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Table 2 Classified analysis of the differences in the sodium ion levels between the arterial blood gas analyzer (ABGA) and the autoanalyzer

From: Comparison of sodium ion levels between an arterial blood gas analyzer and an autoanalyzer in preterm infants admitted to the neonatal intensive care unit: a retrospective study

Indirect Method (mmol/L)

Sodium concentration (Auto-analyzer – ABGA)

Cases (N = 1041)

Mean

P- value

<135

146

1.0 ± 2.7

<0.001

135–145

815

4.2 ± 2.9

<0.001

>145

80

9.9 ± 3.7

<0.001

Total

1041

4.2 ± 3.6

<0.001

  1. Data are presented as mean ± SD