Table 2 Patients’ characteristics according to the presence of SEOC

Age at surgery, years, median (range)

50.6 (39–70)

56.5 (23–88)

0.0189^a*

BMI, median (range)

23.6 (17.2–34.9)

24.3 (14.8–55.7)

0.411^a

Parity (%)

  0

11 (52%)

154 (43%)

0.421^b

  ≥ 1

10 (48%)

201 (57%)

T stage (%)

  pT1

16 (76%)

284 (80%)

0.328^b

  pT2

4 (19%)

34 (9.6%)

  pT3

1 (4.7%)

37 (10.4%)

Histology of endometrial cancer (%)

EM G1 or G2

21 (100%)

280 (79%)

0.00019^b*

EM G3 or others

0 (0.0%)

75 (21%)

LVI (%)

2 (9.5%)

80 (23%)

0.126^b

BVI (%)

3 (14%)

84 (24%)

0.297^b

Myometrial invasion (%)

  < 1/2

18 (86%)

224 (63%)

0.016^b*

  ≥ 1/2

3 (14%)

131 (36%)

LNM-positive (%)

1 (4.7%)

48 (13%)

0.193^b

Presence of endometriosis (%)

12 (57%)

39 (11%)

 < 0.0001^b*