Internet search patterns reveal firearm sales, policies, and deaths

This study explores the use of firearm-related internet search queries as a complementary data source for tracking firearm sales and ownership. The researchers validate search query volume against background check data, finding a high correlation. They also find a positive association between search volume and firearm-related mortality, and a negative association with the strength of state-level firearm control policies. The study proposes a framework for prospective surveillance using internet search data to inform public health policy debates.

John S. Brownstein, Adam D. Nahmod, Ben Y. Reis