Table 1. Correlation between expression of PGC-1α /ERRα and clinicopathologic features.

		PGC-1α				ERRα
	+	++	+++	P	+	++	+++	P
All case	41	66	14		45	64	10
Normal endometrium	18	22	0		29	9	0
Cancers	23	44	14		16	55	10
FIGO stage
I	17	25	9	0.793	13	31	7	0.407
II	1	9	3		1	11	1
III-IV	5	10	2		2	13	2
Grade
I	7	19	6	0.181	5	22	5	0.121
II	11	15	5		9	18	4
III	2	3	0		2	3	0
Histology
Endometrioid adenocarcinoma	18	36	11	0.928	15	41	9	0.127
Non- adenocarcinoma	5	8	3		1	14	1
Myometrial invasion
<1/2	19	30	7	0.038*	15	35	6	0.039*
≥1/2	4	14	7		1	20	4
Nodal metastasis
Negative	19	39	13	0.549	14	49	8	0.985
Positive	4	4	1		2	6	1

Data between different groups were compared using χ² tests. *mean P<0.05