Table 3. Multivariate analysis of the factors associated with the use of trastuzumab therapy.

Parameter	Odds ratio (95% CI)	P value
Age, y
>60	1.000
<35	3.095 (1.219–7.853)	0.017
35–60	1.109 (0.622–1.979)	0.726
Lymph node stage
N0	1.000
N1	1.064 (0.547–2.068)	0.855
N2	0.925 (0.478–1.788)	0.816
N3	0.870 (0.401–1.847)	0.718
Menstrual status
Premenopausal	1.000
Postmenopausal	0.818 (0.530–1.261)	0.363
Radiotherapy
No	1.000
Yes	2.700 (1.630–4.472)	<0.001
Medical insurance
No	1.000
Yes	3.909 (2.505–6.101)	<0.001