Table 1.

Baseline characteristics of patients with cervical squamous cell carcinoma in the training cohort and validation cohort.

Variables	Training Cohort		Validation Cohort		Total		P
Age, n, %							0.482
≤38	3184	26.6	1585	26.5	4769	26.6
39-47	3137	26.2	1511	25.2	4648	25.9
48-58	2823	23.6	1440	24.0	4263	23.7
≥59	2830	23.6	1452	24.2	4282	23.83
Race, n, %							0.496
White	9000	75.2	4460	74.5	13460	74.9
Black	1692	14.1	854	14.3	2546	14.2
Other	1282	10.7	674	11.3	1956	10.9
Year of diagnosis, n, %							0.77
≤1996	1353	11.3	677	11.3	2030	11.3
1997-2004	3442	28.7	1691	28.2	5133	28.6
≥2005	7179	60.0	3620	60.5	10799	60.1
Histologic grade, n, %							0.448
Grade I	912	7.6	420	7.0	1332	7.4
Grade II	5383	45.0	2692	45.0	8075	45.0
Grade III	5460	45.6	2773	46.3	8233	45.8
Grade IV	219	1.8	103	1.7	322	1.8
Clinical stage, n, %							0.646
Stage I	5533	46.2	2714	45.3	8247	45.9
Stage II	1916	16.0	968	16.2	2884	16.1
Stage III	3201	26.7	1615	27.0	4816	26.8
Stage IV	1324	11.1	691	11.5	2015	11.2
Tumor size, n, %							0.306
≤28	4327	36.1	2129	35.6	6456	35.9
29-69	5691	47.5	2916	48.7	8607	47.9
≥70	1956	16.3	943	15.7	2899	16.1
Metastasis, n, %							0.562
M0	10878	90.8	5424	90.6	16302	90.8
M1	1096	9.2	564	9.4	1660	9.2
Radiotherapy, n, %							0.88
No/Unknown	4361	36.4	2174	36.3	6535	36.4
Yes	7613	63.6	3814	63.7	11427	63.6
Chemotherapy, n, %							0.358
No/Unknown	6178	51.6	3046	50.9	9224	51.4
Yes	5796	48.4	2942	49.1	8738	48.6
Historic stage, n, %							0.408
Localized	5332	44.5	2609	43.6	7941	44.2
Regional	5484	45.8	2775	46.3	8259	46.0
Distant	1158	9.7	604	10.1	1762	9.8