Table 3.

Univariate analysis using modified least squares regression.

	Contaminants (%)	Risk difference	95% CI	P
Topical antiseptics
PVI	16.2	15.4	11.2–19.6	< 0.001
ACHX	0.8	-
Blood sampling sites
CV Other	21.2	19.0	4.9–33.2	0.009
Femoral	18.0	15.9	10.8–21.0	< 0.001
Venous	2.2	-

ACHX, 1.0% alcohol/chlorhexidine gluconate; CI confidence interval; CV Other, blood culture sample from recently inserted central venous, venous and arterial catheters, implanted port; Femoral, femoral artery or vein; PVI, 10% aqueous povidone-iodine; Venous, venipuncture without catheter insertion.