Thomas Clausen

Image of Thomas Clausen
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Phone +47-23368978
Username
Visiting address Kirkeveien 166 Bygg 45 0450 OSLO
Postal address Postboks 1039 Blindern 0315 OSLO

Academic interests

  • Treatment approaches and treatment effects in the addictions
  • Opioid maintenance treatment (OMT) as treatment for opioid addiction
  • Overdoses; causes, mechanisms and effective interventions
  • Evaluations of new interventions, with a focus on importance of “local evidence”
  • Alcohol consumption patterns and mental health in low- and middle income countries
  • Development of research methods in the drug addiction field
  • Multidisciplinary research and complimentary methods
  • Research leadership

Teaching

  • Epidemiology and terminology in the addictions
  • Research methodology and dissemination of research results
  • The treatment of drug addiction
  • Opioid maintenance treatment
  • Drug use and pregnancy
  • Overdoses and prevention
  • Treatment results and long-term outcomes
  • Compulsory treatment
  • Quality of life in the addictions

Background

Professor Thomas Clausen has his MD from the University of Oslo (2000), and earned his PhD (Dr.med.) also at the University of Oslo (2005). He has worked within the addiction field with academic duties and research as a fulltime University of Oslo employee since 2006, and as a Professor since 2010. He is the head of the research group at SERAF focusing on opioid addiction, overdoses and opioid maintenance treatment (OMT). Since 2016 he has been the Head of the Norwegian Addiction Research centre. During the academic year 2014-15 he was a Fulbright Scholar at the Alcohol Research Group (ARG) in Emeryville California, USA. Leads multiple research projects and engages in many national and international collaborations and networks.

 

https://www.researchgate.net/profile/Thomas_Clausen2

 

Appointments

Professor Clausen serves as the national expert for “drug-related-deaths”  DRD-indicator in the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA) with annual representation in expert meetings in Lisbon, Portugal.

Collaborations

  • Collaboration with the World Health Organization (WHO) including projects on alcohol consumption patterns in low-and middle income countries
  • Collaboration with Europe and American partners (EUROPAD/RADARS) in a joint project monitoring drug consumption patterns among persons entering opioid drug treatment
  • Collaboration with Nordic colleagues studying overdoses, and outcomes of opioid maintenance treatment in the Nordic countries and context.
  • Ongoing collaboration with the Sørlandet Sykehus, Kristiansand, Norway for outcomes studies from drug-treatment, including coercive treatment, 12-step utilization and Opioid maintenance treatment
  • Collaboration with all regional health enterprises in Norway for ongoing annual monitoring of outcomes of opioid maintenance treatment
  • Collaboration with the Directorate for Health, Oslo and Bergen Municipalities as a joint effort to distribute nasal naloxone to drug users will be monitored by SERAF
  • Collaboration with the ARG in California on alcohol use and consequenses with a focus on low-and middle income countries

PhD-Supervision

Ongoing PhD projects:

Marianne Riksheim; Longitudinal analyses of opioid maintenance treatment outcomes

Kristine Jonassen; (Medical student-researcher) Overdoses in Oslo

Adrian Razvan Pasareanu; Coercive treatment in the addictions and long-term outcomes

Ingeborg Skjærvø; Crime and drug treatment: the NorCOMT-project

Desiree Madah-Amiri; Distribution of nasal naloxone to opioid drug users

Ashley Muller; Quality of life, social networks and drug treatment: the NorCOMT-project

Anne Bech; Mortality during Opioid Maintenance Treatment (OMT) in Norway

Completed PhD-projects

Christian Tjagvad (2016); Addictive medication in relation to drug treatment and overdose death

Ingrid A. Havnes (2015); Violence and diversion of prescribed opioids among individuals in opioid maintenance treatment. A complementary methods study of violent crime convictions in a national cohort and qualitative interviews among prisoners

Priscilla Martinez (2013); Alcohol use in special populations in Africa: Data from the World Health Survey and Study on Global AGEing and adult health

Anne Opsal (2013); Involuntarily admitted patients with substance use disorders

Anne Bukten (2012); Criminal convictions among patients in opioid maintenance treatment in Norway. A national cohort study

John-Kåre Vederhus (2012); Addiction professionals’ and substance abuse patients’ attitudes towards and usage of 12-step-based self-help groups

Linn Gjersing (2011); Staff attitudes towards opioid maintenance treatment (OMT) and the associations with treatment

Tags: Nordic, USA

Publications

  • Bukten, Anne; Stavseth, Marianne Riksheim; Skurtveit, Svetlana; Tverdal, Aage; Strang, John & Clausen, Thomas (2017). High risk of overdose death following release from prison: variations in mortality during a 15-year observation period. Addiction.  ISSN 0965-2140.  112(8), s 1432- 1439 . doi: 10.1111/add.13803
  • Edvardsen, Hilde Marie Erøy; Tverborgvik, Torill; Frost, Joachim; Rogde, Sidsel; Morild, Inge; Waal, Helge; Clausen, Thomas; Slørdal, Lars & Vindenes, Vigdis (2017). Differences in combinations and concentrations of drugs of abuse in fatal intoxication and driving under the influence cases. Forensic Science International.  ISSN 0379-0738.  281, s 127- 133 . doi: 10.1016/j.forsciint.2017.10.045
  • Gjersing, Linn Renathe; Vinge-Holmquist, Kristine; Skurtveit, Svetlana; Bramness, Jørgen Gustav & Clausen, Thomas (2017). Emergency service use is common in the year before death among drug users who die from an overdose. Journal of Substance Use.  ISSN 1465-9891.  22(3), s 331- 336 . doi: 10.1080/14659891.2016.1208778 Full text in Research Archive.
  • Madah-Amiri, Desiree; Clausen, Thomas & Lobmaier, Philipp Paul (2017). Rapid widespread distribution of intranasal naloxone for overdose prevention. Drug And Alcohol Dependence.  ISSN 0376-8716.  173, s 17- 23 . doi: 10.1016/j.drugalcdep.2016.12.013 Full text in Research Archive.
  • Madah-Amiri, Desiree; Clausen, Thomas; Myrmel, Lars; Brattebø, Guttorm & Lobmaier, Philipp Paul (2017). Circumstances surrounding non-fatal opioid overdoses attended by ambulance services. Drug and Alcohol Review.  ISSN 0959-5236.  36(3), s 288- 294 . doi: 10.1111/dar.12451 Full text in Research Archive.
  • Muller, Ashley Elizabeth; Skurtveit, Svetlana & Clausen, Thomas (2017). Building abstinent networks is an important resource in improving quality of life. Drug And Alcohol Dependence.  ISSN 0376-8716.  180, s 431- 438 . doi: 10.1016/j.drugalcdep.2017.09.006 Full text in Research Archive.
  • Pasareanu, Adrian Razvan; Vederhus, John-Kåre; Opsal, Anne; Kristensen, Øistein & Clausen, Thomas (2017). Mental distress following inpatient substance use treatment, modified by substance use; comparing voluntary and compulsory admissions. BMC Health Services Research.  ISSN 1472-6963.  17:5, s 1- 9 . doi: 10.1186/s12913-016-1936-y
  • Skjærvø, Ingeborg; Clausen, Thomas; Skurtveit, Svetlana; Abel, Kristine Fiksdal & Bukten, Anne (2017). Similarities and differences in victimization risk factors for nonoffending and offending substance users. Victims & Offenders.  ISSN 1556-4991. . doi: 10.1080/15564886.2017.1383332
  • Skjærvø, Ingeborg; Skurtveit, Svetlana; Clausen, Thomas & Bukten, Anne (2017). Substance use pattern, self‐control and social network are associated with crime in a substance‐using population. Drug and Alcohol Review.  ISSN 0959-5236.  36(2), s 245- 252 . doi: 10.1111/dar.12406
  • Stallvik, Marianne & Clausen, Thomas (2017). HRQoL and its association to clinical severity and treatment needs. Journal of Substance Use.  ISSN 1465-9891.  22(5), s 524- 530 . doi: 10.1080/14659891.2016.1259366
  • Stavseth, Marianne Riksheim; Røislien, Jo; Bukten, Anne & Clausen, Thomas (2017). Factors associated with ongoing criminal engagement while in opioid maintenance treatment. Journal of Substance Abuse Treatment.  ISSN 0740-5472.  77, s 52- 56 . doi: 10.1016/j.jsat.2017.03.010
  • Clausen, Thomas; Martinez, Priscilla; Towers, Andy; Greenfield, Thomas & Kowal, Paul (2016). Alcohol Consumption at Any Level Increases Risk of Injury Caused by Others: Data from the Study on Global AGEing and Adult Health. Substance Abuse: Research and Treatment.  ISSN 1178-2218.  s 125- 32 . doi: 10.4137/SART.S23549 Full text in Research Archive.
  • Dunsæd, Frode; Kristensen, Øistein; Vederhus, John-Kåre; Clausen, Thomas & Høie, Magnhild (2016). Standardisert avrusning ved blandingsmisbruk. Tidsskrift for Den norske legeforening.  ISSN 0029-2001.  136(19), s 1639- 1642 . doi: 10.4045/tidsskr.16.0308
  • Madah-Amiri, Desiree; Clausen, Thomas & Lobmaier, Philipp Paul (2016). Utilizing a train-the-trainer model for multi-site naloxone distribution programs. Drug And Alcohol Dependence.  ISSN 0376-8716.  163, s 153- 156 . doi: 10.1016/j.drugalcdep.2016.04.007 Full text in Research Archive.
  • Muller, Ashley; Skurtveit, Svetlana & Clausen, Thomas (2016). Many correlates of poor quality of life among substance users entering treatment are not addiction-specific. Health and Quality of Life Outcomes.  ISSN 1477-7525.  14 . doi: 10.1186/s12955-016-0439-1 Full text in Research Archive.
  • Muller, Ashley; Skurtveit, Svetlana & Clausen, Thomas (2016). Validating the generic quality of life tool "QOL10" in a substance use disorder treatment cohort exposes a unique social construct. BMC Medical Research Methodology.  ISSN 1471-2288.  16 . doi: 10.1186/s12874-016-0163-x
  • Opsal, Anne; Kristensen, Øistein; Vederhus, John-Kåre & Clausen, Thomas (2016). Perceived coercion to enter treatment among involuntarily and voluntarily admitted patients with substance use disorders. BMC Health Services Research.  ISSN 1472-6963.  16(1), s 1- 10 . doi: 10.1186/s12913-016-1906-4 Full text in Research Archive.
  • Pasareanu, Adrian Razvan; Vederhus, John-Kåre; Opsal, Anne; Kristensen, Øistein & Clausen, Thomas (2016). Improved drug-use patterns at 6 months post-discharge from inpatient substance use disorder treatment: Results from compulsorily and voluntarily admitted patients. BMC Health Services Research.  ISSN 1472-6963.  16:291 . doi: 10.1186/s12913-016-1548-6 Full text in Research Archive.
  • Tjagvad, Christian; Clausen, Thomas; Handal, Marte & Skurtveit, Svetlana (2016). Benzodiazepine prescription for patients in treatment for drug use disorders: A nationwide cohort study in Denmark, 2000-2010. BMC Psychiatry.  ISSN 1471-244X.  16(1) . doi: 10.1186/s12888-016-0881-y Full text in Research Archive.
  • Tjagvad, Christian; Skurtveit, Svetlana; Bramness, Jørgen Gustav; Gjersing, Linn Renathe; Gossop, Michael & Clausen, Thomas (2016). Misuse of prescription drugs and overdose deaths. Journal of Substance Use.  ISSN 1465-9891.  21(5), s 515- 520 . doi: 10.3109/14659891.2015.1077280
  • Tjagvad, Christian; Skurtveit, Svetlana; Linnet, Kristian; Andersen, Ljubica Vukelic; Christoffersen, Dorte J. & Clausen, Thomas (2016). Methadone-related overdose deaths in a liberal opioid maintenance treatment program. European Addiction Research.  ISSN 1022-6877.  22(5), s 249- 258 . doi: 10.1159/000446429
  • Vederhus, John-Kåre; Birkeland, Bente & Clausen, Thomas (2016). Perceived quality of life, 6 months after detoxification: Is abstinence a modifying factor?. Quality of Life Research.  ISSN 0962-9343.  25(9), s 2315- 2322 . doi: 10.1007/s11136-016-1272-z
  • Vederhus, John-Kåre; Clausen, Thomas & Humphreys, Keith (2016). Assessing understandings of substance use disorders among Norwegian treatment professionals, patients and the general public. BMC Health Services Research.  ISSN 1472-6963.  16(1) . doi: 10.1186/s12913-016-1306-9
  • Vederhus, John-Kåre; Pripp, Are Hugo & Clausen, Thomas (2016). Quality of Life in Patients with Substance Use Disorders Admitted to Detoxification Compared with Those Admitted to Hospitals for Medical Disorders: Follow-Up Results. Substance Abuse: Research and Treatment.  ISSN 1178-2218.  10, s 31- 37 . doi: 10.4137/SART.S39192
  • Bukten, Anne; Lund, Ingunn Olea; Rognli, Eline Borger; Riksheim, Marianne; Lobmaier, Philipp Paul; Skurtveit, Svetlana; Clausen, Thomas & Kunøe, Nikolaj (2015). The Norwegian offender mental health and addiction study – Design and implementation of a national survey and prospective cohort study. Substance Abuse: Research and Treatment.  ISSN 1178-2218.  9, s 59- 66 . doi: 10.4137/SART.S23546 Full text in Research Archive.
  • Muller, Ashley & Clausen, Thomas (2015). Group exercise to improve quality of life among substance use disorder patients. Scandinavian Journal of Public Health.  ISSN 1403-4948.  43(2), s 146- 152 . doi: 10.1177/1403494814561819 Full text in Research Archive. Show summary
  • Pasareanu, Adrian Razvan; Opsal, Anne; Vederhus, John-Kåre; Kristensen, Øistein & Clausen, Thomas (2015). Quality of life improved following in-patient substance use disorder treatment. Health and Quality of Life Outcomes.  ISSN 1477-7525.  13 . doi: 10.1186/s12955-015-0231-7
  • Thylstrup, Birgitte; Clausen, Thomas & Hesse, Morten (2015). Cardiovascular disease among people with drug use disorders. International Journal of Public Health.  ISSN 1661-8556.  60(6), s 659- 668 . doi: 10.1007/s00038-015-0698-3
  • Vederhus, John-Kåre; Rysstad, Ole; Gallefoss, Frode; Clausen, Thomas & Kristensen, Øistein (2015). Kartlegging av alkoholbruk og røyking hos pasienter innlagt i medisinsk avdeling. Tidsskrift for Den norske legeforening.  ISSN 0029-2001.  135(14), s 1251- 1255 . doi: 10.4045/tidsskr.14.0848
  • Vederhus, John-Kåre; Zemore, Sarah E.; Rise, Jostein; Clausen, Thomas & Høie, Magnhild (2015). Predicting patient post-detoxification engagement in 12-step groups with an extended version of the theory of planned behavior. Addiction science & clinical practice.  ISSN 1940-0632.  10 . doi: 10.1186/s13722-015-0036-3
  • Bukten, Anne; Skurtveit, Svetlana; Waal, Helge & Clausen, Thomas (2014). Factors associated with dropout among patients in opioid maintenance treatment (OMT) and predictors of re-entry. A national registry-based study. Addictive Behaviours.  ISSN 0306-4603.  39(10), s 1504- 1509 . doi: 10.1016/j.addbeh.2014.05.007
  • Clausen, Thomas (2014). Hvor godt virker LAR, og hva er utfordringene?. Norsk Farmaceutisk Tidsskrift.  ISSN 0029-1935.  122(10), s 39- 42
  • Clausen, Thomas; Åsland, Reidun & Kristensen, Øistein (2014). Pasienter som avbryter LAR-behandling - hvordan går det med dem?. Tidsskrift for Den norske legeforening.  ISSN 0029-2001.  134(11), s 1146- 1149 . doi: 10.4045/tidsskr.13.0821
  • Havnes, Ingrid Amalia; Clausen, Thomas; Mburu, Christina Brux & Middelthon, Anne-Lise Orvin (2014). The role of substance use and morality in violent crime - a qualitative study among imprisoned individuals in opioid maintenance treatment. Harm Reduction Journal.  ISSN 1477-7517.  11:24 . doi: 10.1186/1477-7517-11-24
  • Havnes, Ingrid Amalia; Clausen, Thomas & Middelthon, Anne-Lise Orvin (2014). Execution of control among 'non-compliant', imprisoned individuals in opioid maintenance treatment. International journal of drug policy.  ISSN 0955-3959.  25(3), s 480- 485 . doi: 10.1016/j.drugpo.2014.01.018
  • Martinez, Priscilla; Lien, Lars; Landheim, Anne; Kowal, Paul & Clausen, Thomas (2014). Quality of life and social engagement of alcohol abstainers and users among older adults in South Africa. BMC Public Health.  ISSN 1471-2458.  14(316) . doi: 10.1186/1471-2458-14-316 Show summary
  • Riksheim, Marianne; Gossop, Michael & Clausen, Thomas (2014). From methadone to buprenorphine: Changes during a 10 year period within a national opioid maintenance treatment programme. Journal of Substance Abuse Treatment.  ISSN 0740-5472.  46(3), s 291- 294 . doi: 10.1016/j.jsat.2013.10.006 Show summary
  • Røislien, Jo; Clausen, Thomas; Gran, Jon Michael & Bukten, Anne (2014). Accounting for individual differences and timing of events: Estimating the effect of treatment on criminal convictions in heroin users. BMC Medical Research Methodology.  ISSN 1471-2288.  14(68) . doi: 10.1186/1471-2288-14-68
  • Thapa, Suraj Bahadur; Martinez, Priscilla & Clausen, Thomas (2014). Depression and its correlates in South Africa and Ghana among people aged 50 and above: Findings from the WHO Study on global AGEing and adult health. African Journal of Psychiatry.  ISSN 1994-8220.  17(6) . doi: 10.4172/Psychiatry.1000167
  • Vederhus, John-Kåre; Timko, Christine; Kristensen, Øistein; Hjemdal, Bente & Clausen, Thomas (2014). Motivational intervention to enhance post-detoxification 12-Step group affiliation: A randomized controlled trial. Addiction.  ISSN 0965-2140.  109(5), s 766- 773 . doi: 10.1111/add.12471
  • Waal, Helge; Clausen, Thomas; Gjersing, Linn Renathe & Gossop, Michael (2014). Open drug scenes: responses of five European cities. BMC Public Health.  ISSN 1471-2458.  14(853) . doi: 10.1186/1471-2458-14-853 Show summary
  • Bukten, Anne; Herskedal, Aina; Skurtveit, Svetlana; Bramness, Jørgen Gustav & Clausen, Thomas (2013). Driving under the influence (DUI) among patients in opioid maintenance treatment (OMT): a registry-based national cohort study. Addiction.  ISSN 0965-2140.  108(11), s 1954- 1961 . doi: 10.1111/add.12275
  • Bukten, Anne; Røislien, Jo; Skurtveit, Svetlana; Waal, Helge; Gossop, Michael & Clausen, Thomas (2013). A day-by-day investigation of changes in criminal convictions before and after entering and leaving opioid maintenance treatment: a national cohort study. BMC Psychiatry.  ISSN 1471-244X.  13 . doi: 10.1186/1471-244X-13-262 Full text in Research Archive.
  • Gjersing, Linn; Jonassen, Kristine V.; Biong, Stian; Ravndal, Edle; Waal, Helge; Bramness, Jørgen G. & Clausen, Thomas (2013). Diversity in causes and characteristics of drug-induced deaths in an urban setting. Scandinavian Journal of Public Health.  ISSN 1403-4948.  41(2), s 119- 125 . doi: 10.1177/1403494812472007 Show summary
  • Havnes, Ingrid Amalia; Clausen, Thomas & Middelthon, Anne-Lise Orvin (2013). 'Diversion' of methadone or buprenorphine: 'harm' versus 'helping'. Harm Reduction Journal.  ISSN 1477-7517.  10:24 . doi: 10.1186/1477-7517-10-24
  • Opsal, Anne; Kristensen, Øistein; Larsen, Tor Ketil; Syversen, Gro; Rudshaug, Elise Bakke Aasen; Gerdner, Arne & Clausen, Thomas (2013). Factors associated with involuntary admissions among patients with substance use disorders and comorbidity: a cross-sectional study. BMC Health Services Research.  ISSN 1472-6963.  13 . doi: 10.1186/1472-6963-13-57
  • Rossow, Ingeborg & Clausen, Thomas (2013). The collectivity of drinking cultures: is the theory applicable to African settings?. Addiction.  ISSN 0965-2140.  108(9), s 1612- 1617 . doi: 10.1111/add.12220 Full text in Research Archive. Show summary
  • Skeie, Ivar; Brekke, Mette; Clausen, Thomas; Gossop, Michael; Lindbæk, Morten; Reinertsen, Even; Thoresen, Magne & Waal, Helge (2013). Increased Somatic Morbidity in the First Year after Leaving Opioid Maintenance Treatment: Results from a Norwegian Cohort Study. European Addiction Research.  ISSN 1022-6877.  19(4), s 194- 201 . doi: 10.1159/000345229
  • Vieweg, W. Victor R.; Hasnain, Mehrul; Howland, Robert H.; Clausen, Thomas; Koneru, Jayanthi N.; Kogut, Christopher; Breden Crouse, Ericka L.; Hancox, Jules C.; Fernandez, Antony & Pandurangi, Ananda K. (2013). Methadone, QTc interval prolongation, and torsade de pointes: Case reports offer the best understanding of this problem. Therapeutic Advances in Psychopharmacology.  ISSN 2045-1253.  3(4), s 219- 232 . doi: 10.1177/2045125312469982
  • Bukten, Anne; Skurtveit, Svetlana; Gossop, Michael; Waal, Helge; Stangeland, Per Ingolf; Havnes, Ingrid Amalia & Clausen, Thomas (2012). Engagement with opioid maintenance treatment and reductions in crime: a longitudinal national cohort study. Addiction.  ISSN 0965-2140.  107(2), s 393- 399 . doi: 10.1111/j.1360-0443.2011.03637.x
  • Havnes, Ingrid Amalia; Bukten, Anne; Gossop, Michael; Waal, Helge; Stangeland, Per Ingolf & Clausen, Thomas (2012). Reductions in convictions for violent crime during opioid maintenance treatment: A longitudinal national cohort study. Drug And Alcohol Dependence.  ISSN 0376-8716.  124(3), s 307- 310 . doi: 10.1016/j.drugalcdep.2012.02.005
  • Vederhus, John-Kåre; Kristensen, Øistein; Clausen, Thomas & Gossop, Michael (2012). Turn something bad into something good. British Journal of General Practice.  ISSN 0960-1643.  62(594), s 32- 32 . doi: 10.3399/bjgp12X616382
  • Waal, Helge; Brekke, Mette; Clausen, Thomas; Lindbæk, Morten; Rosta, Judith; Skeie, Ivar & Aasland, Olaf Gjerløw (2012). Fastlegers syn på legemiddelassistert rehabilitering. Tidsskrift for Den norske legeforening.  ISSN 0029-2001.  132(16), s 1861- 1866 . doi: 10.4045/tidsskr.12.0124
  • Bramness, Jørgen Gustav; Clausen, Thomas; Duckert, Fanny; Ravndal, Edle & Waal, Helge (2011). Addiction Research Centres and the Nurturing of Creativity The Norwegian Centre for Addiction Research (SERAF). Addiction.  ISSN 0965-2140.  106(8), s 1381- 1385 . doi: 10.1111/j.1360-0443.2010.03086.x
  • Bukten, Anne; Skurtveit, Svetlana; Gossop, Michael; Waal, Helge; Stangeland, Per Ingolf & Clausen, Thomas (2011). The influence of programme differences on crime reduction in opioid maintenance treatment : an analysis of regional patterns in Norway. Norsk Epidemiologi.  ISSN 0803-2491.  21(1), s 99- 106
  • Bukten, Anne; Skurtveit, Svetlana; Stangeland, Per Ingolf; Gossop, Michael; Willersrud, Astrid Brandsberg; Waal, Helge; Havnes, Ingrid Amalia & Clausen, Thomas (2011). Criminal convictions among dependent heroin users during a 3-year period prior to opioid maintenance treatment: A longitudinal national cohort study. Journal of Substance Abuse Treatment.  ISSN 0740-5472.  41(4), s 407- 414 . doi: 10.1016/j.jsat.2011.06.006
  • Fredheim, Olav Magnus; Borchgrevink, Petter Chr.; Nordstrand, Berit; Clausen, Thomas & Skurtveit, Svetlana (2011). Prescription of analgesics to patients in opioid maintenance therapy: A pharmacoepidemiological study. Drug And Alcohol Dependence.  ISSN 0376-8716.  116(1-3), s 158- 162 . doi: 10.1016/j.drugalcdep.2010.12.014
  • Gjersing, Linn Renathe; Waal, Helge; Røislien, Jo; Gossop, Michael & Clausen, Thomas (2011). Variations in treatment organisation, practices and outcomes within the Norwegian Opioid Maintenance Treatment Programme. Norsk Epidemiologi.  ISSN 0803-2491.  21(1), s 113- 118 Show summary
  • Hanssen, Anne-Randi; Ropstad, Geir; Kristensen, Øistein & Clausen, Thomas (2011). Kurs i røykeavvenning for cannabisbrukere - en oppfølgingsstudie. Sykepleien Forskning.  ISSN 1890-2936.  6(4), s 368- 374 . doi: 10.4220/sykepleienf.2011.0188
  • Lobmaier, Philipp Paul; Dalsbø, Therese Kristine & Clausen, Thomas (2011). Nalokson nesespray kan redusere risikoen for dødelige heroinoverdoser. Norsk Epidemiologi.  ISSN 0803-2491.  21(1), s 107- 111 Full text in Research Archive.
  • Martinez, Priscilla; Landheim, Anne; Clausen, Thomas & Lien, Lars (2011). A comparison of alcohol use and correlates of drinking patterns among men and women aged 50 and above in Ghana and South Africa. African Journal of Drug and Alcohol Studies.  ISSN 1531-4065.  10(2), s 75- 87
  • Martinez, Priscilla; Røislien, Jo; Naidoo, Nirmala & Clausen, Thomas (2011). Alcohol abstinence and drinking among African women: data from the World Health Surveys. BMC Public Health.  ISSN 1471-2458.  11 . doi: 10.1186/1471-2458-11-160
  • Opsal, Anne; Clausen, Thomas; Kristensen, Øistein; Elvik, Ivar; Joa, Inge & Larsen, Tor Ketil (2011). Involuntary hospitalization of first-episode psychosis with substance abuse during a 2-year follow-up. Acta Psychiatrica Scandinavica.  ISSN 0001-690X.  124(3), s 198- 204 . doi: 10.1111/j.1600-0447.2011.01700.x
  • Opsal, Anne; Kristensen, Øistein; Ruud, Torleif; Larsen, Tor Ketil; Gråwe, Rolf W. & Clausen, Thomas (2011). Substance abuse inpatients admitted voluntarily and involuntarily to acute psychiatric wards: a national cross-sectional study. Norsk Epidemiologi.  ISSN 0803-2491.  21(1), s 85- 91 Show summary
  • Vederhus, John-Kåre; Timko, Christine; Kristensen, Øistein & Clausen, Thomas (2011). The courage to change: Patient perceptions of 12-Step fellowships. BMC Health Services Research.  ISSN 1472-6963.  11 . doi: 10.1186/1472-6963-11-339
  • Anchersen, Katinka; Hansteen, Viggo; Gossop, Michael; Clausen, Thomas & Waal, Helge (2010). Opioid maintenance patients with QTc prolongation Congenital long QT syndrome mutation may be a contributing risk factor. Drug And Alcohol Dependence.  ISSN 0376-8716.  112(3), s 216- 219 . doi: 10.1016/j.drugalcdep.2010.06.015
  • Clausen, Thomas & Wilson, Adrian (2010). Twenty five years of expectation: where are the services for the older mentally ill in Africa?. International Psychiatry.  ISSN 1749-3676.  7(2), s 32- 34
  • Gjersing, Linn Renathe; Caplehorn, John RM & Clausen, Thomas (2010). Cross-cultural adaptation of research instruments: language, setting, time and statistical considerations. BMC Medical Research Methodology.  ISSN 1471-2288.  10 . doi: 10.1186/1471-2288-10-13
  • Gjersing, Linn Renathe; Waal, Helge; Caplehorn, John RM; Gossop, Michael & Clausen, Thomas (2010). Staff attitudes and the associations with treatment organisation, clinical practices and outcomes in opioid maintenance treatment. BMC Health Services Research.  ISSN 1472-6963.  10 . doi: 10.1186/1472-6963-10-194

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  • Muller, Ashley; Clausen, Thomas & Skurtveit, Svetlana (2017). Building an abstinent network to support quality of life gains through treatment. Show summary
  • Bukten, Anne; Stavseth, Marianne Riksheim; Skurtveit, Svetlana; Kunøe, Nikolaj; Lobmaier, Philipp Paul; Lund, Ingunn Olea & Clausen, Thomas (2016). Rusmiddelbruk og helsesituasjon blant innsatte i norske fengsel. Resultater fra The Norwegian offender mental health and addiction study (NorMA). Full text in Research Archive.
  • Havnes, Ingrid Amalia; Clausen, Thomas & Bukten, Anne (2016). Anabolic androgenic steroid use prior to and during imprisonment - findings from a Norwegian national prison survey.
  • Lobmaier, Philipp Paul & Clausen, Thomas (2016). Radical red tape reduction by government supported nasal naloxone: the Norwegian pilot project is innovative, safe and an important contribution to further development and dissemination of take-home naloxone. Addiction.  ISSN 0965-2140.  11(4), s 586- 587 . doi: 10.1111/add.13261
  • Madah-Amiri, Desiree & Clausen, Thomas (2016). The use of public health infrastructure probably the best strategy for national and large-scale naloxone distribution programmes. Addiction.  ISSN 0965-2140.  111(7), s 1309- 1310 . doi: 10.1111/add.13400
  • Tjagvad, Christian; Clausen, Thomas & Skurtveit, Svetlana (2016). Addictive medication in relation to drug treatment and overdose death. Full text in Research Archive. Show summary
  • Clausen, Thomas (2015). Coherent long-term treatment approaches–superior in the treatment of opioid dependence. Addiction.  ISSN 0965-2140.  110(6), s 1006- 1007 . doi: 10.1111/add.12922
  • Havnes, Ingrid Amalia; Clausen, Thomas; Middelthon, Anne-Lise Orvin & Waal, Helge (2015). Violence and diversion of prescribed opioids among individuals in opioid maintenance treatment.A complementary methods study of violent crime convictions in a national cohort and qualitative interviews among prisoners.
  • Clausen, Thomas; Kristensen, Øistein; Clausen, Thomas & Åsland, Reidun (2014). Re: Pasienter som avbryter LAR-behandling - hvordan går det med dem?. Tidsskrift for Den norske legeforening.  ISSN 0029-2001.  134(16), s 1548- 1549 . doi: 10.4045/tidsskr.14.0927
  • Skeie, Ivar; Clausen, Thomas & Bukten, Anne (2014). I. Skeie og medarbeidere svarer: :. Tidsskrift for Den norske legeforening.  ISSN 0029-2001.  134(16), s 1548 . doi: 10.4045/tidsskr.14.0922
  • Skeie, Ivar; Clausen, Thomas & Bukten, Anne (2014). Legemiddelassistert rehabilitering – viktig behandling med dilemmaer :. Tidsskrift for Den norske legeforening.  ISSN 0029-2001.  134(11), s 1156- 1158 . doi: 10.4045/tidsskr.13.1429
  • Tjagvad, Christian; Petersen, Helle; Thylstrup, Birgitte; Biong, Stian & Clausen, Thomas (2014). Forgiftningsdødsfald og øvrige narkotikarelaterede dødsfald i Danmark 2008-2011.
  • Martinez, Priscilla; Lien, Lars; Clausen, Thomas & Landheim, Anne (2013). Alcohol use in special populations in Africa: Data from the World Health Survey and Study on Global AGEing and adult health.
  • Opsal, Anne; Clausen, Thomas & Larsen, Tor Ketil (2013). Involuntarily admitted patients with substance use disorders.
  • Wüsthoff, Linda Elise; Rognli, Eline Borger; Waal, Helge & Clausen, Thomas (2013). Lost in Downtown Oslo - How did they get there and how do they get out? - A Project presentation.
  • Bramness, Jørgen Gustav; Clausen, Thomas; Ravndal, Edle & Waal, Helge (2012). LAR- forskningen 2011.
  • Bukten, Anne; Clausen, Thomas & Skurtveit, Svetlana (2012). Criminal convictions among patients in opioid maintenance treatment in Norway. A national cohort study.
  • John-Kåre, Vederhus & Clausen, Thomas (2012). Addiction professionals’ and substance abuse patients’ attitudes towards and usage of 12-step-based self-help groups.
  • Waal, Helge; Clausen, Thomas; Håseth, Atle & Lillevold, Pål Henrik (2012). Statusrapport 2011 LAR i Helseforetakene.
  • Bukten, Anne; Røislien, Jo; Skurtveit, Svetlana & Clausen, Thomas (2011). GENDER DIFFERENCES IN CRIME DURING PERIODS OF TRANSITION IN OPIOID MAINTENANCE TREATMENT: A NATIONAL COHORT STUDY. Drug and Alcohol Review.  ISSN 0959-5236.  30, s 16- 16
  • Clausen, Thomas (2011). Mortality is reduced while on opiate maintenance treatment, but there is a temporary increase in mortality immediately after starting and stopping treatment, a finding that may vary by setting. Evidence-Based Medicine.  ISSN 1356-5524.  16(3), s 94- 95
  • Gjersing, Linn Renathe; Biong, Stian Nissen; Ravndal, Edle; Waal, Helge; Bramness, Jørgen Gustav & Clausen, Thomas (2011). Dødelige overdoser i Oslo 2006 til 2008 : En helhetlig gjennomgang. Rapport. 2.
  • Gjersing, Linn Renathe & Clausen, Thomas (2011). Holdninger og behandlinger. Rus & samfunn.  ISSN 1500-8614.  5(3), s 28- 29
  • Gjersing, Linn Renathe; Clausen, Thomas & Waal, Helge (2011). Staff attitudes towards opioid maintenance treatment (OMT) and the associations with treatment. Series of dissertations submitted to the Faculty of Medicine, University of Oslo. 1132.
  • Gjersing, Linn Renathe; Jonassen, Kristine Vinge; Skurtveit, Svetlana; Bramness, Jørgen Gustav & Clausen, Thomas (2011). A descriptive registry study of those who died from drug-induced deaths between 2006-2008 in Oslo.
  • Hjemdahl, Bente; John-Kåre, Vederhus & Clausen, Thomas (2011). Quality of Life (QoL) - Perceived QoL among Patients Admitted to Detox.
  • Waal, Helge; Clausen, Thomas; Håseth, Atle & Lillevold, Pål Henrik (2011). SERAF rapport 1/2012. Statusrapport 2011 LAR i helseforetakene.
  • Waal, Helge; Gjersing, Linn Renathe & Clausen, Thomas (2011). Open Drug Scenes and Overdose Mortality - What to Do? Lessons from five European cities.
  • Bukten, Anne; Havnes, Ingrid Amalia; Skurtveit, Svetlana; Gossop, Michael; Waal, Helge; Stangeland, Per & Clausen, Thomas (2010). Kriminalitet - før, under og etter LAR (1997-2003)Fokus på regionale forskjeller.
  • Bukten, Anne; Skurtveit, Svetlana; Gossop, Michael; Havnes, Ingrid Amalia; Waal, Helge & Clausen, Thomas (2010). The effect of Opioid Maintenance Treatment on rates of criminal charges during a 7 year study period: A longitudinal national cohort study.
  • Fredheim, Olav Magnus; Borchgrevink, Petter Chr.; Nordstrand, Berit; Clausen, Thomas & Skurtveit, Svetlana (2010). Prescription of analgesics to patients in opioid maintenance therapy - a pharmacoepidemiological study.

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Published Apr. 13, 2011 2:55 PM - Last modified Jan. 11, 2017 4:57 PM