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Table 3 Possible predictors of therapeutic angiography.

From: Selection of patients with severe pelvic fracture for early angiography remains controversial

Possible predictors Patients Sensitivity
(95% CI)
Specificity
(95% CI)
Positive predictive value
(95% CI)
Negative predictive value
(95% CI)
Likelihood
ratio
P value
  with therapeutic angiography no therapeutic angiography       
Age         
   Age ≥ 55 3/20 20/86 0.85 0.23 0.20 0.87 1.1 0.55
    (0.62-0.97) (0.15-0.34) (0.12-0.31) (0.66-0.97)   
Initial systolic BP         
   < 90 3/20 7/86 0.15 0.92 0.30 0.83 1.84 0.39
    (0.03-0.38) (0.84-0.97) (0.07-0.65) (0.73-0.89)   
Initial BE         
   ≤ -4 15/20 24/83 0.75 0.71 0.38 0.92 2.59 0.0002
    (0.51-0.91) (0.60-0.80) (0.23-0.55) (0.83-0.97)   
   ≤ -6 8/20 14/83 0.40 0.83 0.36 0.85 2.37 0.03
    (0.19-0.64) (0.73-0.90) (0.17-0.59) (0.76-0.92)   
GCS         
   ≤ 13 10/20 26/86 0.50 0.70 0.28 0.85 1.65 0.12
    (0.27-0.73) (0.59-0.79) (0.14-0.45) (0.75-0.93)   
   ≤ 8 5/20 14/86 0.25 0.84 0.26 0.83 1.54 0.35
    (0.09-0.49) (0.74-0.91) (0.09-0.51) (0.73-0.90)   
PC per hour         
   0.5 ≤ 19/20 10/86 0.95 0.88 0.65 0.99 8.17 < 0.0001
    (0.75-1.0) (0.80-0.94) (0.46-0.82) (0.93-1.0)   
   1 ≤ 15/20 7/86 0.75 0.92 0.68 0.94 9.2 < 0.0001
    (0.51-0.91) (0.84-0.97) (0.45-0.86) (0.87-0.98)   
   1.5 ≤ 13/20 3/86 0.65 0.96 0.81 0.92 18.63 < 0.0001
    (0.41-0.85) (0.90-0.99) (0.54-0.96) (0.85-0.97)   
   2 ≤ 11/20 3/86 0.55 0.97 0.79 0.90 15.77 < 0.0001
    (0.32-0.77) (0.90-0.99) (0.49-0.95) (0.82-0.95)   
Pelvic AIS         
   4-5 20/20 54/86 1.0 0.37 0.27 1.0 1.59 0.0004
    (0.83-1.0) (0.27-0.48) (0.17-0.39) (0.89-1.0)   
   5 11/20 11/86 0.55 0.87 0.50 0.89 4.3 0.0001
    (0.32-0.77) (0.78-0.93) (0.28-0.72) (0.80-0.95)   
ISS         
   25 ≤ 17/20 61/86 0.85 0.29 0.22 0.89 1.20 0.27
    (0.62-0.97) (0.20-0.40) (0.13-0.33) (0.72-0.98)   
   50 ≤ 6/20 12/86 0.30 0.86 0.33 0.84 2.15 0.10
    (0.12-0.54) (0.77-0.93) (0.13-0.59) (0.75-0.91)   
  1. BP: Blood Pressure; BE: base excess on presentation; GCS: Glasgow Coma Scale on presentation; PC: packed red blood cell units; AIS: Abbreviated Injury Score