Fig. 5From: World-wide variation in incidence of Acinetobacter associated ventilator associated pneumonia: a meta-regressionCaterpillar plots of the group specific (small diamonds) and summary (large open diamond) Acinetobacter VAP incidence per 1000 mechanical ventilation days and 95Â % CI for groups from the North (bottom) and central and outh (top) American studies. For comparison, the summary Acinetobacter VAP incidence (vertical line) derived from the studies from French groups is shown for reference. Studies are listed in Additional file 1: Tables S5. Note that the x axis is a logarithmic scaleBack to article page