Fig. 5

Pooled odds ratios (ORs) with 95% confidence intervals (CIs) from random effect meta-analysis for associations between various patient factors and 30-day readmission after CABG. The black squares and the horizontal lines indicate pooled ORs from random effect meta-analysis of studies investigating the association of 30-day readmission with a specific patient factor and the corresponding 95% CIs, respectively. Individual meta-analysis for each variable presented here can be found in S1-S15 Figures in S2 File