Table 3.

Multivariable analyses associated with serum sodium levels and presence of dysnatremia at admission.

	Multivariable lineal regression				Multivariable logistic regression
	Variable	B coefficient	95% CI	p	Variable	OR	95% CI	p
Hyponatremia a	CKD	−2.16	−3.28–1.05	<0.001	Age ≥70 years	1.57	1.22–2.02	0.001
	Bilateral pneumonia	−0.39	−0.69–0.09	0.012	Male	1.60	1.24–2.08	<0.001
	Tachypnea	−0.08	−1.26–0.25	0.004	–
Hypernatremia b	SC ≥1.5 mg/dl	2.04	1.48–2.62	<0.001	Smoking	3.05	1.47–6.33	0.003
	CVD	0.90	0.07–1.73	0.033	Tachypnea	2.24	1.28–3.95	0.005
	CV	0.54	0.03–1.05	0.037	SC ≥1.5 mg/dl	3.75	2.13–6.60	<0.001
	CKD	−1.71	−2.85–0.57	0.003	Diarrhea	0.38	0.14–0.99	0.047
	Bilateral pneumonia	−0.50	−0.77−0.23	<0.001	–

^aGroup of hyponatremic vs eunatremic patients.

^bGroup of hypernatremic vs eunatremic patients.

CKD, chronic kidney disease; SC, serum creatinine; CVD, cerebrovascular disease; CV, cardiovascular disease.