EBRO 2017

The Will Rogers Phenomenon

Old staging process

New staging process

Result

Stage N Alive 6/12 surv. Stage N Alive 6/12 surv.

6/12 surv.

I

42 32

76% I

24 22

92%

92%

II

1 1

100%

III

17 9

55%

II

25 17

68% II

18 13

72%

72%

III

8 5

63%

III

64 23

36% III

89 37

42%

42%

Total

131 72

55%

131 72

55%

55%

Feinstein A R et al (1985) N Engl J Med 312:1604-8

ESTRO: Evidence-based Radiation Oncology