Table 2. Multivariate Cox regression analysis of circIFI30 and survival in patients with TNBC (cohort 2).

Clinical variables	HR	95%CI	P
Age (≥50 vs. <50)	1.613	0.686-3.792	0.273
Grade (II vs. III)	0.539	0.229-1.265	0.155
T stage (T1 vs. T2/3)	1.887	0.633-5.627	0.255
N stage (N0 vs. N1-3)	1.789	0.553-5.783	0.331
TNM stage (I-II vs. III)	1.064	0.300-3.771	0.924
CircIFI30 (low vs. high)	3.621	1.371-9.563	0.009*

Abbreviations: HR hazard ratio, CI confidence interval. *, P<0.05.