Table 3.

Variance inflation factor (VIF), degrees of freedom (df) and $VI{F}^{\frac{1}{2\times df}}$ for each term of the multivariable model.

	VIF	df	$\mathit{V}\mathit{I}{\mathit{F}}^{\frac{1}{2\times \mathit{d}\mathit{f}}}$
Time to first antibiotics	1.033	1	1.017
Time to volume administration	1.348	1	1.161
Inappropriate empirical antimicrobials	1.665	2	1.136
Gram-negative pathogen	1.747	1	1.322