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Fig. 2 | BMC Anesthesiology

Fig. 2

From: Propofol vs. inhalational agents to maintain general anaesthesia in ambulatory and in-patient surgery: a systematic review and meta-analysis

Fig. 2

Forest plot of PONV for propofol and inhalational anaesthetics of the primary meta-analysis. Events refer to the number of patients with PONV. The risk ratio was used as effect size (PONV risk for the propofol group divided by PONV risk for the control group). Random effect models were applied to calculate a common estimate using the Mantel-Haenszel approach (Abbreviations: M-H Mantel-Haenszel approach, CI confidence interval)

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