{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T00:43:14Z","timestamp":1787013794405,"version":"build-2736575974"},"reference-count":26,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2025,2,6]],"date-time":"2025-02-06T00:00:00Z","timestamp":1738800000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100000026","name":"National Institute on Drug Abuse","doi-asserted-by":"publisher","award":["1R01DA050486\u201301"],"award-info":[{"award-number":["1R01DA050486\u201301"]}],"id":[{"id":"10.13039\/100000026","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Addiction"],"published-print":{"date-parts":[[2025,7]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background and Aims<\/jats:title>\n                    <jats:p>Identifying those who use methamphetamine or are at high risk of using methamphetamine is essential so that early, appropriate intervention can be made. This study evaluated the use of the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST) for identifying methamphetamine use among people on methadone maintenance treatment (MMT) in Vietnam.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>From June 2021 to May 2023, all people on MMT at 15 methadone clinics in Hanoi and Ho Chi Minh City, Vietnam, were invited to participate in this study. Participants underwent a face\u2010to\u2010face interview to complete the 8\u2010item ASSIST. Participants also had a urine drug test (UDT) for methamphetamine use. Discriminant properties of the ASSIST were evaluated using UDT as the reference.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Among 6709 participants, 10.7% (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009717) tested positive for methamphetamine use via UDT. The ASSIST demonstrated robust discriminant abilities to identify those who used methamphetamine [area under the curve (AUC)\u2009=\u20090.872; 95% confidence interval\u00a0(CI)\u2009=\u20090.856\u20130.887]. At the commonly used cutoff of 4, the ASSIST had a sensitivity of 83.8% and a specificity of 82.0%. At this cutoff, 82.2% of the ASSIST results aligned with UDT outcomes (kappa coefficient =\u20090.41,\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&lt;\u20090.001) and the ASSIST identified a prevalence of 25.0%. At higher cutoffs, the sensitivity of the ASSIST decreased but both the specificity and the agreement with the UDT results increased.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The Alcohol, Smoking and Substance Involvement Screening Test (ASSIST) appears to be reliable and valid in identifying methamphetamine use among people on methadone treatment in Vietnam. Cutoff adjustments may help to reduce false positive rates.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/add.70010","type":"journal-article","created":{"date-parts":[[2025,2,6]],"date-time":"2025-02-06T03:28:46Z","timestamp":1738812526000},"page":"1450-1459","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Validation of the alcohol, smoking and substance involvement screening test (ASSIST) for identifying methamphetamine use among people on methadone maintenance treatment in Vietnam"],"prefix":"10.1111","volume":"120","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2512-8281","authenticated-orcid":false,"given":"Truc Thanh","family":"Thai","sequence":"first","affiliation":[{"name":"Faculty of Public Health University of Medicine and Pharmacy at Ho Chi Minh City  Ho Chi Minh City Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Diep Bich","family":"Nguyen","sequence":"additional","affiliation":[{"name":"Center for Training and Research on Substance Use &amp; HIV Hanoi Medical University  Ha Noi City Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Trang Thu","family":"Nguyen","sequence":"additional","affiliation":[{"name":"Center for Training and Research on Substance Use &amp; HIV Hanoi Medical University  Ha Noi City Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hai\u2010Van Thi","family":"Hoang","sequence":"additional","affiliation":[{"name":"Department of Global Health, Institute of Preventive Medicine and Public Health Hanoi Medical University  Ha Noi City Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2457-604X","authenticated-orcid":false,"given":"Michael","family":"Li","sequence":"additional","affiliation":[{"name":"Center for Behavioral and Addiction Medicine, Department of Family Medicine University of California  Los Angeles California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3402-142X","authenticated-orcid":false,"given":"Li","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Epidemiology, Fielding School of Public Health University of California  Los Angeles California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tuong\u2010Vi Thi","family":"Vu","sequence":"additional","affiliation":[{"name":"Vietnam HIV Addiction Technology Transfer Center University of Medicine and Pharmacy at Ho Chi Minh City  Ho Chi Minh City Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lan\u2010Phuong Thi","family":"Tran","sequence":"additional","affiliation":[{"name":"Vietnam HIV Addiction Technology Transfer Center University of Medicine and Pharmacy at Ho Chi Minh City  Ho Chi Minh City Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dung","family":"Van Do","sequence":"additional","affiliation":[{"name":"Faculty of Public Health University of Medicine and Pharmacy at Ho Chi Minh City  Ho Chi Minh City Vietnam"},{"name":"Vietnam HIV Addiction Technology Transfer Center University of Medicine and Pharmacy at Ho Chi Minh City  Ho Chi Minh City Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3583-0026","authenticated-orcid":false,"given":"Steve","family":"Shoptaw","sequence":"additional","affiliation":[{"name":"Center for Behavioral and Addiction Medicine, Department of Family Medicine University of California  Los Angeles California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giang Minh","family":"Le","sequence":"additional","affiliation":[{"name":"Center for Training and Research on Substance Use &amp; 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