Fig. 1
From: Fluid therapy in the perioperative setting—a clinical review
Meta-analysis of number of patients developing complications after abdominal surgery in studies using GDT. Some studies do not provide information on complications and are therefore excluded in the meta-analysis. Test for heterogeneity is significant, and the results should be interpreted with caution. Size of data marker corresponds to weighting of each study and RR with 95 % CI. Diamonds sum up the overall effect estimate. RR <1 favors GDT. Heterogeneity: tau2 = 0.04; chi2 = 20.41; df = 11 (p = 0.04); I 2 = 46 %. Test for overall effect: z = 4.56 (p < 0.0001)