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Table 4 Subgroup analysis of patients with high and low UO/FI ratios

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

Subgroup with UO/FI ≤ 0.5 (Model A, n = 421)

Subgroup with UO/FI > 0.5 (Model B, n = 414)

Variables

Adjusted odds ratio (95% CI)

P

Variables

Adjusted odds ratio (95% CI)

P

UO

0.97 (0.96–0.99)

0.006

UO

0.99 (0.98–1.00)

0.504

Low tidal volume intervention

0.80 (0.53–1.20)

0.295

Low tidal volume intervention

0.57 (0.36–0.88)

0.013

Leukemia

5.83 (1.17–29.1)

0.031

Leukemia

1.92 (0.35–10.39)

0.447

Solid tumour

2.15 (0.42–10.82)

0.351

Solid tumour

4.21 (1.00–17.50)

0.048

Respiratory rate

1.01 (0.99–1.03)

0.165

Respiratory rate

1.02 (1.00–1.04)

0.034

Platelet count (10^9/L)

0.99 (0.99–1.00)

0.161

Platelet count (10^9/L)

0.99 (0.99–0.99)

0.032

PaO2/FiO2

0.99 (0.99–0.99)

0.039

PaO2/FiO2

0.99 (0.99–0.99)

0.039

  1. The p value for interaction between UO and UO/FI ratio was 0.044. The VIF value were 2.69 and 2.83 for Model A and Model B, respectively
  2. Abbreviations: UO Urine output, UO/FI Urine output/fluid intake