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Table 2 Bivariate modified Poisson regression analysis to determine the factors that influence unfavorable outcomes

From: Thirty-day clinical outcome of traumatic brain injury patients with acute extradural and subdural hematoma: a cohort study at Mulago National Referral Hospital, Uganda

Variable

Category

IRR

95%CI

p value

Cause of trauma

RTA

1

  

Assault

0.76

0.37–1.64

0.508

Fall

0.85

0.24–3.06

0.803

Others

2.27

0.91–5.63

0.078

Oxygen saturation

< 90%

1

  

> 90%

0.45

0.23–0.88

0.019

Systolic BP

< 90

1

  

> 48

0.58

0.22–1.48

0.253

GCS

Mild TBI

1

  

Moderate TBI

0.68

0.48–0.97

< 0.034

Severe TBI

0.35

0.19–0.62

< 0.001

Diagnosis

ASDH

1

  

AEDH

0.32

0.18–0.58

0.001