The best nomograms are only correct about
70% of the time. And their predictive value fades when looking at patients outside the medians. As JNF said, they are all based on retrospective reviews of different databases. Each database has different patient profiles, patients were treated differently, and there is no uniformity of measurement. You have discovered why prospective clinical trial data is so valuable.
Allen - not an MD
•PSA=7.3, prostate volume=55cc, 8/17 cores G6 5-35% involvement
•SBRT 9 yr onc. results
•SBRT 7 yr QOL results
•treated 10/2010 at age 57 at UCLA,PSA now: 0.2,no lasting urinary, rectal or sexual SEsmy PC blog