Trends in E-Cigarette and Tobacco Cigarette Purchasing Behaviors by Youth in the United States, Canada, and England, 2017-2022

• Prif Awduron: Avery Roberson (Awdur), K. Michael Cummings (Awdur), Jessica L. Reid (Awdur), Robin Burkhalter (Awdur), Shannon Gravely (Awdur), Katherine East (Awdur), James F. Thrasher (Awdur), David Hammond (Awdur)
• Fformat: Llyfr
• Cyhoeddwyd: Frontiers Media S.A., 2023-11-01T00:00:00Z.
• Pynciau: article
• Mynediad Ar-lein: Connect to this object online.

Objectives: This paper describes trends in youth e-cigarette (EC) and tobacco cigarette (TC) purchasing behaviors in Canada, England, and the United States (US) in relationship to changing minimum legal age (MLA) laws.Methods: Data are from eight cross-sectional online surveys among national samples...