Figure 2.

Forest plot of off-pump versus on-pump CABG on the incidence of AKI. Peto fixed-effect model and DerSimonian & Laird random-effects model (REM) estimate of OR. Dark gray lines correspond to studies with zero events in one arm whereas light gray lines correspond to studies with zero events in both arms. The quality score is based on the Jadad scale, ranging from 0 to 5. *No events in one group: The displayed estimate and CI were calculated by adjusting the numbers of events and nonevents. ^†Study omitted from meta-analyses because there were no events in both groups: The displayed estimate and CI were calculated by adjusting the numbers of events and nonevents.