AMOUNT OF PREOPERATIVE ENDOMETRIAL TISSUE 45 2 Table S2. Median endometrial tissue surface (mm2) for concordant and discordant tumor grade and histological subtype, and low- and high-grade classification per included center. Centers Concordant tumor grade and histological subtype Discordant tumor grade and histological subtype P Concordant low- and high-grade EC Discordant low- and high-grade EC P 1 (n=102) 17.6 (2.4-130.2) 26.0 (0.7-114.8) 0.080 18.0 (0.7-130.2) 38.6 (2.8-114.8) 0.011* 2 (n=84) 65.6 (5.2-298.7) 71.8 (9.6-274.9) 0.733 65.5 (5.2-298.7) 94.2 (16.5-274.9) 0.150 3 (n=42) 18.4 (1.7-70.9) 22.4 (1.0-78.8) 0.356 20.0 (1.0-78.8) 24.6 (9.7-38.8) 0.664 4 (n=34) 32.7 (3.8-210.2) 11.0 (0.0-354.0) 0.071 14.7 (0.9-354.0) 10.1 (0.0-55.9) 0.295 5 (n=116) 4.0 (0.1-203.0) 12.5 (0.0-169.8) 0.702 3.3 (0.0-203.0) 31.8 (0.4-169.8) 0.016* 6 (n=17) 40.2 (0.7-85.1) 14.9 (5.4-30.9) 0.093 20.6 (0.7-85.1) 15.1 (7.9-22.3) 0.618 7 (n=82) 21.9 (0.1-251.5) 9.1 (0.0-98.2) 0.050 11.5 (0.0-251.5) 16.1 (1.5-65.0) 0.527 8 (n=63) 17.0 (0.2-278.7) 16.5 (0.1-115.3) 0.884 16.5 (0.0-278.7) 27.7 (2.8-45.7) 0.775 9 (n=33) 22.2 (3.7-66.0) 22.6 (0.6-125.2) 1.000 24.5 (0.6-125.2) 16.3 (3.3-38.7) 0.169 Data is presented in median (range) Abbreviation: EC, endometrial cancer
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