Decriminalization and Marijuana Smoking Prevalence: Evidence From Australia
利用2001年澳大利亚全国毒品战略住户调查，采用参数和非参数方法评估大麻非刑事化政策对吸食大麻流行率的影响，发现非刑事化使吸食概率增加16.2%。
Abstract This article uses the 2001 National Drug Strategy Household Survey to assess the impact of marijuana decriminalization policy on marijuana smoking prevalence in Australia. Both parametric and nonparametric methods are used. The parametric approach includes endogenous probit switching, two-part, sample selection, and standard dummy variable models, while the nonparametric approach uses propensity score stratification matching. Specification analyses are also conducted. A nonparametric kernel-based test is constructed to select between parametric and nonparametric models, and the likelihood ratio test is used to choose among parametric models. Our analyses favor the endogenous switching model where decriminalization increases the probability of smoking by 16.2%. Keywords: : Average treatment effectBootstrappingEndogenous probit switchingIllicit drugsParametric and nonparametric specification analysisPropensity score matching