Cost burden following esophagectomy: A single centre observational study

Figure 2 Unadjusted cost. A: Unadjusted cost comparison by the severity of complications. A line indicates the median, and a dashed line indicates the 1^st and 3^rd quartiles. The height of each graph indicates the maximum cost range, and the width of each graph plots the kernel density estimate. Kruskal-Wallis rank sum test: Χ² = 37.843, df = 3, P < 0.001. Pairwise comparisons using the Wilcoxon rank sum test with continuity correction. ^aP < 0.05 vs no complication or CD I, ^bP < 0.05 vs CD II, ^cP < 0.05 vs CD III; B: Unadjusted cost comparison by the number of complications. A line indicates the median, and a dashed line indicates the 1^st and 3^rd quartiles. The height of each graph indicates the maximum cost range, and the width of each graph plots the kernel density estimate. Kruskal-Wallis rank sum test: Χ² = 47.606, df = 2, P < 0.001. Pairwise comparisons using the Wilcoxon rank sum test with continuity correction. ^aP < 0.05 vs 0-3 complications, ^bP < 0.05 vs 4-7 complications, ^cP < 0.05 vs higher number of complications more than 7; C: Unadjusted hospital costs between the patients with and without esophagectomy specific complications. A line indicates the median and dashed line indicates the 1^st and 3^rd quartiles. The height of each graph indicates maximum cost range, and the width of each graph plots the kernel density estimate. Wilcoxon rank sum test with continuity correction. W = 400, P < 0.001. ^aP < 0.05.