Patient characteristics
tumor
TUMOR
Overall, 1781 patients were included in the analysis on the prognostic effect of BMI (Flowchart of included patients. BMI = body mass index.Baseline characteristics of study participants according to body mass index class (No. [%])Percentages may exceed 100% because of rounding. ER = estrogen receptor; HER2 = human epidermal growth factor receptor 2; IQR = interquartile range; PR = progesterone receptor.Missing values: smoking history (n = 38), tumor status (n = 2), histologic grade (n = 54), and HER2 status (n = 135).