
On the basis of a 2015 review article in Biochimica et Biophysica Acta these 6 stages, the following stats are the percentage of people who are still living 5 years after their diagnosis:
stage 1: 60-80 percent
stage 2: 30-50 percent
operable stage 3a: 10-15 percent
inoperable stage 3a: 2-5 percent
stage 3b: 3-7 percent
stage 4: 1 percent