Local Recurrence

Trials

N

Median Follow-Up (years)

No RT

RT

Risk Reduction

p

NSABP B17

813

17.25

35%

20%

47% - 52%

<0.001

EORTC 10853

1010

15.8

31%

18%

48%

<0.001

UK, Aust, NZ

475

12.7

26%

9%

69%

<0.0001

SweDCIS

1046

17

32%

20%

37.5%

<0.001