Effect of topical chlorhexidine gluconate on the number of Staphylococcus aureus in oral samples. Mean in log scale with 95% confidence intervals. The confidence intervals were obtained based on data at each time point. Triangle = placebo; Square = chlorhexidine gluconate (CHX) once a day; Circle = CHX twice a day.
Scannapieco et al. Critical Care 2009 13:R117 doi:10.1186/cc7967