Effects of States' Methods for Estimating Nonfatal Overdose, United States, 2021.

Objective: Previous nonfatal overdose is a key risk factor for drug overdose death; however, current nonfatal overdose surveillance is limited to people who receive medical attention. We identified states that tracked nonfatal overdoses treated in prehospital and hospital care settings, assessed the effects of different surveillance methods on the magnitude of nonfatal overdose estimates, and estimated states' nonfatal-to-fatal overdose ratio.

Methods: Two analysts independently reviewed state websites to characterize states' methods of capturing nonfatal overdose events from December 2022 through February 2023.