Table 5 Results of bi-variable and multivariable Cox proportional hazard regression model

Age

1.06(1.03–1.08)

1.05(1.02–1.08)

Injury

Mild

1

1

Severity

Moderate

2.86(0.99–10.28)

1.29(0.87–1.92)

Sever

6.56(2.31–18.63)

1.46(1.02–2.09)

Pupillary

Both reactive

1

1

Reactivity

Both un-reactive

6.67(3.05–15.04)

4.82(1.82–12.72)

One reactive

2.92(1.40–6.08)

1.64(0.67–4.02)

Mannitol

Yes

1.85(1.03–3.35)

1.11(0.55–2.26)

No

1

1

ICU

Yes

3.15(1.75–5.91)

0.96(0.39–2.33)

No

1

1

DM

Yes

2.45(1.34–4.45)

0.87(0.41–1.83)

No

1

1

Systolic

Hypotension

5.55(3.04–10.13)

3.45(1.71–6.96)

Blood pressure

Normal

1

1

Hypertension

1.86(0.64–5.40)

1.31(0.41–4.23)

Pneumonia

Yes

3.62(2.04–6.45)

1.78(0.77–4.11)

(Aspiration)

No

1

1

Cerebral

Yes

2.35(1.32–4.18)

0.87(0.41–1.84)

Contusion

No

1

1

Length of Hospital stay

1.03(1.01–1.05)

0.97(0.94–1.01)