Table 2. Association of clinical indicators with 3-year overall survival of triple-negative breast cancer (TNBC) patients.

Items	Number of cases (n)	Uni-variate analysis			Multi-variate analysis
		HR	95% CI	P value	HR	95% CI	P value
Age (years old)
≤50	37
>50	46	0.593	0.285-1.232	0.161	0.672	0.313-1.445	0.309
Diameter of lesion (cm)
≤5	62
> 5	21	2.574	1.228-5.393	0.012*	2.696	1.222-5.946	0.014*
Classification
IDC	70
Others	13	1.227	0.468-3.218	0.677	2.354	0.795-6.973	0.122
TNM grade
G1+G2	64
G3	19	1.813	0.825-3.982	0.139	1.105	0.468-2.614	0.819
Ki-67
≤14%	40
>14%	43	3.218	1.423-7.279	0.005*	3.095	1.281-7.477	0.012*
Relative level of hsa_circ_0000199
Low	40
High	43	3.783	1.614-8.868	0.002*	2.91	1.008-8.401	0.048*

HR: hazard ratio; CI: confidence interval; *: statistical significance.