Table 3 Odds ratios of each variable for nephrectomy among patients with blunt renal trauma
From: Trends and outcomes of blunt renal trauma management: a nationwide cohort study in Japan
| Â | Nephrectomy | |||
|---|---|---|---|---|
% | n/N | Adjusted OR (95% CI) | P value | |
Age group | ||||
 < 20 years | 3.5 | (21/607) | Reference | – |
 20–64 years | 4.3 | (87/2017) | 1.33 (0.77 to 2.38) | 0.327 |
 ≥ 65 years | 3.0 | (28/926) | 1.37 (0.68 to 2.78) | 0.376 |
Sex | ||||
 Male | 3.6 | (94/2635) | 0.81 (0.51 to 1.28) | 0.354 |
 Female | 4.6 | (42/915) | Reference | – |
Mechanism | ||||
 Car accident | 3.2 | (18/556) | Reference | – |
 Motorcycle accident | 4.9 | (39/797) | 1.10 (0.56 to 2.25) | 0.782 |
 Bicycle accident | 2.2 | (6/271) | 0.89 (0.30 to 2.39) | 0.832 |
 Pedestrian accident | 4.8 | (17/353) | 1.25 (0.54 to 2.89) | 0.599 |
 Fall from height | 4.7 | (29/616) | 1.40 (0.69 to 2.93) | 0.359 |
 Fall down stairs | 2.2 | (7/323) | 0.43 (0.14 to 1.14) | 0.101 |
 Fall on the ground | 2.3 | (6/265) | 0.49 (0.16 to 1.37) | 0.189 |
 Sports-related injury | 1.4 | (2/145) | 0.32 (0.05 to 1.30) | 0.156 |
 Others | 5.4 | (12/224) | 0.99 (0.40 to 2.40) | 0.981 |
Shock on arrival | ||||
 (+) | 11.1 | (45/405) | 1.98 (1.21 to 3.20) | 0.006 |
 (−) | 2.9 | (91/3145) | Reference | – |
Concomitant injury | ||||
 Head/neck | ||||
  (+) | 3.3 | (44/1341) | 0.87 (0.54 to 1.39) | 0.556 |
  (−) | 4.2 | (92/2209) | Reference | – |
 Thorax | ||||
  (+) | 3.2 | (74/2298) | 0.46 (0.29 to 0.75) | 0.002 |
  (−) | 5.0 | (62/1252) | Reference | – |
 Pelvis/lower-extremity | ||||
  (+) | 3.8 | (53/1399) | 1.00 (0.63 to 1.59) | 0.998 |
  (−) | 3.9 | (83/2151) | Reference | – |
Concomitant intra-abdominal organ injury | ||||
 Liver | ||||
  (+) | 4.0 | (39/972) | 1.37 (0.84 to 2.21) | 0.197 |
  (−) | 3.8 | (97/2578) | Reference | – |
 Spleen | ||||
  (+) | 6.7 | (44/655) | 2.07 (1.27 to 3.33) | 0.003 |
  (−) | 3.2 | (92/2895) | Reference | – |
 Pancreas | ||||
  (+) | 9.0 | (7/78) | 0.74 (0.25 to 1.90) | 0.545 |
  (−) | 3.7 | (129/3472) | Reference | – |
 Gastrointestinal tract | ||||
  (+) | 10.2 | (10/98) | 1.14 (0.45 to 2.70) | 0.771 |
  (−) | 3.7 | (126/3452) | Reference | – |
 Isolated renal trauma | ||||
  (+) | 3.9 | (20/509) | 0.84 (0.41 to 1.73) | 0.642 |
  (−) | 4.1 | (126/3041) | Reference | – |
AAST grade | ||||
 I | 0.1 | (2/1408) | Reference | – |
 II | 0 | (0/358) | 0.00 (0.00 to 0.00) | 0.981 |
 III | 1.9 | (20/1039) | 18.40 (5.31 to 115.88) | < 0.001 |
 IV | 10.2 | (61/596) | 113.89 (34.83 to 701.57) | < 0.001 |
 V | 35.6 | (53/149) | 468.17 (137.15 to 2941.20) | < 0.001 |
Management | ||||
 Emergency abdominal angiography | ||||
  (+) | 2.9 | (34/1189) | 0.28 (0.18 to 0.44) | < 0.001 |
  (−) | 4.3 | (102/2361) | Reference | – |
3-year increase in time period | – | – | 0.77 (0.65 to 0.91) | 0.002 |