Comprehensive understanding of a rare disease: Cardiac metastatic tumor, a double-center 10-year case review

Table 3 Cox proportional hazards model of cardiac metastasis tumor

Variable	Hazard ratio	Standard error	z	P > |z|	95% confidence interval
Metastasis	2.046	0.775	1.89	0.059	0.975	4.297
Age	1.034	0.012	2.89	0.004	1.011	1.057
BNP (pg/mL)	1	0	2.3	0.022	1	1.001
Troponin (ug/L)	1.011	0.004	2.98	0.003	1.004	1.018

BNP: Brain natriuretic peptide.