1544 / 1983
Individual patient data
Criteria:
•
Randomised trials of radiotherapy (RT) versus same surgery
but no RT
•
Started before 2000
•
Mastectomy and axillary dissection to at least level II
•
RT to include chest wall
Found:
•
3786 women in 14 trials (started 1964 to 1982)
•
43 000 years of follow-up to 2009 (median 9.0 years)
•
RT to axillary, internal mammary and supraclavicular nodes
EBCTCG, Lancet 2014