Table 4. Median survival time and 5-year overall survival of the four groups based on different hormone receptor status.

HR+					HR-
	MST	5-year OS	Pvalue*	P value#	MST	5-year OS	P value*	Pvalue#
R0 resection	66 m	54.1%	<0.001	0.011	18 m	26.7%	0.002	0.691
Primary resection	52 m	44.9%	<0.001		24 m	25.0%	<0.001
Metastases resection	38 m	31.7%	<0.001	<0.001	12 m	6.8%	0.526	<0.001
No resection	28 m	22.0%		<0.001	12 m	11.8%		<0.001

^*Compared with the no resection group;

^#compared with the primary resection group; ER, estrogen receptor; PR, progesterone receptor; HR+, ER+ or PR+; HR-, both ER- and PR-. OS, overall survival rate.