This cross-sectional study uses data from the National Vital Statistics System to compare forecasted numbers of drug overdose deaths in the US in the latter 43 weeks of 2020 with the observed number of overdose deaths in that period.

This cross-sectional study examines the rates of opioid prescribing and duration of those prescriptions in children, adolescents, and younger adults from 2006 to 2018.

This cohort study compares the rates and characteristics of deaths from drug overdose before vs during the COVID-19 pandemic in Rhode Island.

This ecological study estimates the extent to which the implementation of recreational cannabis laws is associated with traffic fatalities in Colorado and Washington State.

This cross-sectional study examines the associations of racial/ethnic segregation with county-level availability of methadone and buprenorphine in the US.

This study examines the number and dollar amount of payments to physicians from companies marketing prescription stimulant medications.

This study uses repeated cross-sectional survey data from the National Survey on Drug Use and Health (2008-2016) to investigate the association between recreational marijuana legalization and changes in marijuana use and cannabis use disorder in the United States.

This serial cross-sectional study examines whether US state Medicaid expansion is associated with county-level counts of opioid overdose deaths.

This longitudinal cohort study investigates whether prior convictions for driving under the influence are associated with the risk of subsequent arrests for a violent crime among handgun purchasers in California aged 21 to 49 years at the time of purchase in 2001.

This survey study examines changes in the use of marijuana by adolescents since legalization of recreational use in Washington State.

This population-based, cross-sectional study examines whether there is an association between direct-to-physician marketing of opioid products by pharmaceutical companies and mortality from prescription opioid overdoses across US counties.

This database analysis examines the extent to which pharmaceutical industry marketing of opioid products to physicians during 2014 was associated with opioid prescribing during 2015.

This analysis presents data on medical marijuana laws, cannabis use, and cannabis use disorders from 3 US national surveys conducted approximately 10 years apart.

This study examines the association between the legalization of recreational marijuana use in Washington and Colorado in 2012 and the subsequent perceived harmfulness and use of marijuana by adolescents.

This 38-year longitudinal study of a representative birth cohort (the Dunedin Multidisciplinary Health and Development Study of New Zealand) tests associations between cannabis use over 20 years and a variety of physical health indexes at early midlife.

Using the age at onset of posttraumatic stress disorder (PTSD) symptoms, Kubzansky et al investigate whether women who develop PTSD are more likely than trauma-exposed women without PTSD or those with no trauma or PTSD symptoms to gain weight.