LAUSR

Key Points Question Can diverse secondary data sources accurately estimate US firearm homicides in near real time? Findings This national prognostic study combines data from 5 online, health service, and hotline data sources into an ensemble model that accurately (99.74%) forecasted firearm homicide deaths in near real time within 38 deaths for the year. Meaning The findings of this study suggest that this model for forecasting firearm homicides provides a viable process to facilitate timely prevention efforts and expand firearm violence research using secondary data sources.