Table 2 Odds ratios for the primary outcome 7-day mortality

7-day Mortality

Lactate level (continuous)

1.16 (1.11–1.20)

1.18 (1.14–1.23)

Lactate group (mmol/L)

 < 2.0 (reference)

1

1

2.0–3.9

1.30 (0.75–2.24)

1.37 (0.78–2.42)

 ≥ 4.0

3.77 (2.44–5.85)

3.85 (2.43–6.11)

pH group

7.35–7.45 (reference)

1

1

 < 7.35

4.82 (3.00–7.75)

4.68 (2.87–7.63)

 > 7.45

1.33 (0.65–2.72)

1.37 (0.66–2.85)

CO₂ group (kPa)

4.3–6.0 (reference)

1

1

 < 4.3

2.54 (1.45–4.46)

2.72 (1.51–4.92)

 > 6.0

2.62 (1.70–4.03)

2.49 (1.59–3.89)