147 / 1983
GITSG 7175 (1975-1980)
Treatment
n Local recurrence 5-year OS
Surgery alone
58
24%
36%
Post-op RT
50
27%
46%
Post-op chemo
48
20%
46%
Post-op chemo-RT 46
11%
56%
p
= 0.009
p
= 0.07
Gastrointestinal Tumor Study Group. N Engl J Med. 1985;312(23):1465-72