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Table 2 Multivariate analysis

From: Mild therapeutic hypothermia shortens intensive care unit stay of survivors after out-of-hospital cardiac arrest compared to historical controls

 

Coefficient

5% CI

95% CI

P value

Start model (ICU LOS)

    

(Intercept)

7.84

-17.32

33.01

0.543

Gender female

-4.72

-14.12

4.67

0.328

Age

0.08

-0.19

0.36

0.553

APACHE II score

0.66

0.18

1.13

0.008

Hypothermia treatment

-10.63

-17.93

-3.32

0.006

Bystander CPR

-1.69

-9.57

6.20

0.676

Ventricular fibrillation

0.95

-6.71

8.61

0.809

Time to ROSC

-0.12

-0.73

0.49

0.706

Final model (ICU LOS)

    

(Intercept)

10.80

-0.64

22.24

0.068

APACHE II score

0.63

0.19

1.07

0.006

Hypothermia treatment

-10.66

-17.73

-3.59

0.004

Start model (time on ventilator)

    

(Intercept)

161.45

-409.67

732.58

0.581

Gender female

2.11

-212.22

216.44

0.985

Age

0.67

-5.40

6.74

0.830

APACHE II score

13.40

3.07

23.74

0.013

Hypothermia treatment

-182.72

-342.75

-22.69

0.028

Bystander CPR

-73.32

-245.39

98.75

0.407

Time to ROSC

-5.16

-19.03

8.71

0.469

Ventricular fibrillation

22.19

-145.07

189.46

0.780

Final model (time on ventilator)

    

(Intercept)

107.25

-142.68

357.17

0.403

APACHE II score

13.07

3.58

22.57

0.009

Hypothermia treatment

-179.41

-333.73

-25.09

0.026

  1. Regression coefficients, associated confidence intervals, and P values of start multiple regression model and final model after stepwise backward selection. Sign (- or +) indicates negative or positive effect on the dependent variable. APACHE II, Acute Physiology and Chronic Health Evaluation II; CI, confidence interval; CPR, cardiopulmonary resuscitation; ICU LOS, intensive care unit length of stay; ROSC, return of spontaneous circulation.