Table 2. Univariate analysis for 6 year LRR rate.

Conservative surgery
Variable	6 year LRR rate	P (log-rank test)
ER/HER2 status
ER-positive/HER2-negative	3	p.002
Triple Negative	6
HER2-positive	20
Grado
Grado I	4	p.020
Grado II	7
Grado III	11
CDIS
Yes	20	p.001
No	2
pCR (ypTis(ypN0)
Yes	2	p.030
No	20
Age, years
<40	14	p.001
>40	6
Mastectomy
Variable	6 year LRR rate	P (log-rank test)
ER/HER2 status
ER-positive/HER2-negative	2	p.001
Triple Negative	11
HER2-positive	17
CDIS
Yes	17	p.001
No	6
pCR (ypTis(ypN0)
Yes	2	p.030
No	16
Age, years
<40	16	p.001
>40	6
Lymphovascular Invasion
Yes	13	p.010
No	6