Pathways to drug prevalence estimation: synthesizing three comments on triangulation

All three commentaries affirm the importance of improving the quality of information informing drug policy decisions, and the opportunities for doing so by synthesizing (‘triangulating’) multiple data sets. McKetin's story of discordant trends in Australian methamphetamine series is a great example of the type of paradox that motivated us to write the original paper [1, 2]. Hospitalization, treatment admissions, seizures and arrests all rose...