Table 1.

Comparison of count data between patients in the validation and training sets

Variable	Total	Training set (n=428)	Validation set (n=184)	Statistic	P
Age
<45	279	189	90	1.173	0.279
≥45	333	239	94
BMI
<24 kg/m2	208	151	57	1.062	0.303
≥24 kg/m2	404	277	127
Disease type
Squamous cell carcinoma	544	380	164	0.298	0.862
Adenocarcinoma	60	43	17
Others	8	5	3
Tumor size
<2 cm	302	203	99	2.199	0.333
2-4 cm	273	199	74
>4 cm	37	26	11
FIGO grading
IB1	273	181	92	3.480	0.323
IB2	217	157	60
IB3	37	26	11
IIA1	85	64	21
Differentiation degree
Well differentiated	238	160	78	1.484	0.476
Moderately differentiated	231	164	67
Poorly differentiated	143	104	39
Lymphovascular invasion
Without	130	89	41	0.170	0.680
With	482	339	143
History of hypertension
Without	102	72	30	0.025	0.875
With	510	356	154
History of diabetes
Without	71	51	20	0.137	0.711
With	541	377	164
LNM
Without	110	80	30	0.497	0.481
With	502	348	154

Note: BMI, body mass index; FIGO, International Federation of Gynecology and Obstetrics; LNM, lymph node metastasis.