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Table 2 p values (Wilcoxon test) for the reduction of aerobic and anaerobic flora by chlorhexidine-alcohol (CHG-ALC) and povidone-iodine-alcohol (PVP-I-ALC) after 2.5 and 30 min contact time; immediate and 3-h values

From: Comparison of the antimicrobial efficacy of povidone-iodine-alcohol versus chlorhexidine-alcohol for surgical skin preparation on the aerobic and anaerobic skin flora of the shoulder region

Preparation

CHG-ALC 2.5 min contact

CHG-ALC 30 min contact

Immediate

After 3 h

Immediate

After 3 h

Aerobic values

PVP-I-ALC

2.5 min contact

0.04

0.08

0.13

0.14

PVP-I-ALC

30 min contact

0.78

0.53

0.54a

0.95

Anaerobic values

PVP-I-ALC

2.5 min contact

< 0.01

0.31

< 0.01

0.28

PVP-I-ALC

30 min contact

< 0.01

< 0.01

< 0.01

0.06b

  1. aThis comparison was numerically in favor of CHG-ALC; all other comparisons were numerically in favor of PVP-I-ALC
  2. bWhen samples without detectable CFU were excluded from the analysis of 3-h post-values, the p value was 0.03
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Antimicrobial Resistance & Infection Control

ISSN: 2047-2994

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