Figure Legends
Figure 1. PRISMA flow diagram. The diagram shows the study selection
process and provides reasons for exclusion for the records screened.
PRISMA, Preferred Reporting Items for Systematic Reviews and
Meta-Analyses.
Figure 2. Network diagram comparing different regional anesthesia
techniques in terms of intravenous morphine equivalents (mg) in the
first 24 h.
Figure 3. Forest plot for the comparison of intravenous morphine
equivalents (mg) in the first 24 h. Comparison of results expressed in
intravenous morphine equivalents (mg) through meand difference (MD)
between subgroups.