Table I.

Correlation between positive KLF4 protein expression and clinical pathological parameters.

Clinical pathological parameter	Subcategories	Total samples	Positive KLF4 expression, n (%)	χ2 value	P-value
Age, years	≤51	133	58 (43.6)	2.944	0.086
	>51	106	35 (33.0)
Tumor size, cm	≤2	71	26 (36.6)	1.290	0.525
	2–5	109	45 (41.3)
	>5	59	22 (37.3)
Tumor type	Early invasive carcinoma	21	10 (47.6)	6.539	0.039
	Infiltrating ductal carcinoma	49	26 (53.1)
	Invasive carcinoma of no special type	169	57 (33.7)
Histological grade	I	32	16 (50.0)	7.210	0.026
	II	142	60 (42.3)
	III	65	17 (26.2)
Lymphatic metastasis	No	143	64 (44.8)	5.315	0.019
	Yes	96	29 (30.2)
Estrogen receptor	Negative	127	50 (39.4)	0.042	0.837
	Positive	112	43 (38.4)
Progesterone receptor	Negative	137	55 (40.1)	0.155	0.695
	Positive	102	38 (37.3)