Table 1 Demographics and injury characteristics of obese and normal-weight adult trauma patients
Variables | Obese BMI ≥ 30 n = 880 | Normal 25 > BMI ≥ 18.5 n = 5391 | Odds ratio (95 %) | P |
|---|---|---|---|---|
Gender | ||||
 Male | 599(68.1) | 3279(60.8) | 1.4(1.18–1.60) | <0.001 |
 Female | 281(31.9) | 2112(39.2) | 0.7(0.63–0.85) | <0.001 |
Age | 42.8 ± 13.4 | 42.9 ± 13.8 | — | 0.907 |
Comorbidity | ||||
 DM | 136(15.5) | 374(6.9) | 2.5(1.99–3.03) | <0.001 |
 HTN | 249(28.3) | 609(11.3) | 3.1(2.62–3.67) | <0.001 |
 CAD | 13(1.5) | 46(0.9) | 1.7(0.94–3.24) | 0.075 |
 CHF | 8(0.9) | 13(0.2) | 3.8(1.57–9.18) | 0.005 |
 CVA | 15(1.7) | 67(1.2) | 1.4(0.78–2.42) | 0.264 |
 ESRD | 0(0.0) | 5(0.1) | — | 1.000 |
Transpose, n(%) | ||||
 EMS | 341(38.8) | 2007(37.2) | 1.1(0.92–1.24) | 0.387 |
 Private vehicle | 240(27.3) | 1628(30.2) | 0.9(0.74–1.02) | 0.078 |
 Transferred | 299(34.0) | 1756(32.6) | 1.1(0.92–1.24) | 0.411 |
Mechanism, n(%) | ||||
 Motor vehicle driver | 23(2.6) | 98(1.8) | 1.5(0.92–2.30) | 0.112 |
 Motor vehicle passenger | 13(1.5) | 51(0.9) | 1.6(0.85–2.90) | 0.146 |
 Motorcycle driver | 452(51.4) | 2559(47.5) | 1.2(1.01–1.35) | 0.032 |
 Motorcycle pillion | 14(1.6) | 142(2.6) | 0.6(0.34–1.04) | 0.065 |
 Bicycle | 19(2.2) | 166(3.1) | 0.7(0.43–1.12) | 0.135 |
 Pedestrian | 6(0.7) | 94(1.7) | 0.4(0.17–0.89) | 0.020 |
 Fall | 155(17.6) | 1061(19.7) | 0.9(0.72–1.05) | 0.150 |
 Penetrating injury | 39(4.4) | 330(6.1) | 0.7(0.51–1.00) | 0.053 |
 Burn | 28(3.2) | 155(2.9) | 1.1(0.74–1.67) | 0.616 |
 Struck by/against | 131(14.9) | 735(13.6) | 1.1(0.91–1.36) | 0.318 |
Alcohol > 50, n(%) | 62(7.0) | 500(9.3) | 0.7(0.56–0.98) | 0.032 |
Time, n(%) | ||||
 7:00–17:00 | 515(58.5) | 2964(55.0) | 1.2(1.00–1.34) | 0.053 |
 17:00–23:00 | 228(25.9) | 1529(28.4) | 0.9(0.75–1.04) | 0.133 |
 23:00–7:00 | 137(15.6) | 898(16.7) | 0.9(0.76–1.12) | 0.420 |
GCS | 14.5 ± 2.0 | 14.3 ± 2.2 | — | 0.041 |
  ≤ 8 | 27(3.1) | 258(4.8) | 0.6(0.42–0.94) | 0.023 |
 9–12 | 38(4.3) | 192(3.6) | 1.2(0.86–1.74) | 0.268 |
  ≥ 13 | 815(92.6) | 4941(91.7) | 1.1(0.87–1.50) | 0.336 |
AIS, n(%) | ||||
 Head/Neck | 195(22.2) | 1349(25.0) | 0.9(0.72–1.01) | 0.067 |
 Face | 137(15.6) | 1055(19.6) | 0.8(0.62–0.92) | 0.005 |
 Thorax | 130(14.8) | 625(11.6) | 1.3(1.08–1.62) | 0.007 |
 Abdomen | 64(7.3) | 356(6.6) | 1.1(0.84–1.46) | 0.462 |
 Extremity | 659(74.9) | 3952(73.3) | 1.1(0.92–1.28) | 0.325 |
ISS | 8.2 ± 7.3 | 8.2 ± 7.2 | — | 0.790 |
  < 16 | 754(85.7) | 4621(85.7) | 1.0(0.81–1.22) | 0.978 |
 16–24 | 82(9.3) | 541(10.0) | 0.9(0.72–1.18) | 0.510 |
  ≥ 25 | 44(5.0) | 229(4.2) | 1.2(0.85–1.65) | 0.311 |
NISS | 9.6 ± 8.7 | 9.5 ± 8.8 | — | 0.712 |
TRISS | 0.971 ± 0.093 | 0.968 ± 0.102 | — | 0.347 |
Mortality, n(%) | 11(1.3) | 63(1.2) | 1.1(0.56–2.04) | 0.836 |
LOS (days) | 10.6 ± 11.3 | 9.2 ± 10.0 | — | <0.001 |
ICU | ||||
 Patients, n(%) | 149(16.9) | 884(16.4) | 1.0(0.86–1.26) | 0.692 |
   < 16 | 63(7.2) | 353(6.5) | 1.1(0.83–1.45) | 0.499 |
  16–24 | 49(5.6) | 335(6.2) | 0.9(0.65–1.21) | 0.459 |
   ≥ 25 | 37(4.2) | 196(3.6) | 1.2(0.81–1.67) | 0.408 |
 LOS in ICU (days) | 9.2 ± 9.7 | 8.8 ± 11.0 | — | 0.660 |
   < 16 | 7.5 ± 6.3 | 8.7 ± 9.6 | — | 0.355 |
  16–24 | 7.7 ± 8.6 | 7.0 ± 10.6 | — | 0.689 |
   ≥ 25 | 14.2 ± 13.7 | 12.1 ± 13.2 | — | 0.371 |