Expanding the Opioids System Model to more comprehensively incorporate fentanyl, stimulants use, polysubstance use and associated outcomes.

In 2018, OPSA launched an effort to develop of a quantitative system-dynamic model of the opioid crisis to help FDA a) understanding the complexity of the interconnected mechanisms of the crisis, and b) assess potential impacts (intended and unintended) of possible policy actions to address the crisis. In Sept 2019, OPSA awarded a 1-year cooperative agreement (Harvard/Mass General; FDA's RFA-FD-19-026) to complete an initial version of the model ready for policy analysis, and in Aug 2020, OPSA awarded a 1-year cooperative ag...