• Association studies of up to 1.2 million individuals yield new insights into the genetic etiology of tobacco and alcohol use 

      Liu, Ming; Jiang, Yu; Wedow, Robbee; Li, Yue; Brazel, David M.; Chen, Fang; Datta, Gargi; Davila-Velderrain, Jose; Mitchell, Amy; Skogholt, Anne Heidi; Sivertsen, Børge; Stordal, Eystein; Morken, Gunnar; Kallestad, Håvard; Heuch, Ingrid; Zwart, John-Anker; Fjukstad, Katrine Kveli; Pedersen, Linda Margareth; Johnsen, Marianne Bakke; Skrove, Marit Synnøve; Indredavik, Marit Sæbø; Drange, Ole Kristian; Bjerkeset, Ottar; Børte, Sigrid; Stensland, Synne; Choquet, Hélène; Docherty, Anna R.; Faul, Jessica D.; Foerster, Johanna R.; Fritsche, Lars; Gabrielsen, Maiken Elvestad; Gordon, Scott D.; Haessler, Jeffrey; Hottenga, Jouke-Jan; Huang, Hongyan; Jang, Seon-Kyeong; Jansen, Philip R.; Ling, Yueh; Mägi, Reedik; Matoba, Nana; McMahon, George; Mulas, Antonella; Orrú, Valeria; Palviainen, Teemu; Pandit, Anita; Reginsson, Gunnar W.; Smith, Jennifer A.; Taylor, Amy E.; Turman, Constance; Willemsen, Gonneke; Young, Hannah; Young, Kendra A.; Zajac, Gregory J.M.; Zhao, Wei; Zhou, Wei; Björnsdóttir, Gyda Thora; Boardman, Jason D.; Boehnke, Michael; Boomsma, Dorret I.; Chen, Chu; Davies, Gareth E.; Eaton, Charles B.; Winsvold, Bendik K S; Hveem, Kristian; Vrieze, Scott (Journal article; Peer reviewed, 2019)
      Tobacco and alcohol use are leading causes of mortality that influence risk for many complex diseases and disorders1. They are heritable2,3 and etiologically related4,5 behaviors that have been resistant to gene discovery ...
    • Associations between symptoms of eating disturbance and frequency of physical activity in a non-clinical, population-based sample of adolescents 

      Heradstveit, Ove; Holmelid, Eva; Klundby, Helene; Søreide, Birgitte; Sivertsen, Børge; Sand, Liv (Journal article; Peer reviewed, 2019)
      Background Physical activity is an important factor related to eating disorders, but the relationship between symptoms of eating disorders and physical activity is multifaceted. The aims of this study were to investigate ...
    • Bullying Involvement in Adolescence: Implications for Sleep, Mental Health, and Academic Outcomes 

      Hysing, Mari; Askeland, Kristin Gärtner; La Greca, Annette M.; Solberg, Mona Elin; Breivik, Kyrre; Sivertsen, Børge (Journal article; Peer reviewed, 2019)
      Adolescents’ involvement in bullying is associated with both sleep and mental health problems, but the nature of this association remains unclear; further, its association with academic outcomes has received little attention. ...
    • Cohort profile: the SHoT-study, a national health and well-being survey of Norwegian university students 

      Sivertsen, Børge; Råkil, Hege; Munkvik, Espen; Lønning, Kari Jussi (Journal article; Peer reviewed, 2019)
      Purpose The SHoT study was set up as a national student health survey for higher education in Norway, conducted at 4-year intervals. The dataset comprises a wide range of self-reported data covering information on mental ...
    • Divorce and adolescent academic achievement: Heterogeneity in the associations by parental education 

      Nilsen, Sondre Aasen; Breivik, Kyrre; Wold, Bente; Askeland, Kristin Gärtner; Sivertsen, Børge; Hysing, Mari; Bøe, Tormod (Peer reviewed; Journal article, 2020)
      Background The link between parental divorce and adolescents’ academic achievement may depend on parental educational levels. However, findings have been inconsistent regarding whether the negative associations between ...
    • Economic Circumstances in Childhood and Subsequent Substance Use in Adolescence – A Latent Class Analysis: The youth@hordaland Study 

      Skogen, Jens Christoffer; Sivertsen, Børge; Hysing, Mari; Heradstveit, Ove; Bøe, Tormod (Journal article; Peer reviewed, 2019)
      The aim of the present study was to investigate the association between longitudinal registry-based data on family income during childhood and self-reported substance use in adolescence, including potential alcohol- or ...
    • Effort-Reward Imbalance Is Associated With Alcohol-Related Problems. WIRUS-Screening Study 

      Skogen, Jens Christoffer; Thørrisen, Mikkel Magnus; Bonsaksen, Tore; Vahtera, Jussi; Sivertsen, Børge; Aas, Randi Wågø (Journal article; Peer reviewed, 2019)
      There is ample evidence of associations between a perceived stressful working environment and several health-related outcomes. To better understand potential mechanisms behind these observations some studies have focused ...
    • Factor Structure and Psychometric Properties of the Resilience Scale for Adolescents (READ) 

      Askeland, Kristin Gärtner; Hysing, Mari; Sivertsen, Børge; Breivik, Kyrre (Journal article; Peer reviewed, 2019)
      Psychometric evaluations of the Resilience Scale for Adolescents (READ) have yielded inconsistent support for the original five-factor solution, with different modifications being proposed. The aim of the present article ...
    • Genetic polymorphisms associated with sleep-related phenotypes; relationships with individual nocturnal symptoms of insomnia in the HUNT study 

      Bragantini, Daniela; Sivertsen, Børge; Gehrman, Philip; Lydersen, Stian; Guzey, Ismail Cuneyt (Journal article; Peer reviewed, 2019)
      Background In recent years, several GWAS (genome wide association studies) of sleep-related traits have identified a number of SNPs (single nucleotides polymorphism) but their relationships with symptoms of insomnia are ...
    • Insomnia, sleep duration and academic performance: A national survey of Norwegian college and university students 

      Vedaa, Øystein; Erevik, Eilin K.; Hysing, Mari; Hayley, Amie C.; Sivertsen, Børge (Journal article; Peer reviewed, 2019)
      Objective The aim of this study was to evaluate the associations between insomnia, sleep duration and self-reported academic performance/failure in a large sample of Norwegian college and university students. Methods This ...
    • Internet-delivered cognitive-behavioral therapy for insomnia and comorbid symptoms 

      Hagatun, Susanne; Vedaa, Øystein; Harvey, Allison G.; Nordgreen, Tine; Smith, Otto Robert Frans; Pallesen, Ståle; Havik, Odd E.; Thorndike, Frances P.; Ritterband, Lee M.; Sivertsen, Børge (Journal article; Peer reviewed, 2018)
      Background Cognitive-behavioral therapy for insomnia (CBTi) is considered the standard treatment. The internet has proven to be a useful and successful tool of providing CBTi. However, few studies have investigated the ...
    • Interplay of subjective and objective economic well-being on the mental health of Norwegian adolescents 

      Bøe, Tormod; Petrie, Keith James; Sivertsen, Børge; Hysing, Mari (Journal article; Peer reviewed, 2019)
      Objective and subjective socioeconomic status (SES) are important determinants of adolescent mental health problems, but we know less about how they interact. Research has demonstrated independent associations of both ...
    • Life satisfaction and mental health among transgender students in Norway 

      Anderssen, Norman; Sivertsen, Børge; Lønning, Kari Jussi; Malterud, Kirsti (Journal article; Peer reviewed, 2020)
      Background Social attitudes to transgender persons and other gender minorities vary around the world, and in many cultures, prejudices and social stigma are common. Consequently, transgender persons face challenges related ...
    • Long working hours are inversely related to sick leave in the following 3 months: a 4-year registry study 

      Vedaa, Øystein; Pallesen, Ståle; Erevik, Eilin K.; Svensen, Erling; Waage, Siri; Bjorvatn, Bjørn; Sivertsen, Børge; Harris, Anette (Journal article; Peer reviewed, 2018)
      The aim of this study was to investigate the effects of long working hours (≥ 12 h shifts) on sick leave using objective records of shift work exposure and of sick leave. A total of 1538 nurses (mean age 42.5, SD 12.0; ...
    • Long-Term Effects of an Unguided Online Cognitive Behavioral Therapy for Chronic Insomnia 

      Vedaa, Øystein; Hagatun, Susanne; Kallestad, Håvard; Pallesen, Ståle; Smith, Otto Robert Frans; Thorndike, Frances P; Ritterband, Lee M.; Sivertsen, Børge (Journal article; Peer reviewed, 2019)
      STUDY OBJECTIVES: The aim of this study was to test the efficacy of fully automated Internet-delivered cognitive behavioral therapy for insomnia (CBT-I) 18 months after the intervention period on sleep, daytime functioning, ...
    • Overcoming insomnia: Protocol for a large-scale randomised controlled trial of online cognitive behaviour therapy for insomnia compared with online patient education about sleep 

      Kallestad, Håvard; Vedaa, Øystein; Scott, Janine Linda; Morken, Gunnar; Pallesen, Ståle; Harvey, Allison G.; Gehrman, Phil; Thorndike, Frances; Ritterband, Lee; Stiles, Tore C; Sivertsen, Børge (Journal article; Peer reviewed, 2018)
      Introduction Insomnia is a major public health concern. While cognitive behaviour therapy for insomnia (CBT-I) is acknowledged as the best available intervention, there are unanswered questions about its wider dissemination, ...
    • Physical exercise and body-mass index in young adults: A national survey of Norwegian university students 

      Grasdalsmoen, Michael; Eriksen, Hege Randi; Lønning, Kari Jussi; Sivertsen, Børge (Journal article; Peer reviewed, 2019)
      Background Physical inactivity and obesity pose a major public health challenge. The aim of this study was to describe the level of physical exercise and body-mass index in college and university students, as well as to ...
    • Psychosocial working conditions and depressive disorder: disentangling effects of job control from socioeconomic status using a life-course approach 

      Svane-Petersen, Annemette Coop; Holm, Anders; Burr, Hermann; Framke, Elisabeth; Melchior, Maria; Rod, Naja Hulvej; Sivertsen, Børge; Stansfeld, Stephen A.; Sørensen, Jeppe Karl; Virtanen, Marianna; Rugulies, Reiner; Madsen, Ida E.H. (Journal article; Peer reviewed, 2019)
      Purpose Job control, the combination of skill discretion and decision authority, is considered a central component of the psychosocial working environment. This longitudinal study examines the relation between job control ...
    • Seasonality and symptoms of depression: A systematic review of the literature 

      Øverland, Simon Nygaard; Woicik, Wojtek; Sikora, Lindsey; Whittaker, Kristoffer; Heli, Hans; Skjelkvåle, Fritjof Stein; Sivertsen, Børge; Colman, Ian (Journal article; Peer reviewed, 2019)
      Aims Lay opinions and published papers alike suggest mood varies with the seasons, commonly framed as higher rates of depression mood in winter. Memory and confirmation bias may have influenced previous studies. We ...
    • Sexual harassment and assault among university students in Norway: A cross-sectional prevalence study 

      Sivertsen, Børge; Nielsen, Morten Birkeland; Madsen, Ida E.H.; Knapstad, Marit; Lønning, Kari Jussi; Hysing, Mari (Journal article; Peer reviewed, 2019)
      Objective The aim of the current study was to provide estimates of both overall and specific forms of sexual harassment among male and female college and university students. Design and setting Data stem from a recent ...