Association between Postoperative Opioid Requirements and the Duration of Smoking Cessation in Male Smokers after Laparoscopic Distal Gastrectomy with Gastroduodenostomy

Figure 4

Comparison of numeric rating scale scores between the three groups according to postoperative day value <0.05 compared with G0. † value <0.05 compared with G2 PODs 0, 1, and 2 = postoperative days 0, 1, and 2, respectively. There was no significant difference between G0 and G2. The horizontal line inside the boxes shows the median values; the upper and lower edges of the box represent the third and first quartiles, respectively. The whiskers above and below the boxes represent 90% and 10%, respectively. Data were analyzed using the Kruskal–Wallis test.