It must be said at the outset that there are many problems in connection with the rules of evidence which an article as short as this one cannot hope to touch upon. Among these is the relevance of intoxication to particular issues. It must be assumed that the evidence sought to be introduced is material and relevant. With this assumption we will consider three areas of intoxication evidence: lay opinion, expert opinion and hospital records. These are the three main areas involving the introduction of an opinion as to intoxicated condition.
John E. Martindale, Intoxication and Opinion Evidence, 11 Clev.-Marshall L. Rev. 59 (1962)