Statistics
A product is considered effective for surgical disinfection
if the mean of the RF of both the immediate and sustained
effect is not significantly lower than the corresponding
mean RF of the reference treatment [9]. Differences in the
immediate and sustained effects between the reference
treatment and the three variations of product application
were investigated by non-parametric Friedman tests, followed
by the Wilcoxon-Wilcox procedure for pairwise
comparisons. A p-value < 0.05 was chosen to indicate a
significant difference.