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Did Liberalising Bar Hours Decrease Traffic Accidents?
Colin Green, John Heywood & Maria Navarro
Journal of Health Economics, May 2014, Pages 189–198
Abstract:
Legal bar closing times in England and Wales have historically been early and uniform. Recent legislation liberalised closing times with the object of reducing social problems thought associated with drinking to “beat the clock.” Indeed, using both difference in difference and synthetic control approaches we show that one consequence of this liberalisation was a decrease in traffic accidents. This decrease is heavily concentrated among younger drivers. Moreover, we provide evidence that the effect was most pronounced in the hours of the week directly affected by the liberalisation; late nights and early mornings on weekends. This evidence survives a series of robustness checks and suggests at least one socially positive consequence of extending bar hours.
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Relative Deprivation and Risky Behaviors
Ana Balsa, Michael French & Tracy Regan
Journal of Human Resources, Spring 2014, Pages 446-471
Abstract:
Relative deprivation has been associated with lower social and job satisfaction as well as adverse health outcomes. Using Add Health data, we examine whether a student’s relative socioeconomic status (SES) has a direct effect on substance use. We advance the existing literature by addressing selection and simultaneity bias and by focusing on a reference group likely to exert the most influence on the respondents. We find that relative deprivation is positively associated with alcohol consumption, drinking to intoxication, and smoking for adolescent males, but not for females. Alternative variable definitions and robustness checks confirm these findings.
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The Impact of State Medical Marijuana Legislation on Adolescent Marijuana Use
Esther Choo et al.
Journal of Adolescent Health, forthcoming
Purpose: The state-level legalization of medical marijuana has raised concerns about increased accessibility and appeal of the drug to youth. The objective of this study was to assess the impact of medical marijuana legalization across the United States by comparing trends in adolescent marijuana use between states with and without legalization of medical marijuana.
Methods: The study utilized data from the Youth Risk Behavioral Surveillance Survey between 1991 and 2011. States with a medical marijuana law for which at least two cycles of Youth Risk Behavioral Surveillance data were available before and after the implementation of the law were selected for analysis. Each of these states was paired with a state in geographic proximity that had not implemented the law. Chi-squared analysis was used to compare characteristics between states with and without medical marijuana use policies. A difference-in-difference regression was performed to control for time-invariant factors relating to drug use in each state, isolating the policy effect, and then calculated the marginal probabilities of policy change on the binary dependent variable.
Results: The estimation sample was 11,703,100 students. Across years and states, past-month marijuana use was common (20.9%, 95% confidence interval 20.3–21.4). There were no statistically significant differences in marijuana use before and after policy change for any state pairing. In the regression analysis, we did not find an overall increased probability of marijuana use related to the policy change (marginal probability .007, 95% confidence interval −.007, .02).
Conclusions: This study did not find increases in adolescent marijuana use related to legalization of medical marijuana.
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Does Liberalizing Cannabis Laws Increase Cannabis Use?
Jenny Williams & Anne Line Bretteville-Jensen
Journal of Health Economics, July 2014, Pages 20–32
Abstract:
A key question in the ongoing policy debate over cannabis’ legal status is whether liberalizing cannabis laws leads to an increase in cannabis use. This paper provides new evidence on the impact of a specific type of liberalization, decriminalization, on initiation into cannabis use. Our identification strategy exploits variation in the timing of cannabis policy reforms and our estimation framework marries a difference-in-difference approach with a discrete time duration model. Our results reveal evidence of both heterogeneity and dynamics in the response of cannabis uptake to decriminalization. Overall, we find that the impact of decriminalization is concentrated amongst minors, who have a higher rate of uptake in the first five years following its introduction.
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Witnessing a Violent Death and Smoking, Alcohol Consumption, and Marijuana Use among Adolescents
Roman Pabayo, Beth Molnar & Ichiro Kawachi
Journal of Urban Health, April 2014, Pages 335-354
Abstract:
Witnessing violence has been linked to maladaptive coping behaviors such as smoking, alcohol consumption, and marijuana use. However, more research is required to identify mechanisms in which witnessing violence leads to these behaviors. The objectives of this investigation were to examine the association between witnessing a violent death and smoking, alcohol consumption, and marijuana use among adolescents, to identify whether exhibiting depressive symptoms was a mediator within this relationship, and to determine if those who had adult support in school were less likely to engage in risky health behaviors. Data were collected from a sample of 1,878 urban students, from 18 public high schools participating in the 2008 Boston Youth Survey. In 2012, we used multilevel log-binomial regression models and propensity score matching to estimate the association between witnessing a violent death and smoking, alcohol consumption, and marijuana use. Analyses indicated that girls who witnessed a violent death were more likely to use marijuana (relative risk (RR) = 1.09, 95 % confidence interval (CI) = 1.02, 1.17), and tended towards a higher likelihood to smoke (RR = 1.06, 95 % CI = 1.00, 1.13) and consume alcohol (RR = 1.07, 95 % CI = 0.97, 1.18). Among boys, those who witnessed a violent death were significantly more likely to smoke (RR = 1.20, 95 % CI = 1.11, 1.29), consume alcohol (RR = 1.30, 95 % CI = 1.17, 1.45) and use marijuana (RR = 1.33, 95 % CI = 1.21, 1.46). When exhibiting depressive symptoms was included, estimates were not attenuated. However, among girls who witnessed a violent death, having an adult at school for support was protective against alcohol consumption. When we used propensity score matching, findings were consistent with the main analyses among boys only. This study adds insight into how witnessing violence can lead to adoption of adverse health behaviors.
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The Effect of Medical Marijuana Laws on Crime: Evidence from State Panel Data, 1990-2006
Robert Morris et al.
PLoS ONE, March 2014
Background: Debate has surrounded the legalization of marijuana for medical purposes for decades. Some have argued medical marijuana legalization (MML) poses a threat to public health and safety, perhaps also affecting crime rates. In recent years, some U.S. states have legalized marijuana for medical purposes, reigniting political and public interest in the impact of marijuana legalization on a range of outcomes.
Methods: Relying on U.S. state panel data, we analyzed the association between state MML and state crime rates for all Part I offenses collected by the FBI.
Findings: Results did not indicate a crime exacerbating effect of MML on any of the Part I offenses. Alternatively, state MML may be correlated with a reduction in homicide and assault rates, net of other covariates.
Conclusions: These findings run counter to arguments suggesting the legalization of marijuana for medical purposes poses a danger to public health in terms of exposure to violent crime and property crimes.
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Social Drinking versus Administering Alcohol
Björn Frank, Justus Haucap & Annika Herr
Economic Inquiry, forthcoming
Abstract:
Alcohol consumption tends to make some people (unwillingly) tell the truth, hence social drinking can serve as a signal in social contact games. We provide empirical evidence which shows that social drinking can serve as a trust facilitating mechanism. Liver cirrhosis mortality and the rate of abstainers are used to construct a novel index of moderate alcohol consumption, which correlates with trust levels in a cross-country analysis.
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Positive peer pressure: Priming member prototypicality can decrease undergraduate drinking
Chris Goode, Rhonda Balzarini & Heather Smith
Journal of Applied Social Psychology, forthcoming
Abstract:
In two field experiments, we manipulated the extent to which sorority members viewed themselves as prototypical group members before they learned social norm information. In Study 1 (n = 109), participants who learned that they closely matched the ideal group member's personality intended to drink less alcohol after reading about related group norms. In Study 2 (n = 155), participants primed to think of themselves as ideal group members reported drinking less alcohol in comparison to participants primed to think of themselves as unique individuals. Participants who heard a descriptive norm presentation reported drinking less alcohol in comparison to participants who heard injunctive or combined norm presentations. If speakers prime group member prototypicality before delivering normative information, their message can be more effective.
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Shirley Fecteau et al.
Drug and Alcohol Dependence, forthcoming
Background: Most tobacco smokers who wish to quit fail to reach their goal. One important, insufficiently emphasized aspect of addiction relates to the decision-making system, often characterized by dysfunctional cognitive control and a powerful drive for reward. Recent proof-of-principle studies indicate that transcranial direct current stimulation (tDCS) over the dorsolateral prefrontal cortex (DLPFC) can transiently modulate processes involved in decision-making, and reduce substance intake and craving for various addictions. We previously proposed that this beneficial effect of stimulation for reducing addictive behaviors is in part mediated by more reflective decision-making. The goal of this study was to test whether nicotine intake and decision-making behaviors are modulated by tDCS over the DLPFC in tobacco smokers who wished to quit smoking
Methods: Subjects received two five-day tDCS regimens (active or sham). Stimulation was delivered over the right DLPFC at a 2 mA during 30 minutes. Nicotine cravings, cigarette consumption and decision-making were assessed before and after each session
Results: Main findings include a significant decrease in the number of cigarettes smoked when participants received active as compared to sham stimulation. This effect lasted up to four days after the end of the stimulation regimen. In regards to decision-making, smokers rejected more often offers of cigarettes, but not offers of money, after they received active as compared to sham stimulation at the Ultimatum Game. No significant change was observed at the Risk Task with cigarettes or money as rewards.
Conclusion: Overall, these findings suggest that tDCS over the DLPFC may be beneficial for smoking reduction and induce reward sensitive effects.
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Rising Opioid Prescribing in Adult U.S. Emergency Department Visits: 2001–2010
Maryann Mazer-Amirshahi et al.
Academic Emergency Medicine, March 2014, Pages 236–243
Objectives: The objective was to describe trends in opioid and nonopioid analgesia prescribing for adults in U.S. emergency departments (EDs) over the past decade.
Methods: Data from the National Hospital Ambulatory Medical Care Survey (NHAMCS) 2001 through 2010 were analyzed. ED visits for adult patients (≥18 years of age) during which an analgesic was prescribed were included. Trends in the use of six commonly prescribed opioids, stratified by Drug Enforcement Agency (DEA) schedule, as well as nonopioid analgesics were explored, along with the frequency of pain-related ED visits. For 2005 through 2010, data were further divided by whether the opioid was administered in the ED versus prescribed at discharge.
Results: Between 2001 and 2010, the percentage of overall ED visits (pain-related and non–pain-related) where any opioid analgesic was prescribed increased from 20.8% to 31.0%, an absolute increase of 10.2% (95% confidence interval [CI] = 7.0% to 13.4%) and a relative increase of 49.0%. Use of DEA schedule II analgesics increased from 7.6% in 2001 to 14.5% in 2010, an absolute increase of 6.9% (95% CI = 5.2% to 8.5%) and a relative increase of 90.8%. Use of schedule III through V agents increased from 12.6% in 2001 to 15.6% in 2010, an absolute increase of 3.0% (95% CI = 2.0% to 5.7%) and a relative increase of 23.8%. Prescribing of hydrocodone, hydromorphone, morphine, and oxycodone all increased significantly, while codeine and meperidine use declined. Prescribing of nonopioid analgesics was unchanged, 26.2% in 2001 and 27.3% in 2010 (95% CI = –1.0% to 3.4%). Hydromorphone and oxycodone had the greatest increase in ED administration between 2005 and 2010, while oxycodone and hydrocodone had the greatest increases in discharge prescriptions. There was no difference in discharge prescriptions for nonopioid analgesics. The percentage of visits for painful conditions during the period increased from 47.1% in 2001 to 51.1% in 2010, an absolute increase of 4.0% (95% CI = 2.3% to 5.8%).
Conclusions: There has been a dramatic increase in prescribing of opioid analgesics in U.S. EDs in the past decade, coupled with a modest increase in pain-related complaints. Prescribing of nonopioid analgesics did not significantly change.
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Neurocognition in college-aged daily marijuana users
Mary Becker, Paul Collins & Monica Luciana
Journal of Clinical and Experimental Neuropsychology, forthcoming
Background: Marijuana is the most commonly used illicit substance in the United States. Use, particularly when it occurs early, has been associated with cognitive impairments in executive functioning, learning, and memory.
Method: This study comprehensively measured cognitive ability as well as comorbid psychopathology and substance use history to determine the neurocognitive profile associated with young adult marijuana use. College-aged marijuana users who initiated use prior to age 17 (n = 35) were compared to demographically matched controls (n = 35).
Results: Marijuana users were high functioning, demonstrating comparable IQs to controls and relatively better processing speed. Marijuana users demonstrated relative cognitive impairments in verbal memory, spatial working memory, spatial planning, and motivated decision making. Comorbid use of alcohol, which was heavier in marijuana users, was unexpectedly found to be associated with better performance in some of these areas.
Conclusions: This study provides additional evidence of neurocognitive impairment in the context of adolescent and young adult marijuana use. Findings are discussed in relation to marijuana’s effects on intrinsic motivation and discrete aspects of cognition.
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Labor Market Impacts of Smoking Regulations on the Restaurant Industry
Tami Gurley-Calvez, George Hammond & Randall Childs
Contemporary Economic Policy, forthcoming
Abstract:
This paper examines the impact of smoking regulations on restaurant employment in West Virginia, a state with a high rate of smoking prevalence. Using a confidential establishment-level dataset, our results suggest that smoking bans reduced restaurant employment by between 0.7 and 1.5 workers, depending on model specification. We find that smoking restrictions have heterogeneous impacts across establishments, with the largest impacts on mid-sized establishments, defined as those with 10–29 employees. Our results also suggest that the impact of smoking restrictions was larger in counties with higher rates of smoking prevalence.
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Alcohol Availability and Crime: Lessons from Liberalized Weekend Sales Restrictions
Hans Grönqvist & Susan Niknami
Journal of Urban Economics, May 2014, Pages 77–84
Abstract:
We investigate a large-scale experimental scheme implemented in Sweden whereby the state in the year 2000 required all alcohol retail stores in selected areas to stay open on Saturdays. The purpose of the scheme was to evaluate possible social consequences of expanding access to alcohol during weekends. Using rich individual level data we show that this increase in alcohol availability raised both alcohol use and crime.
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Association Between Riding With an Impaired Driver and Driving While Impaired
Kaigang Li et al.
Pediatrics, April 2014, Pages 620-626
Objective: To examine the association between driving while alcohol/drug impaired (DWI) and the timing and amount of exposure to others’ alcohol/drug-impaired driving (riding while impaired [RWI]) and driving licensure timing among teenage drivers.
Methods: The data were from waves 1, 2, and 3 (W1, W2, and W3, respectively) of the NEXT Generation Study, with longitudinal assessment of a nationally representative sample of 10th graders starting in 2009–2010. Multivariate logistic regression was used for the analyses.
Results: Teenagers exposed to RWI at W1 (adjusted odds ratio [AOR] = 21.12, P < .001), W2 (AOR = 19.97, P < .001), and W3 (AOR = 30.52, P < .001) were substantially more likely to DWI compared with those reporting never RWI. Those who reported RWI at 1 wave (AOR = 10.89, P < .001), 2 waves (AOR = 34.34, P < .001), and all 3 waves (AOR = 127.43, P < .001) were more likely to DWI compared with those who never RWI. Teenagers who reported driving licensure at W1 were more likely to DWI compared with those who were licensed at W3 (AOR = 1.83, P < .05).
Conclusions: The experience of riding in a vehicle with an impaired driver increased the likelihood of future DWI among teenagers after licensure. There was a strong, positive dose-response association between RWI and DWI. Early licensure was an independent risk factor for DWI. The findings suggest that RWI and early licensure could be important prevention targets.
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Repeal of Prohibition: A Benefit-Cost Analysis
Donald Vitaliano
Contemporary Economic Policy, forthcoming
Abstract:
In spite of an estimated increase in annual alcohol-related motor vehicle costs of $2.767 billion (1947 dollars), the net social benefit of repeal of alcohol Prohibition amounts to $432 million per annum in 1934–1937, about 0.33% of gross domestic product. Total benefits of $3.25 billion consist primarily of increased consumer and producer surplus, tax revenues, and reduced criminal violence costs. A Monte Carlo simulation shows the probability of negative net benefits is 16%. The estimated price elasticity of demand for spirits, beer, and wine are –.60, −.56, and –.51 respectively, which is consistent with the modern literature.
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Individual and spousal unemployment as predictors of smoking and drinking behavior
Mariana Arcaya et al.
Social Science & Medicine, June 2014, Pages 89–95
Abstract:
The effects of unemployment on health behaviors, and substance use in particular, is still unclear despite substantial existing research. This study aimed to assess the effects of individual and spousal unemployment on smoking and alcohol consumption. The study was based on eight waves of geocoded Framingham Heart Study Offspring Cohort data (US) from 1971-2008 that contained social network information. We fit three series of models to assess whether lagged 1) unemployment, and 2) spousal unemployment predicted odds of being a current smoker or drinks consumed per week, adjusting for a range of socioeconomic and demographic covariates. Compared with employment, unemployment was associated with nearly twice the subsequent odds of smoking, and with increased cigarette consumption among male, but not female, smokers. In contrast, unemployment predicted a one drink reduction in weekly alcohol consumption, though effects varied according to intensity of consumption, and appeared stronger among women. While spousal unemployment had no effect on substance use behaviors among men, wives responded to husbands’ unemployment by reducing their alcohol consumption. We conclude that individual, and among women, spousal unemployment predicted changes in substance use behaviors, and that the direction of the change was substance-dependent. Complex interactions among employment status, sex, and intensity and type of consumption appear to be at play and should be investigated further.
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Melissa Petkovsek et al.
Social Science & Medicine, June 2014, Pages 17–24
Abstract:
An ever-growing body of research has begun to focus closely on the role of prenatal smoke exposure in the development of conduct problems in children. To this point, there appears to be a correlation between prenatal nicotine exposure and behavioral problems. We build on this prior research by examining the coalescence of prenatal smoke exposure and genetic risk factors in the prediction of behavior problems. Specifically, the current study analyzed data from a nationally representative sample of twin pairs collected during early childhood. Our findings suggested that an interaction existed between prenatal smoke exposure and genetic risk factors which corresponded to increased risk of behavior problems. These findings provide evidence of a gene-environment interaction, in that prenatal smoke exposure conditioned the influence of genetic risk factors in the prediction of aggressive behavior. Interestingly, the association between genetic risk and prenatal smoking was sex-specific, and only reached statistical significance in females. Given the nature of our findings, it may shed light on why heterogeneity exists concerning the relationship between prenatal smoke exposure and externalizing behavioral problems in children.
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Margaret Wardle, Matthew Kirkpatrick & Harriet de Wit
Social Cognitive and Affective Neuroscience, forthcoming
Abstract:
3,4-Methylenedioxymethamphetamine (MDMA, ‘ecstasy’) is used recreationally to improve mood and sociability, and has generated clinical interest as a possible adjunct to psychotherapy. One way that MDMA may produce positive ‘prosocial’ effects is by changing responses to emotional stimuli, especially stimuli with social content. Here, we examined for the first time how MDMA affects subjective responses to positive, negative and neutral emotional pictures with and without social content. We hypothesized that MDMA would dose-dependently increase reactivity to positive emotional stimuli and dampen reactivity to negative stimuli, and that these effects would be most pronounced for pictures with people in them. The data were obtained from two studies using similar designs with healthy occasional MDMA users (total N = 101). During each session, participants received MDMA (0, 0.75 and 1.5 mg/kg oral), and then rated their positive and negative responses to standardized positive, negative and neutral pictures with and without social content. MDMA increased positive ratings of positive social pictures, but reduced positive ratings of non-social positive pictures. We speculate this ‘socially selective’ effect contributes to the prosocial effects of MDMA by increasing the comparative value of social contact and closeness with others. This effect may also contribute to its attractiveness to recreational users.
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Cross-Border Health and Productivity Effects of Alcohol Policies
Per Johansson, Tuomas Pekkarinen & Jouko Verho
Journal of Health Economics, forthcoming
Abstract:
This paper studies the cross-border health and productivity effects of alcohol taxes. We estimate the effect of a large cut in the Finnish alcohol tax on mortality, alcohol-related illnesses and work absenteeism in Sweden. This tax cut led to large differences in the prices of alcoholic beverages between these two countries and to a considerable increase in cross-border shopping. The effect is identified using differences-in-differences strategy where changes in these outcomes in regions near the Finnish border are compared to changes in other parts of northern Sweden. We use register data where micro level data on deaths, hospitalisations and absenteeism is merged to population-wide micro data on demographics and labour market outcomes. Our results show that the Finnish tax cut did not have any clear effect on mortality or alcohol-related hospitalisations in Sweden. However, we find that workplace absenteeism increased by 9% for males and by 15% for females near the Finnish border as a result of the tax cut.
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Vaccine for Cocaine Dependence: A Randomized Double-Blind Placebo-Controlled Efficacy Trial
Thomas Kosten et al.
Drug and Alcohol Dependence, forthcoming
Aims: We evaluated the immunogenicity, efficacy, and safety of succinylnorcocaine conjugated to cholera toxin B protein as a vaccine for cocaine dependence.
Methods: This 6-site, 24 week Phase III randomized double-blind placebo-controlled trial assessed efficacy during weeks 8 to 16. We measured urine cocaine metabolites thrice weekly as the main outcome
Results: The 300 subjects (76% male, 72% African-American, mean age 46 years) had smoked cocaine on average for 13 days monthly at baseline. We hypothesized that retention might be better and positive urines lower for subjects with anti-cocaine IgG levels of ≥ 42 μg/mL (high IgG), which was attained by 67% of the 130 vaccine subjects receiving five vaccinations. Almost 3-times fewer high than low IgG subjects dropped out (7% vs 20%). Although for the full 16 weeks cocaine positive urine rates showed no significant difference between the three groups (placebo, high, low IgG), after week 8, more vaccinated than placebo subjects attained abstinence for at least two weeks of the trial (24% vs 18%), and the high IgG group had the most cocaine-free urines for the last 2 weeks of treatment (OR = 3.02), but neither were significant. Injection site reactions of induration and tenderness differed between placebo and active vaccine, and the 29 serious adverse events did not lead to treatment related withdrawals, or deaths
Conclusions: The vaccine was safe, but it only partially replicated the efficacy found in the previous study based on retention and attaining abstinence.
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Mary Waldron et al.
Journal of Studies on Alcohol and Drugs, March 2014, Pages 235-240
Objective: We examined associations between reproductive onset and history of alcohol dependence (AD) in 475 African ancestry (AA) and 2,865 European or other ancestry (EA) female twins.
Method: Participants were drawn from a U.S. midwestern birth cohort study of like-sex female twin pairs born between 1975 and 1985, ages 21–32 as of last completed assessment. Cox proportional hazards regression models were estimated predicting age at first childbirth from history of AD, separately by race/ethnicity, without and with adjustment for sociodemographic characteristics, body mass index, history of other substance involvement, psychopathology, and family and childhood risks.
Results: Among EA twins, AD predicted early childbearing through age 17 and delayed childbearing from age 25 onward; in adjusted models, AD was associated with overall delayed childbearing. Among AA twins, reproductive timing and AD were not significantly related in either unadjusted or adjusted models.
Conclusions: Findings for twins of European ancestry are consistent with well-documented links between early alcohol mis/use and teenage parenting as well as delays in childbearing associated with drinking-related reproductive and relationship difficulties. Extension of analyses to other racial/ethnic groups of sufficient sample size remains important.
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Barış Yörük
Journal of Health Economics, July 2014, Pages 33–46
Abstract:
Underage drinkers often use false identification to purchase alcohol or gain access into bars. In recent years, several states have introduced laws that provide incentives to retailers and bar owners who use electronic scanners to ensure that the customer is 21 years or older and uses a valid identification to purchase alcohol. This paper is the first to investigate the effects of these laws using confidential data from the National Longitudinal Survey of Youth, 1997 Cohort (NLSY97). Using a difference-in-differences methodology, I find that the false ID laws with scanner provision significantly reduce underage drinking, including up to a 0.22 drink decrease in the average number of drinks consumed by underage youth per day. This effect is observed particularly in the short-run and more pronounced for non-college students and those who are relatively younger. These results are also robust under alternative model specifications. The findings of this paper highlight the importance of false ID laws in reducing alcohol consumption among underage youth.