Take a look at the Disability Benefits Questionnaires (DBQs) that are listed in your C&P. They should be related, or very close, to the conditions that you were being seen for. For instance if you have degenerative joint pain, there is an Arthritis DBQ. Then I would look through the VASRD for the conditions mentioned on the DBQs. The percentages listed in the VASRD related directly to the information included in the DBQs, and could be used to ESTIMATE what your IPEB findings will be. This is not a guarantee, and I dont want you to get your hopes up, but its a good way to start getting an idea of what to expect. Check your C&P to make sure that it is accurate, I have seen many mistakes before.