Table 1. Correlation of STATs mRNA high expression with OS in different pathological grades of breast cancer.

STATs	Pathological grade	Cases	HR (95% CI)	P-value
STAT1	I	56	1.24 (0.5–3.12)	0.6423
	II	325	1.44 (0.93–2.21)	0.0972
	III	1024	0.55 (0.39–0.77)	0.00041
STAT2	I	378	1.91 (0.59–6.16)	0.2686
	II	1077	1.33 (0.85–2.08)	0.2146
	III	1090	0.93 (0.56–1.54)	0.7653
STAT3	I	378	1.91 (0.17–21.57)	0.5967
	II	1077	0.42 (0.13–1.41)	0.1491
	III	1090	0.45 (0.27–0.77)	0.0027
STAT4	I	378	0.58 (0.23–1.47)	0.2456
	II	1077	0.9 (0.59–1.39)	0.6489
	III	1090	0.66 (0.47–0.92)	0.00134
STAT5a	I	56	0.53 (0.21–1.38)	0.1886
	II	325	0.71 (0.46–1.1)	0.1229
	III	1024	0.72 (0.52–1)	0.05222
STAT5b	I	56	0.68 (0.26–1.78)	0.4355
	II	325	0.6 (0.38–0.93)	0.0219
	III	1024	0.92 (0.66–1.28)	0.6183
STAT6	I	56	0.74(0.29–1.9)	0.5278
	II	325	0.89 (0.58–1.37)	0.6017
	III	1024	0.92 (0.66–1.28)	0.6231