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Table 2 Pearson correlation between the measured pH and various acid–base parameters

From: Connecting two worlds: positive correlation between physicochemical approach with blood gases and pH in pediatric ICU setting

 Whole cohort (n = 1338 samples)
R (sig 2-tailed)
Metabolic subgroup (n = 743 samples)
R (sig 2-tailed)
SID0.230 (< 0.001)0.455 (< 0.001)
SIDa0.227 (< 0.001)0.446 (< 0.001)
SIDe0.398 (< 0.001)0.685 (< 0.001)
SIG− 0.245 (< 0.001)− 0.452 (< 0.001)
Na–Cl gap0.247 (< 0.001)0.473 (< 0.001)
SBE0.526 (< 0.001)0.763 (< 0.001)
Arterial lactate− 0.210 (< 0.001)− 0.292 (< 0.001)
Serum HCO30.413 (< 0.001)0.749 (< 0.001)
Serum Cl− 0.170 (< 0.001)− 0.303 (< 0.001)