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Table 5 Correlation and agreement of various parameters

From: Correlation and agreement between arterial and venous blood gas analysis in patients with hypotension—an emergency department-based cross-sectional study

Parameters

Interclass correlation coefficient

Limits of agreement

pH

0.96

 ± 0.07

pO2 (mmHg)

0.20

 ± 42.74

pCO2 (mmHg)

0.95

 ± 10.16

HCO3 (mmol/L)

0.97

 ± 3.00

Lactate (mmol/L)

0.96

 ± 1.61

Sodium (mmol/L)

0.92

 ± 6.67

Potassium (mmol/L)

0.91

 ± 0.60

Chloride (mmol/L)

0.94

 ± 5.51

Ionized calcium (mmol/L)

0.70

 ± 0.30

BUN (mg/dL)

0.98

 ± 9.59

Base excess (mmol/L)

0.97

 ± 2.84

Arterial/alveolar oxygen ratio (a/A)

0.72

 ± 0.52

Oxygen saturation (%)

0.01

 ± 37.55