100.9 (23.7) | <0.0001 |
| Hypotension | 25 (6.7) | 0.458 | 418 (7.8) | 476 (9.6) | 0.002 | 228 (8.8) | 0.148 | 88 (8.4) | 0.502 | 82 (9.6) | 0.078 |
| Transfusion | 160 (43.2) | 0.66 | 2248 (42.1) | 2242 (45.1) | 0.002 | 1164 (44.8) | 0.023 | 465 (44.6) | 0.134 | 389 (45.5) | 0.06 |
| Bleeding disorder | 3 (0.8) | 0.23 | 86 (1.6) | 130 (2.6) | <0.001 | 90 (3.5) | <0.001 | 33 (3.2) | 0.001 | 23 (2.7) | 0.026 |
| Diabetes Mellitus | 6 (1.6) | 0.313 | 131 (2.4) | 263 (5.3) | <0.001 | 226 (8.7) | <0.001 | 154 (14.8) | <0.001 | 120 (14) | <0.001 |
| Cirrhosis | 0 | 0.99 | 14 (0.3) | 11 (0.2) | 0.675 | 9 (0.4) | 0.513 | 6 (0.6) | 0.122 | 6 (0.7) | 0.047 |
| Disseminated cancer | 0 | 0.99 | 4 (0.07) | 6 (0.1) | 0.536 | 3 (0.1) | 0.69 | 3 (0.3) | 0.091 | 2 (0.23) | 0.196 |
| Chronic kidney disease | 3 (0.8) | 0.08 | 13 (0.2) | 19 (0.4) | 0.205 | 11 (0.4) | 0.171 | 7 (0.7) | 0.033 | 3 (0.4) | 0.476 |
| Congestive heart failure | 1 (0.3) | 0.99 | 17 (0.3) | 39 (0.8) | 0.002 | 27 (1.04) | <0.001 | 10 (0.9) | 0.004 | 9 (1.1) | 0.006 |
| Previous cardiovascular event | 3 (0.8) | 0.743 | 37 (0.7) | 66 (1.3) | 0.001 | 26 (1) | 0.147 | 11 (1.1) | 0.215 | 9 (1.1) | 0.255 |
| Level I trauma center | 158 (42.7) | 0.482 | 2382 (44.6) | 2247 (45.2) | 0.521 | 1202 (46.2) | 0.166 | 475 (45.5) | 0.568 | 423 (49.5) | 0.008 |
| Intervention | 33 (8.9) | 0.455 | 541 (10.1) | 511 (10.2) | 0.793 | 210 (8.1) | 0.003 | 80 (7.6) | 0.014 | 59 (6.9) | 0.003 |
| Nephrectomy | 22 (5.9) | 0.448 | 373 (6.9) | 332 (6.6) | 0.545 | 166 (6.3) | 0.321 | 49 (4.7) | 0.007 | 40 (4.6) | 0.012 |
| Nephrorrhaphy | 9 (2.4) | 0.608 | 109 (2) | 125 (2.5) | 0.106 | 36 (1.3) | 0.041 | 19 (1.8) | 0.645 | 14 (1.6) | 0.433 |
| Angioembolization | 2 (0.5) | 0.184 | 72 (1.4) | 72 (1.4) | 0.662 | 16 (0.6) | 0.003 | 14 (1.3) | 0.989 | 5 (0.6) | 0.062 |
| Mortality | 24 (6.5) | 0.081 | 241 (4.5) | 289 (5.8) | 0.003 | 133 (5.1) | 0.232 | 70 (6.7) | 0.003 | 60 (7) | 0.002 |
Reference category for all p values
All continuous variables are expressed as median (IQR) except for pulse rate as mean (standard deviation)
All categorical variables are expressed as frequency (%)
Including previous myocardial infarction, cerebrovascular accident/stroke