Fig. 3From: Nasal nalbuphine analgesia in prehospital trauma managed by first-responder personnel on ski slopes in Switzerland: an observational cohort studyInitial pain level (NRS) versus pain level after administration of nalbuphine. Footnote: The initial pain level was reported in all patients. Information on pain level after administration of nalbuphine was missing in 19 of 267 patients. The difference in pain level was significant, p < 0.001 (Wilcoxon signed-rank test)Back to article page