Table 3 Adjusted odds ratios for neurosurgical procedures. Multiple logistic regression run on 2/3 training set (n = 33,327)

(Intercept)

0.0893

(0.0099 – 0.78)

0.03

Age (years)

1.002

(0.999 – 1.01)

0.18

Anticoagulation Disorder

0.853

(0.66 – 1.09)

0.21

ED GCS

0.894

(0.781 – 1.03)

0.11

ED Systolic Blood Pressure

1.004

(1.002 – 1.01)

<0.001

ED Pulse

0.99

(0.986 – 0.993)

<0.0001

ED Respiratory Rate

0.962

(0.944 – 0.98)

<0.0001

ISS Category (vs. ISS 0–6)

 ISS 7-11

2.35

(1.44 – 4.09)

<0.01

 ISS 12-18

3.37

(2.06 – 5.86)

<0.0001

 ISS 19-27

18.9

(11.6 – 33)

<0.0001

 ISS >27

7.01

(3.79 – 13.4)

<0.0001

Injury Category (vs. Contusion)

 Isolated SAH

0.95

(0.64 – 1.41)

0.79

 Isolated SDH

4.9

(3.61 – 6.84)

<0.0001

 Isolated EDH

6.42

(4.15 – 9.97)

<0.0001

 Multiple Injury Types

2.34

(1.7 – 3.29)

<0.0001