A comprehensive set of demand elasticity measures that simultaneously consider expenditure (eg, how tobacco budget constraints impact EC and cigarette use), own-price (eg, how EC taxes and prices impact EC use) and cross-price elasticities (eg, how cigarette taxes and prices impact EC use)is essential in evaluating the decision-making of tobacco purchases.15 16 Previous research has established that cigarette consumption is price sensitive and inelastic (increasing prices lead to less use and more tax revenues), as well as responding to expenditures (increasing income and expenditures lead to more consumption)

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The study's financial disclosure states that "Dr
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