Thomas Clausen

Summary

Affiliation: University of Oslo
Country: Norway

Publications

  1. pmc Factors associated with involuntary admissions among patients with substance use disorders and comorbidity: a cross-sectional study
    Anne Opsal
    Sørlandet Hospital, Addiction Unit, Postbox 416, Kristiansand N 4604, Norway
    BMC Health Serv Res 13:57. 2013
  2. pmc The courage to change: patient perceptions of 12-Step fellowships
    John Kåre Vederhus
    Addiction Unit, Sørlandet Hospital HF, Kristiansand, Norway
    BMC Health Serv Res 11:339. 2011
  3. pmc Treatment of polydrug-using opiate dependents during withdrawal: towards a standardisation of treatment
    Øistein Kristensen
    Addiction Unit, Sørlandet Hospital, Kristiansand, Norway
    BMC Psychiatry 6:54. 2006
  4. pmc Attitudes towards 12-step groups and referral practices in a 12-step naive treatment culture; a survey of addiction professionals in Norway
    John Kåre Vederhus
    Addiction Unit, Sørlandet Hospital, Kristiansand, Norway
    BMC Health Serv Res 9:147. 2009
  5. doi request reprint Mortality among opiate users: opioid maintenance therapy, age and causes of death
    Thomas Clausen
    University of Oslo, Medical Faculty, Institute of Psychiatry, Norwegian Centre for Addiction Research SERAF, Oslo, Norway
    Addiction 104:1356-62. 2009
  6. doi request reprint Diverse alcohol drinking patterns in 20 African countries
    Thomas Clausen
    University of Oslo, Institute of Psychiatry, Norwegian Centre for Addiction Research, Kirkeveien 166, N 0407 Oslo, Norway
    Addiction 104:1147-54. 2009
  7. ncbi request reprint Mortality prior to, during and after opioid maintenance treatment (OMT): a national prospective cross-registry study
    Thomas Clausen
    University of Oslo, Medical Faculty, Institute of Psychiatry, SERAF National Centre for Addiction Research, Oslo, Norway
    Drug Alcohol Depend 94:151-7. 2008
  8. ncbi request reprint Nutritional status, tobacco use and alcohol consumption of older persons in Botswana
    T Clausen
    Department of General Practice and Community Medicine, Faculty of Medicine, University of Oslo P O Box 1130, Blindern, 0318 Oslo, Norway
    J Nutr Health Aging 10:104-10. 2006
  9. ncbi request reprint Chronic diseases and health inequalities in older persons in Botswana (southern Africa): a national survey
    T Clausen
    Department of General Practice and Community Medicine, Faculty of Medicine, University of Oslo, P O Box 1130, Blindern, 0318, Oslo, Norway
    J Nutr Health Aging 9:455-61. 2005
  10. ncbi request reprint Predictors of food variety and dietary diversity among older persons in Botswana
    Thomas Clausen
    Department of General Practice and Community Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
    Nutrition 21:86-95. 2005

Detail Information

Publications28

  1. pmc Factors associated with involuntary admissions among patients with substance use disorders and comorbidity: a cross-sectional study
    Anne Opsal
    Sørlandet Hospital, Addiction Unit, Postbox 416, Kristiansand N 4604, Norway
    BMC Health Serv Res 13:57. 2013
    ....
  2. pmc The courage to change: patient perceptions of 12-Step fellowships
    John Kåre Vederhus
    Addiction Unit, Sørlandet Hospital HF, Kristiansand, Norway
    BMC Health Serv Res 11:339. 2011
    ..This study investigated the relationship between patient perceptions of TSGs and the intent to participate in TSGs after receiving detoxification treatment...
  3. pmc Treatment of polydrug-using opiate dependents during withdrawal: towards a standardisation of treatment
    Øistein Kristensen
    Addiction Unit, Sørlandet Hospital, Kristiansand, Norway
    BMC Psychiatry 6:54. 2006
    ....
  4. pmc Attitudes towards 12-step groups and referral practices in a 12-step naive treatment culture; a survey of addiction professionals in Norway
    John Kåre Vederhus
    Addiction Unit, Sørlandet Hospital, Kristiansand, Norway
    BMC Health Serv Res 9:147. 2009
    ..This study describes clinicians' attitudes and referral practices to TSGs in Norway where health authorities seek to promote self-help participation, but where the treatment culture is unfamiliar with 12-step fellowships...
  5. doi request reprint Mortality among opiate users: opioid maintenance therapy, age and causes of death
    Thomas Clausen
    University of Oslo, Medical Faculty, Institute of Psychiatry, Norwegian Centre for Addiction Research SERAF, Oslo, Norway
    Addiction 104:1356-62. 2009
    ..This study investigates how age of opioid users is related to causes of death prior to, during and after opioid maintenance treatment (OMT), and estimates risks of death from various causes in relation to age...
  6. doi request reprint Diverse alcohol drinking patterns in 20 African countries
    Thomas Clausen
    University of Oslo, Institute of Psychiatry, Norwegian Centre for Addiction Research, Kirkeveien 166, N 0407 Oslo, Norway
    Addiction 104:1147-54. 2009
    ....
  7. ncbi request reprint Mortality prior to, during and after opioid maintenance treatment (OMT): a national prospective cross-registry study
    Thomas Clausen
    University of Oslo, Medical Faculty, Institute of Psychiatry, SERAF National Centre for Addiction Research, Oslo, Norway
    Drug Alcohol Depend 94:151-7. 2008
    ..The mortality reducing effects of OMT are examined both within treatment and post-treatment. The study separates overdose and total mortality reductions...
  8. ncbi request reprint Nutritional status, tobacco use and alcohol consumption of older persons in Botswana
    T Clausen
    Department of General Practice and Community Medicine, Faculty of Medicine, University of Oslo P O Box 1130, Blindern, 0318 Oslo, Norway
    J Nutr Health Aging 10:104-10. 2006
    ..To describe body mass index (BMI) distribution according to patterns of tobacco use, alcohol consumption and sociodemographic factors of older persons in Botswana...
  9. ncbi request reprint Chronic diseases and health inequalities in older persons in Botswana (southern Africa): a national survey
    T Clausen
    Department of General Practice and Community Medicine, Faculty of Medicine, University of Oslo, P O Box 1130, Blindern, 0318, Oslo, Norway
    J Nutr Health Aging 9:455-61. 2005
    ....
  10. ncbi request reprint Predictors of food variety and dietary diversity among older persons in Botswana
    Thomas Clausen
    Department of General Practice and Community Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
    Nutrition 21:86-95. 2005
    ..We investigated whether food variety and diversity are associated with physical and cognitive functioning in older adults in Botswana and designed a simple set of screening questions that predict food variety in this population...
  11. doi request reprint Engagement with opioid maintenance treatment and reductions in crime: a longitudinal national cohort study
    Anne Bukten
    SERAF Norwegian Centre for Addiction Research, University of Oslo, Norway
    Addiction 107:393-9. 2012
    ..This study investigates changes in criminal involvement among patients in opioid maintenance treatment (OMT) over a 7-year period prior to, during and after treatment, particularly in relation to differences in treatment engagement...
  12. doi request reprint Reductions in convictions for violent crime during opioid maintenance treatment: a longitudinal national cohort study
    Ingrid Havnes
    SERAF Norwegian Centre for Addiction Research, University of Oslo, Kirkevn 166, N 0407 Oslo, Norway
    Drug Alcohol Depend 124:307-10. 2012
    ....
  13. doi request reprint Prevalence and clinical relevance of corrected QT interval prolongation during methadone and buprenorphine treatment: a mortality assessment study
    Katinka Anchersen
    University of Oslo, Institute of Psychiatry, Norwegian Centre for Addiction Research SERAF, Kirkeveien, Oslo, Norway
    Addiction 104:993-9. 2009
    ..To determine the prevalence of corrected QT interval (QTc) prolongation among patients in opioid maintenance treatment (OMT) and to investigate mortality potentially attributable to QTc prolongation in the Norwegian OMT programme...
  14. pmc Diversity in causes and characteristics of drug-induced deaths in an urban setting
    Linn Gjersing
    Norwegian Centre for Addiction Research, University of Oslo, Oslo, Norway
    Scand J Public Health 41:119-25. 2013
    ....
  15. pmc Staff attitudes and the associations with treatment organisation, clinical practices and outcomes in opioid maintenance treatment
    Linn Gjersing
    SERAF Norwegian Centre for Addiction Research, Institute of Clinical Medicine, University of Oslo, Kirkeveien 166, Oslo 0407, Norway
    BMC Health Serv Res 10:194. 2010
    ..The aim of this study was to 1) assess if there were differences in staff attitudes within a national OMT programme, and 2) investigate the associations of staff attitudes with treatment organisation, clinical practices and outcomes...
  16. doi request reprint Opioid maintenance patients with QTc prolongation: congenital long QT syndrome mutation may be a contributing risk factor
    Katinka Anchersen
    Norwegian Centre for Addiction Research SERAF, University of Oslo, Kirkeveien 166, N 0407 Oslo, Norway
    Drug Alcohol Depend 112:216-9. 2010
    ..This study investigates opioid maintenance treatment (OMT) patients found to have corrected QT (QTc) interval above 500 ms, with particular focus on past medical history, genetic testing and cardiac investigations...
  17. doi request reprint A day-by-day investigation of changes in criminal convictions before and after entering and leaving opioid maintenance treatment: a national cohort study
    Anne Bukten
    SERAF Norwegian Centre for Addiction Research, University of Oslo, Kirkveien 166, N 0407, Oslo, Norway
    BMC Psychiatry 13:262. 2013
    ..The aim of this study was to investigate changes in criminal convictions on a day-to-day basis before and after entry or discharge from OMT...
  18. pmc Alcohol abstinence and drinking among African women: data from the World Health Surveys
    Priscilla Martinez
    Norwegian Center for Addiction Research, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway
    BMC Public Health 11:160. 2011
    ..This study aimed to provide a comparative description of alcohol use among women across 20 African countries...
  19. pmc Diminished mental- and physical function and lack of social support are associated with shorter survival in community dwelling older persons of Botswana
    Thomas Clausen
    University of Oslo, Institute of Psychiatry, Oslo, Norway
    BMC Public Health 7:144. 2007
    ..This study may serve as a precursor for more detailed assessments.The objective was to assess diminished function and lack of social support as indicators of short term risk of death...
  20. doi request reprint Driving under the influence (DUI) among patients in opioid maintenance treatment (OMT): a registry-based national cohort study
    Anne Bukten
    SERAF Norwegian Centre for Addiction Research, University of Oslo, Oslo, Norway
    Addiction 108:1954-61. 2013
    ..To investigate convictions for driving under the influence (DUI) before, during and after opioid maintenance treatment (OMT) and to examine factors associated with convictions for DUI during treatment...
  21. ncbi request reprint General practitioners' views on drug-assisted rehabilitation
    Helge Waal
    Norwegian Centre for Addiction Research, Institute of Clinical Medicine, University of Oslo, and Centre for Addiction Treatment, Oslo University Hospital, Norway
    Tidsskr Nor Laegeforen 132:1861-6. 2012
    ..To some degree it restricts the doctor's professional autonomy. The investigation aims to examine GPs' attitudes to the model and in particular the experiences of those who have actively participated...
  22. doi request reprint Criminal convictions among dependent heroin users during a 3-year period prior to opioid maintenance treatment: a longitudinal national cohort study
    Anne Bukten
    SERAF Norwegian Centre for Addiction Research, University of Oslo, Kirkveien 166, Oslo, Norway
    J Subst Abuse Treat 41:407-14. 2011
    ..Coordination between treatment providers and police or courts can play an important role in improving outcomes through better access to treatment...
  23. pmc Cross-cultural adaptation of research instruments: language, setting, time and statistical considerations
    Linn Gjersing
    SERAF Norwegian Centre for Addiction Research, University of Oslo, Oslo, Norway
    BMC Med Res Methodol 10:13. 2010
    ..This paper aims to illustrate the process and required steps involved in the cross-cultural adaptation of a research instrument using the adaptation process of an attitudinal instrument as an example...
  24. doi request reprint Addiction research centres and the nurturing of creativity The Norwegian Centre for Addiction Research (SERAF)
    Jørgen G Bramness
    Norwegian Centre for Addiction Research, University of Oslo, Oslo, Norway
    Addiction 106:1381-5. 2011
    ....
  25. doi request reprint The collectivity of drinking cultures: is the theory applicable to African settings?
    Ingeborg Rossow
    Norwegian Institute for Alcohol and Drug Research, Øvre Slotts gt 2, Oslo, Norway
    Addiction 108:1612-7. 2013
    ..This paper aimed to test this hypothesis by examining the alcohol consumption distributions in African countries with a strong informal control of alcohol...
  26. ncbi request reprint High intake of energy, sucrose, and polyunsaturated fatty acids is associated with increased risk of preeclampsia
    T Clausen
    Department of Obstetrics and Gynecology, Aker University Hospital, Oslo, Norway
    Am J Obstet Gynecol 185:451-8. 2001
    ..Preeclampsia is associated with high body mass index, insulin resistance, and hypertriglyceridemia. Our objective was to investigate prospectively whether diet in the first half of pregnancy is associated with the risk for preeclampsia...
  27. ncbi request reprint Altered plasma concentrations of leptin, transforming growth factor-beta(1) and plasminogen activator inhibitor type 2 at 18 weeks of gestation in women destined to develop pre-eclampsia. Circulating markers of disturbed placentation?
    T Clausen
    Department of Obstetrics and Gynaecology, Aker and Ulleval University Hospitals, Oslo, Norway
    Placenta 23:380-5. 2002
    ..Our objective was to investigate if disturbed placentation in pre-eclamptic women may be recognized in early second trimester as altered plasma levels of factors involved in the formation of the uteroplacental unit...
  28. ncbi request reprint Dyslipidemia in early second trimester is mainly a feature of women with early onset pre-eclampsia
    T Clausen
    Department of Obstetrics and Gynaecology, Aker and Ullevaal University Hospitals, Oslo, Norway
    BJOG 108:1081-7. 2001
    ....