Amphetamine+Methamphetamine:PrThr:Pt:XXX:Ord
amphetamine+methamphetamine:prthr:pt:xxx:ord
Amphetamine+Methamphetamine:Presence or Threshold:To identify measures at a point in time:Not specified:Ordinal
amphetamine+methamphetamine:presence or threshold:to identify measures at a point in time:not specified:ordinal