The medical examiner (S.L.S.) provided the 2 analysts (E.M.E. and J.S.S.) with information on all deaths from 2004 through 2010, in which a drug, legal or illegal, contributed to the death. The analysts separately reviewed and coded each death as involving prescription opiates (alone or in combination with other drugs) or other drugs. In doing so, the analysts discovered a number of the “other” deaths were due to anticoagulants, which were then coded separately. Deaths due to other drugs included prescribed drugs such as antidepressants or antihypertensives and illegal drugs (eg, cocaine). We did not make a distinction between suicide, natural, or accidental death.