{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T13:08:58Z","timestamp":1789477738333,"version":"build-2803163510"},"reference-count":35,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2020,2,5]],"date-time":"2020-02-05T00:00:00Z","timestamp":1580860800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100000027","name":"National Institute on Alcohol Abuse and Alcoholism","doi-asserted-by":"publisher","award":["F32AA025263"],"award-info":[{"award-number":["F32AA025263"]}],"id":[{"id":"10.13039\/100000027","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000027","name":"National Institute on Alcohol Abuse and Alcoholism","doi-asserted-by":"publisher","award":["R01AA025037"],"award-info":[{"award-number":["R01AA025037"]}],"id":[{"id":"10.13039\/100000027","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Alcoholism Clin &amp;amp; Exp Res"],"published-print":{"date-parts":[[2020,3]]},"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Alcohol and marijuana are psychoactive substances commonly used by young adults and are independently associated with numerous acute and long\u2010term consequences. Many young adults engage in simultaneous alcohol and marijuana (SAM) use to cross\u2010fade (i.e., to enhance the effects of intoxication), although the extent to which alcohol use and alcohol\u2010related consequences increase on SAM occasions compared to alcohol\u2010only occasions is unclear. This study examines daily data among a sample of SAM users comparing SAM days to other days when young adults only used alcohol.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A sample of 409 young adults (age 18 to 25; <jats:italic>M<\/jats:italic><jats:sub>age<\/jats:sub>\u00a0=\u00a021.6, SD\u00a0=\u00a02.2; 50.9% women) who reported SAM use in the past month completed 2 bursts of 14\u00a0days of daily surveys (28\u00a0days in total) assessing alcohol use, alcohol\u2010related consequences, and SAM use.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Multilevel models based on alcohol\u2010only and SAM days (<jats:italic>n<\/jats:italic>\u00a0=\u00a03,016\u00a0days; 391 individuals) indicated young adults drank more alcohol on SAM days compared to alcohol\u2010only days (with no marijuana use). Similarly, days with SAM use were associated with more alcohol\u2010related positive and negative consequences. The daily association between SAM use and positive consequences was statistically significant, after accounting for the amount of alcohol consumed; in contrast, the association between SAM use and negative consequences was diminished and nonsignificant.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Among young adult SAM users, days with SAM use were associated with more alcohol use and positive consequences compared to days they only drank alcohol. Further examination of the motivational context for engaging in SAM use, as well as potential physiological interactions between alcohol and marijuana use on alcohol\u2019s effects, is warranted. Alcohol interventions might benefit from addressing increased alcohol use and alcohol\u2010related consequences as risks associated with SAM use.<\/jats:p><\/jats:sec>","DOI":"10.1111\/acer.14279","type":"journal-article","created":{"date-parts":[[2020,2,5]],"date-time":"2020-02-05T15:20:13Z","timestamp":1580916013000},"page":"689-696","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":94,"title":["A Daily Study Comparing Alcohol\u2010Related Positive and Negative Consequences for Days With Only Alcohol Use Versus Days With Simultaneous Alcohol and Marijuana Use in a Community Sample of Young Adults"],"prefix":"10.1111","volume":"44","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7899-8120","authenticated-orcid":false,"given":"Christine M.","family":"Lee","sequence":"first","affiliation":[{"name":"From the Department of Psychiatry and Behavioral Sciences (CML, CBF, JMC, DAA, AMF, MEL) University of Washington Seattle 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