:If I could go to Barrett as my physician, his Board certification would be relevant, but he has not practiced since 1993. If we have the Board rates from 1993, or the rates when he started practice, that would help contextualize the statement. As an example, I could say "MB1954 did not have a computer in 1968. Today, 90% of people have computers, and those who do not have them tend to be poor and uneducated." Do you see the logical fallacy? It suggests that because you didn't have a computer in the past, you are poor and uneducated.  

 :In order to make the statistic relevant, it needs to be explained with context from Board certification statistics at that time Barrett was practicing: 1967 and 1993. Otherwise it is just an irrelevant piece of information.