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Social sciences --- Statistical methods --- Mathematical statistics --- Programming

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Substance-Related Disorders --- Adolescent --- Adult

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Social sciences --- #PEDA *012.4 --- Statistical methods --- Quantitative methods in social research --- Statistical science --- Statistical methods.

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Over the past three decades a significant amount of economic research has established that increasing cigarette prices reduces cigarette smoking among both adults and adolescents. The consensus estimates for the price elasticity of adult demand from these studies fall in a narrow range of 0.3 to 0.5, suggesting that a 10% increase in the price of cigarettes would decrease adult consumption by 3%-5%. A smaller literature on youth responsiveness to cigarette prices has also emerged. A majority of these studies concluded that youth are up to three times as responsive to price as are adults. Only four econometric studies have attempted to model youth and young adult smoking initiation decisions. All four studies concluded that cigarette prices (or cigarette excise taxes) are insignificant determinants of smoking initiation. This study addresses the limitations of the previous studies on smoking initiation and examines the impact of cigarette prices and youth access laws on adolescent smoking initiation. Nationally representative longitudinal surveys of 8th and 10th graders as part of the Monitoring the Future project are employed in the analysis. State-specific prices and several measures of youth access restrictions are added to the survey data. Discrete-time hazard methods are used to model the probability of initiation. Contradicting the results of the four previous studies on smoking initiation, the results of this study clearly indicate that increases in the price of cigarettes would significantly reduce the number of adolescents who start smoking. The results are mixed with respect to youth access restrictions.

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Every major national tobacco legislation proposed in the past two years has called for significant increases in the price of cigarettes as a way to discourage youths from smoking. One argument used to oppose these bills is that increases in the price of cigarettes would cause youths to substitute marijuana for cigarettes. Although it has long been believed that cigarettes are a gateway drug,' no economic research has been done to determine whether cigarettes and marijuana are economic complements or substitutes. This paper begins to fill the void in the current research by examining the contemporaneous relationship between the demands for cigarettes and marijuana among a nationally representative sample of 8th, 10th and 12th graders from the 1992-1994 Monitoring the Future Project. Two part models are used to estimate reduced form demand equations. Examination of the cross-price effects clearly shows that higher cigarette prices will not increase marijuana use among youths. In addition to reducing youth smoking, we find that higher cigarette prices significantly reduce the average level of marijuana used by current users. Cigarette prices also have a negative effect on the probability of using marijuana findings are not significant at conventional levels.