Table 2. Survival analysis utilising various AURKA-CN cutoff values for the entire cohort.

Cutoff	Percentage of low AURKA-CN	HR	s.e.	Z	P>∣z∣	95% Confidence interval	Harrell's C index	Log-rank P-value
2.5	24	0.377	0.193	−1.9	0.057	0.138–1.030	0.59	0.05
2.6	31	0.280	0.138	−2.57	0.01	0.106–0.738	0.63	0.0064
2.813	36	0.401	0.180	−2.03	0.042	0.166–0.969	0.64	0.04
3	41	0.461	0.205	−1.74	0.081	0.193–1.101	0.62	0.07
3.5	44	0.447	0.199	−1.8	0.071	0.187–1.072	0.62	0.06
4	52	0.507	0.229	−1.5	0.133	0.210–1.228	0.61	0.13
5	64	0.633	0.307	−0.94	0.347	0.245–1.640	0.58	0.34

Abbreviation: AURKA-CN=Aurora kinase A gene copy number.