We read with interest the study by Rao and colleagues on opioid policy effectiveness, which extends their previous modeling efforts to predict opioid-related overdose, life-years, and QALYs. This work presents a useful framework from which to investigate policy effectiveness.

When President Xi Jinping addressed the 19th National Congress of the Communist Party of China last month, he spoke of “the scientific truth of Marxism-Leninism”. Marxism (with Chinese characteristics), as President Xi went on to set out, is to be the foundation for a Healthy China.