Fig. 2
From: The effects of tramadol on postoperative shivering after sevoflurane and remifentanil anesthesia
Postoperative nasopharyngeal temperature and perioperative nasopharyngeal temperature change: (a) nasopharyngeal temperature after surgery and (b) change from before surgery to after surgery in the high-dose remifentanil group. Ordinary two-way analysis of variance (ANOVA) was used for statistical analyses. Tukey’s multiple comparison post hoc tests were performed for two-way ANOVA. The upper, middle and lower bars indicate maximum, median and minimum value each