little i-2 subtype:PrThr:Pt:RBC^Donor:Ord
little i-2 subtype:prthr:pt:rbc^donor:ord
i-2 subtype:Presence or Threshold:To identify measures at a point in time:Erythrocytes^Donor:Ordinal
i-2 subtype:presence or threshold:to identify measures at a point in time:erythrocytes^donor:ordinal