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Table 2 Two multivariable logistic models using UO as continuous and dummy variables

From: Fluid intake-related association between urine output and mortality in acute respiratory distress syndrome

Model 1

Model 2

Variables

Adjusted odds ratio (95% CI)

P

Variables

Adjusted odds ratio (95% CI)

P

UO

0.98 (0.98–0.99)

0.002

UO quartile 1

Ref.

 

Low tidal volume intervention

0.67 (0.50–0.90)

0.009

UO quartile 2

0.69 (0.46–1.03)

0.072

Leukemia

3.95 (1.31–11.8)

0.014

UO quartile 3

0.51 (0.34–0.78)

0.002

Solid tumour

3.26 (1.14–9.34)

0.027

UO quartile 4

0.46 (0.30–0.70)

<  0.001

Respiratory rate

1.01 (1.00–1.03)

0.015

Low tidal volume intervention

0.68 (0.51–0.92)

0.013

Platelet count (10^9/L)

0.99 (0.99–0.99)

0.004

Leukemia

3.26 (1.09–9.73)

0.033

PaO2/FiO2

0.99 (0.99–0.99)

0.003

Solid tumour

3.57 (1.24–10.25)

0.018

   

Respiratory rate

1.01 (1.00–1.03)

0.013

   

Platelet count (10^9/L)

0.99 (0.99–0.99)

0.005

   

PaO2/FiO2

0.99 (0.99–0.99)

0.004

  1. UO was used as a continuous variable in Model 1 and was divided into four quartiles in Model 2. The VIF value were 2.63 and 2.46 for Model 1 and Model 2, respectively
  2. Abbreviation: UO Urine output