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Table 3 Multiple regression models showing the combined effect of hemoglobin, base excess and Injury Severity Score upon plasma fibrinogen.

From: Estimation of plasma fibrinogen levels based on hemoglobin, base excess and Injury Severity Score upon emergency room admission

Model

Variable

Term

Ratio (95% CI)

P value

R2

Adj. R2

1

Hb*

Linear term

3.21 (2.20, 4.68)

<0.001

0.47

0.46

  

Squared term

0.84 (0.78, 0.92)

<0.001

  
 

BE*

Linear term

1.25 (1.19, 1.30)

   

2

BE*

Linear term

1.33 (1.26, 1.39)

<0.001

0.38

0.38

 

ISS**

Linear term

0.71 (0.63, 0.80)

<0.001

  
  

Squared term

1.03 (1.01, 1.04)

   

3

Hb*

Linear term

4.49 (3.19, 6.34)

<0.001

0.47

0.47

  

Squared term

0.79 (0.73, 0.86)

   
 

ISS**

Linear term

0.75 (0.68, 0.83)

<0.001

  
  

Squared term

1.02 (1.01, 1.04)

   

4

Hb*

Linear term

3.37 (2.34, 4.87)

<0.001

0.51

0.51

  

Squared term

0.83 (0.76, 0.90)

   
 

BE*

Linear term

1.20 (1.14, 1.25)

<0.001

  
 

ISS**

Linear term

0.73 (0.66, 0.82)

<0.001

  
  

Squared term

1.03 (1.02, 1.04)

   
  1. *Ratios reported for a 5-unit increase in predictor variable; **ratios reported for a 10-unit increase in predictor variable. Adj., adjusted; BE, base excess; CI, confidence interval; Hb, hemoglobin; ISS, Injury Severity Score.
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