Magnetic resonance imaging-based radiomics model for preoperative assessment of risk stratification in endometrial cancer

Table 2 Characteristics of endometrial cancer patients in the training and validation cohorts

Characteristics	Training cohort	Validation cohort	P value
Number	78	34
Age in yr	58.04 ± 11.54	59.06 ± 12.04	0.367
Histological grade1			0.465
G1/G2	58	23
G3	20	11
Risk classes			1.000
Low-risk	39	17
High-risk	39	17
Histological subtype1			0.018
Endometrioid	66	22
Serous	6	5
Clear cell	4	4
Carcinosarcoma	2	3
FIGO staging			0.765
I	50	21
II	11	7
III	9	4
IV	8	2
BMI
> 24	44	19	0.959
≤ 24	34	15
Hypertension			0.812
Positive	20	8
Negative	58	26
DM			0.605
Positive	15	8
Negative	63	26
Hyperlipidemia			0.338
Positive	5	4
Negative	73	30
Menstruation			0.395
Regular	48	18
Irregular	30	16
Menopausal status
Premenopausal	57	27	0.477
Postmenopausal	21	7
Fertility			0.669
Fertility	69	31
Nonfertility	9	3
CA125			0.617
< 35 U/mL	61	28
≥ 35 U/mL	17	6
CA19-9			0.631
< 27 U/mL	67	28
≥ 27 U/mL	11	6
Family history of cancer			0.292
Positive	10	7
Negative	68	27
Drinking history			0.915
Positive	5	2
Negative	73	32
Smoking history			0.606
Positive	4	1
Negative	74	33

¹Histological grade and subtype of endometrioid adenocarcinoma from surgical specimen.

Data are n or mean ± standard deviation. FIGO: The International Federation of Gynaecology and Obstetrics; BMI: Body mass index; CA125: Cancer antigen 125; CA19-9: Cancer antigen 19-9; DM: Diabetes mellitus.