Fig. 1From: Opioid-free versus opioid-based anesthesia in pancreatic surgeryLongitudinal comparison of pain control after pancreatic surgery. A Numerical Rating Scale (NRS); B Cumulative Morphine Milligram Equivalent (MME). OFA: Opioid-free anesthesia; OBA: Opioid-based anesthesia (ns: P > 0.05; *: P < 0.05; **: P < 0.01; ***: P < 0.001; ****: P < 0.0001)Back to article page