Table 2.

Structural breakpoints of ELN number based on ORs, Coefficients and HRs in different subgroups.

Subgroup	Node Stage Migration			Positive Lymph Node			Disease-Specific Survival
	Structural Breakpoint	F a	P b	Structural Breakpoint	F a	P b	Structural Breakpoint	F a	P b
Age
≤ 50	28	409	< 0.001	22	2123	< 0.001	18	9591	< 0.001
50 ~ 60	9	902	< 0.001	25	1706	< 0.001	11	1102	< 0.001
60 ~ 70	20	2801	< 0.001	21	1033	< 0.001	26	231	< 0.001
> 70	21	348	< 0.001	12	1683	< 0.001	20	104	< 0.001
T stage
T1a	26	1792	< 0.001	25	1113	< 0.001	18	2222	< 0.001
T1b	28	166	< 0.001	26	1882	< 0.001	29	76	< 0.001
T1c	17	3431	< 0.001	24	1592	< 0.001	8	145	< 0.001
Laterality
Left	27	693	< 0.001	26	476	< 0.001	12	222	< 0.001
Right	28	787	< 0.001	24	730	< 0.001	25	470	< 0.001
Bilateral	24	1904	< 0.001	24	1924	< 0.001	9	105	< 0.001
Primary Site
Ovary	25	78	< 0.001	25	931	< 0.001	13	1292	< 0.001
Fallopian tube	28	497	< 0.001	22	1064	< 0.001	21	47	< 0.001
Differentiation
Grade 1	27	1031	< 0.001	24	366	< 0.001	21	126	< 0.001
Grade 2	28	792	< 0.001	26	964	< 0.001	14	1056	< 0.001
Grade 3&4	17	906	< 0.001	26	890	< 0.001	13	1264	< 0.001
Histopathology
Serous	25	686	< 0.001	25	1952	< 0.001	9	124	< 0.001
Endometrioid	22	90	< 0.001	25	428	< 0.001	20	57	< 0.001
Mucinous	28	151	< 0.001	28	124	< 0.001	20	132	< 0.001
Clear cell	29	194	< 0.001	21	46	< 0.001	16	1329	< 0.001
Carcinosarcoma	16	1537	< 0.001	16	140	< 0.001	19	1955	< 0.001
Brenner & NOS	22	1093	< 0.001	23	1148	< 0.001	18	2512	< 0.001
Mix	29	240	< 0.001	24	1029	< 0.001	19	726	< 0.001

^a The F-test for the Chow Test at the given structural breakpoint.

^b The P value was for the Chow Test (F test) at the given structural breakpoint.

All p values less than 0.05 with statistical significance were use bold fronts.