Table 3 Stratified analysis of difference between Na+ measured by AA and ABG
Group mmol/l | Mean difference mmol/l | SD difference mmol/l | Max. difference mmo/l | Min. difference mmol/l | P value |
|---|---|---|---|---|---|
>145 | 3.8 | 2.77 | 8.0 | 1.0 | 0.3847 |
135–145 | 3.4 | 2.35 | 12.0 | 0.0 | 0.0051 |
120–135 | 7.4 | 4.26 | 22.0 | 0.0 | <0.0001 |
<120 | 12.8 | 7.19 | 30.0 | 6.0 | <0.0001 |