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Volume 12, Number 3—March 2006

Letter

Hand Sanitizer Alert

Scott A. Reynolds*Comments to Author , Foster Levy†, and Elaine S. Walker*†
Author affiliations: *James H. Quillen Veterans Affairs Medical Center, Mountain Home, Tennessee, USA; †East Tennessee State University, Johnson City, Tennessee, USA

Main Article

Table

CFU per plate before and after treatment with various concentrations of ethanol

Treatment Mean pretreatment CFU (range) Mean posttreatment CFU (range) No. trials |t|* p* Mean change (%)
Tap water 175 (117–234) 206 (100–321) 4 1.25 0.30 +10
40% ethanol 531 (132–1,413) 621 (75–1,733) 5 0.30 0.39 +3
40% gel 246 (51–602) 232 (56–693) 9 0.61 0.56 +53
62% gel 171 (33–563) 12 (1–24) 9 5.73 <0.001 –82
40%→62% gel 473 (114–1,257) 26 (10–48) 5 6.21 0.003 –90

*|t| = result of paired t test; p = probability of |t|.

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