FIGURE 1.

Adjusted OR (95% CI) for hospital mortalities of the entire cohort of patients (n = 60 944) with serum [Na⁺] variations from 2 to ≥12 mEq/L. Adjusted for age; sex; race; principal diagnosis; CCI score; history of coronary artery disease, congestive heart failure, peripheral vascular disease, stroke, diabetes mellitus, chronic obstructive pulmonary disease and cirrhosis; eGFR; admission serum [Na⁺]; number of serum [Na⁺] measurements and length of hospital stay. x-axis: OR (95% CI) y-axis: Δ[Na⁺] (mEq/L) = peak serum [Na⁺] – nadir serum [Na⁺]