A Digital Cohort Approach for Social Media Monitoring: A Cohort Study of People Who Vape E-Cigarettes.

Introduction: The evidence hierarchy in public health emphasizes longitudinal studies, whereas social media monitoring relies on aggregate analyses. Authors propose integrating longitudinal analyses into social media monitoring by creating a digital cohort of individual account holders, as demonstrated by a case study analysis of people who vape.

Methods: All English language X posts mentioning vape or vaping were collected from January 1, 2017 through December 31, 2020.