Table 2 Univariate logistic regression model to test association of AKI and initial serum chloride ([CL^-]₀), maximal serum chloride in first 48 hours ([Cl^–]_max), and increase in serum chloride (Δ[Cl^-] = [Cl^-]_max–[CL^-]₀)

[CL^-]₀

1.01 (0.97–1.05)

0.478

0.99 (0.95–1.03)

0.562

[Cl^-]_max

1.14 (1.08–1.20)

<0.001^a

1.07 (1.02–1.12)

0.006^a

Δ[CL^-]

1.25 (1.16–1.36)

<0.001^a

1.14 (1.07–1.21)

<0.001^a