Table 4. Multivariate analysis of prognostic factors.

	IDC
Factor	HR	95% CI	P value
CD151	1.92	1.12–3.31	0.0172
(T1 vs T2-4)	1.98	0.94–4.15	0.0711
Nodal status	4.11	2.04–8.29	<0.0001
Stage (I vs II vs III)	0.68	0.38–1.23	0.2063
ER/PR	0.53	0.32–0.91	0.0198
HER2	1.20	0.71–2.04	0.1927

Abbreviations: CI=confidence interval; ER/PR=oestrogen receptor/progesterone receptor; HR=hazards ratio; IDC=invasive ductal carcinoma. The bold values are statistically significant.