Table 2.
Odds ratios for 30-day mortality according to the concentration of serum sodium
| Univariate | Multivariatea | |||
|---|---|---|---|---|
| Group | OR (95 % CI) | P | OR (95 % CI) | P |
| Moderate to severe hypoatremia | 1.91 (1.197–3.033) | 0.007 | 3.61 (1.438–9.049) | 0.006 |
| Mild hyponatremia | 1.65 (1.047–2.610) | 0.031 | 2.45 (1.051–5.705) | 0.038 |
| Normonatremia | 1 (Reference) | 1 (Reference) | ||
| Mild hypernatremia | 1.03 (0.560–1.908) | 0.917 | 1.06 (0.461–2.438) | 0.890 |
| Moderate to severe hypernatremia | 2.32 (1.203–4.453) | 0.012 | 2.94 (1.119–7.722) | 0.029 |
aAdjusted for age, sex, enrollment year, weight, cause of acute kidney injury, dialysis dose, need for mechanical ventilation, use of vasoactive drugs, chronic kidney disease, Charlson Comorbidity Index, APACHE II score, creatinine, albumin, urine output, fluid balance, and onset of dysnatremia
OR odds ratio, CI confidence interval