We have no idea if these are marijuana caused deaths because the information reported is incomplete.  Did those people who tested positive for marijuana also test positive for alcohol or pain killers?  We don't know the answer to that question because the writer chose not to include it.  if someone has both alcohol and marijuana in their system I know which of those substances I would blame for the accident.  Bogus use of statistics and partial information is not useful and as an editorial this missive fails totally to even explore the truth.