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Univariate analysis
|
Multivariable analysisa
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|---|
|
Variables
|
OR
|
95% CI
|
p-value
|
OR
|
95% CI
|
p-value
|
|---|
|
IPAL (ref. no arterial lesion)
|
6.00
|
1.93–18.64
|
0.002
|
4.48
|
1.03–19.54
|
0.046
|
|
Female gender (ref. male)
|
1.27
|
0.56–2.88
|
0.569
|
1.67
|
0.60–4.61
|
0.325
|
|
Age in categories (ref. 16–39 years)
| | |
0.868
| | |
0.969
|
|
40–49
|
0.59
|
0.17–2.04
|
0.406
|
0.81
|
0.19–3.45
|
0.780
|
|
50–69
|
0.85
|
0.32–2.30
|
0.754
|
0.95
|
0.29–3.16
|
0.939
|
|
≥ 70 years
|
0.97
|
0.27–3.52
|
0.963
|
0.69
|
0.14–3.39
|
0.650
|
|
ISS, continuous
|
1.13
|
1.08–1.19
|
< 0.001
|
–
|
–
|
–
|
|
ISS ≥25 (ref. < 25)
|
14.4
|
4.62–44.85
|
< 0.001
|
12.95
|
3.90–42.95
|
< 0.001
|
|
AO/OTA classification (ref. A)
| | |
0.125
|
–
|
–
|
–
|
|
B
|
2.30
|
0.62–8.51
|
0.214
| | | |
|
C
|
4.67
|
1.04–21.01
|
0.045
| | | |
|
Young and Burgess classification (ref. NC)
| | |
0.267
| | |
0.948
|
|
LC
|
2.14
|
0.57–8.09
|
0.263
|
1.49
|
0.33–6.67
|
0.599
|
|
APC
|
2.42
|
0.46–12.85
|
0.298
|
1.76
|
0.20–15.59
|
0.611
|
|
VS & CM
|
4.67
|
0.99–22.01
|
0.052
|
1.60
|
0.26–9.87
|
0.612
|
- After adjustment for sex and age, the presence of an IPAL was significantly associated with greater odds of pre-hospital hemodynamic instability independently of the types of PRI, as was ISS ≥25
- OR: odds ratio; 95% CI: 95% confidence interval; IPAL: intra-pelvic arterial lesion; ISS: Injury Severity Score; NC: not classifiable; LC: lateral compression; APC: anteroposterior compression; VS: vertical shear; CM: combined mechanism
- a Hosmer-Lemeshow test, p = 0.118. The variance inflation factors (VIF) are all below 1.5, suggesting no collinearity
