Table 9. The relationship between pathological indicators and mortality.

Variables	Assignment	N	Mortality n (%)	χ2	P
PCR				0.183	1.000
	Yes	34	1 (2.9)
	No	422	19 (4.5)
Ki-67				7.889	0.005
	Low expression	819	5 (0.6)
	High expression	1644	35 (2.1)
	Missing data	134	5 (3.7)
ER				7.869	0.005
	Positive	1771	22 (1.2)
	Negative	826	23 (2.8)
PR				17.917	0.000
	Positive	1744	17 (1.0)
	Negative	853	28 (3.3)
Pathological molecular types				10.791	0.029
	Her-2 positive	476	13 (2.7)
	Luminal A	784	6 (0.8)
	Luminal B1	39	2 (5.1)
	Luminal B2	204	6 (2.9)
	Triple negative	560	11 (2.0)
pTMN Stage				46.669	0.000
	0 Stage	233	0 (0.0)
	I Stage	646	4 (0.6)
	II Stage	1223	15 (1.2)
	III/IV Stage	495	26 (5.3)