It really depends on the school, and whether or not the admissions officers are also the interviewers. If you were interviewed by an ADCOM member, then he or she is either your advocate or your detractor in the committee meeting, depending on how s/he feels about you. You are presented by the officer(s), your file is reviewed, and then the ADCOM votes - yes, no, or waitlist. I'm not really sure how the process works when your interviewers are not present at the meeting.