Table 1. Correlation of STAT gene expression level with OS in different pathological grades in ovarian cancer patients.

STAT	Pathological grade	Cases	HR (95% CI)	P-value
STAT1	I	56	2.19 (0.84−5.76)	0.1
	II	315	1.32 (0.95−1.83)	0.1
	III	968	0.73 (0.61−0.87)	0.00039*
STAT2	I	41	1.91 (0.59−6.16)	0.27
	II	153	1.33 (0.83−2.14)	0.24
	III	344	1 (0.76−1.31)	0.98
STAT3	I	41	0.67 (0.22–2.02)	0.47
	II	153	1.03 (0.65–1.63)	0.89
	III	344	0.75 (0.57–0.99)	0.039*
STAT4	I	56	2.23 (0.85−5.89)	0.096
	II	315	0.76 (0.53−1.07)	0.12
	III	968	0.73 (0.62−0.87)	0.00044*
STAT5a	I	56	2.05 (0.67−6.25)	0.2
	II	315	0.79 (0.58−1.08)	0.14
	III	968	0.88 (0.74−1.04)	0.13
STAT5b	I	56	1.66 (0.59−4.7)	0.34
	II	315	0.81 (0.59−1.1)	0.17
	III	968	0.84 (0.69−1.03)	0.088
STAT6	I	56	6.39 (1.82−22.44)	0.00094*
	II	315	0.8 (0.57−1.13)	0.2
	III	968	0.74 (0.6−0.9)	0.003*

*P<0.05.