Fig 1.
Flow diagram showing the study identification, screening and inclusion process.
Table 1.
Characteristics of studies.
Table 2.
Oxford quality scale.
Fig 2.
Relative risks (RR) for the effect of treatment with chlorhexidine on the incidence of bacteremia compared to control groups. Fixed-effect inverse variance weighted meta-analysis.
Fig 3.
L’Abbé plot of bacteremia rates in the chlorhexidine and control groups.
The symbol size represents the sample size. The dotted line represents the no-effect line with identical rates in both groups. The solid line corresponds to a pooled relative risk of 0.895. (RR) = Relative risks.
Fig 4.
Galbraith (radial) plot for trials that used chlorhexidine for the prevention of post-extraction bacteremia.
It can be observed that all studies are within the confidence intervals. (RR) = Relative risks.
Table 3.
Number needed to treat (NNT) or number needed to harm (NNH) of each study and the global NNT.
Fig 5.
Funnel plot of standard error (in (relative risk)) against in(relative risk).
Fig 6.
Cumulative meta-analysis by year of publication.
Cumulative plot showing the time tendency of relative risk for the incidence of bacteremia.
Fig 7.
Analysis of influence or sensitivity analysis.
Sensitivity analysis showing the influence of individual studies on the summary relative risk. The results are computed by the sequential removal of individual studies. The two ends of every dotted line represent the 95% confidence interval.