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Blar i Bergen Open Research Archive på forfatter "Vedaa, Øystein"

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    • The Association Between Shift Work and Immunological Biomarkers in Nurses 

      Bjorvatn, Bjørn; Axelsson, John; Pallesen, Ståle; Waage, Siri; Vedaa, Øystein; Blytt, Kjersti Marie; Buchvold, Hogne Vikanes; Moen, Bente Elisabeth; Thun, Eirunn (Journal article; Peer reviewed, 2020)
      Objectives: Shift work is associated with several negative health effects. The underlying pathophysiological mechanisms are unclear, but low-grade inflammation has been suggested to play a role. This project aimed to ...
    • The associations between low-level gaming, high-level gaming and problematic alcohol use 

      Erevik, Eilin K.; Torsheim, Torbjørn; Andreassen, Cecilie Schou; Krossbakken, Elfrid; Vedaa, Øystein; Pallesen, Ståle (Peer reviewed; Journal article, 2019-12)
      The current study aimed to investigate associations between gaming and different patterns of problematic alcohol use, controlling for important demographics, personality and mental health covariates. Data was collected by ...
    • Demographical, personality, alcohol use, and mental health characteristics associated with different alcoholic beverage preferences among students 

      Erevik, Eilin K.; Torsheim, Torbjørn; Vedaa, Øystein; Andreassen, Cecilie Schou; Pallesen, Ståle (Journal article; Peer reviewed, 2020-10-20)
      The study investigates correlates (i.e. demographics, personality, alcohol use and alcohol-related harm, alcohol expectancies, and mental health) of different alcoholic beverage preferences (i.e. beer/alcopops/cider, wine, ...
    • Demographics, personality and substance-use characteristics associated with forming romantic relationships 

      Erevik, Eilin K.; Pallesen, Ståle; Andreassen, Cecilie Schou; Vedaa, Øystein; Skogstad, Anders; Dhir, Amandeep; Torsheim, Torbjørn (Peer reviewed; Journal article, 2020)
      The current study aimed to identify demographic, personality and substance-use characteristics associated with forming romantic relationships. Data were collected by two online surveys among students in Bergen, Norway, ...
    • Disclosure and exposure of alcohol on social media and later alcohol use: A large-scale longitudinal study 

      Erevik, Eilin K.; Torsheim, Torbjørn; Andreassen, Cecilie Schou; Vedaa, Øystein; Pallesen, Ståle (Peer reviewed; Journal article, 2017-11-01)
      This article aims to investigate whether alcohol-related disclosure and exposure on social media can predict later alcohol use, and to identify covariates in these relationships. Data were collected by online surveys (two ...
    • Effects of digital cognitive behavioural therapy for insomnia on insomnia severity: a large-scale randomised controlled trial 

      Vedaa, Øystein; Kallestad, Håvard; Scott, Janine Linda; Smith, Otto Robert Frans; Pallesen, Ståle; Morken, Gunnar; Langsrud, Knut; Gehrman, Philip; Thorndike, Frances P.; Ritterband, Lee M.; Harvey, Allison G.; Stiles, Tore C; Sivertsen, Børge (Journal article, 2020)
      Background Although several large-scale randomised controlled trials have shown the efficacy of digital cognitive behavioural therapy for insomnia (dCBT-I), there is a need to validate widespread dissemination of dCBT-I ...
    • “Freshman’s week”: characteristics associated with participation and experiencing adverse effects 

      Erevik, Eilin K.; Pallesen, Ståle; Vedaa, Øystein; Andreassen, Cecilie Schou; Torsheim, Torbjørn (Peer reviewed; Journal article, 2018-05-29)
      Background: “Freshman’s week” (FW) is a Norwegian initiation ritual to higher education. Previous research has suggested that FW-participation is associated with better social adjustment to the student ...
    • General and alcohol-related social media use and mental health: A large-sample longitudinal study 

      Erevik, Eilin K.; Pallesen, Ståle; Vedaa, Øystein; Andreassen, Cecilie Schou; Dhir, Amandeep; Torsheim, Torbjørn (Journal article; Peer reviewed, 2020-05)
      The current study aimed to investigate if general and alcohol-related social media use predicts symptoms of depression and anxiety. Students in Bergen, Norway, participated in a Web-based survey during fall 2015 (T1) and ...
    • Habitual Sleep, Social Jetlag, and Reaction Time in Youths With Delayed Sleep–Wake Phase Disorder. A Case–Control Study 

      Saxvig, Ingvild W.; Wilhelmsen-Langeland, Ane; Pallesen, Ståle; Nordhus, Inger Hilde; Vedaa, Øystein; Bjorvatn, Bjørn (Peer reviewed; Journal article, 2019-11-12)
      The aim of this study was to explore habitual sleep, social jetlag, and day-to-day variations in sleep (measured as intra-individual standard deviation, ISD) in youths with delayed sleep–wake phase disorder (DSWPD), compared ...
    • Health-promoting work schedules: protocol for a large-scale cluster randomised controlled trial on the effects of a work schedule without quick returns on sickness absence among healthcare workers 

      Vedaa, Øystein; Djupedal, Ingebjørg Louise Rockwell; Svensen, Erling; Waage, Siri; Bjorvatn, Bjørn; Pallesen, Ståle; Lie, Stein Atle; Nielsen, Morten Birkeland; Harris, Anette Kristoffersen (Journal article; Peer reviewed, 2022)
      Introduction In shift work, quick returns refer to transitions between two shifts with less than 11 hours available rest time. Twenty-three per cent of employees in European countries reported having quick returns. Quick ...
    • How the Norwegian population was affected by non-pharmaceutical interventions during the first six weeks of the COVID-19 lockdown 

      Mæland, Silje; Bjørknes, Ragnhild; Lehmann, Stine; Sandal, Gro Mjeldheim; Hazell, William; Rabben, Åsgeir Kjetland; Vedaa, Øystein; Skogen, Jens Christoffer; Fadnes, Lars T. (Journal article; Peer reviewed, 2021)
      Aims The aim of this study was to examine how the Norwegian general adult population was affected by non-pharmaceutical interventions during the first six weeks of the COVID-19 lockdown. We assessed quarantine, symptoms, ...
    • 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 (Peer reviewed; Journal article, 2019-12)
      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: ...
    • 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 (Peer reviewed; Journal article, 2018-06)
      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 ...
    • 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 (Peer reviewed; Journal article, 2019-05)
      Purpose: 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. Methods: A total of 1538 ...
    • 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 (Peer reviewed; Journal article, 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, ...
    • A longitudinal study on the association between quick returns and occupational accidents 

      Vedaa, Øystein; Harris, Anette; Waage, Siri; Bjorvatn, Bjørn; Thun, Eirunn; Buchvold, Hogne Vikanes; Djupedal, Ingebjørg Louise Rockwell; Pallesen, Ståle (Journal article, 2020)
      Objective: This study aimed to investigate how change in the number of quick returns [(QR) <11 hours between consecutive shifts] longitudinally is associated with risk of occupational accidents among nurses. Methods: ...
    • The Norwegian remote intervention program for problem gambling: Short- and long-term outcomes 

      Erevik, Eilin K.; Pallesen, Ståle; Mohn, Mette; Aspeland, Trond; Vedaa, Øystein; Torsheim, Torbjørn (Journal article; Peer reviewed, 2020)
      Background and aim: Although problem gambling typically involves substantial distress, few seek face-to-face treatment. In Norway, problem gamblers can participate in a governmental supported internet- and telephone-based ...
    • 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 (Peer reviewed; Journal article, 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, ...
    • Patients with delayed sleep-wake phase disorder show poorer executive functions compared to good sleepers 

      Wilhelmsen-Langeland, Ane; Saxvig, Ingvild W.; Johnsen, Emma Hole; Marszalek, Maja Anna; Andersen, Maria Isolde Wiig; Sætre, Vild Katrine; Lundervold, Astri; Vedaa, Øystein; Nordhus, Inger Hilde; Pallesen, Ståle; Bjorvatn, Bjørn (Peer reviewed; Journal article, 2019-02)
      Objective: Delayed Sleep-Wake Phase Disorder (DSWPD) is associated with negative outcomes, including reduced daytime performance and difficulties with treatment adherence. These outcomes are mediated by executive functions ...
    • A randomized controlled trial with bright light and melatonin for treatment of delayed sleep phase disorder. Effects on subjective and objective sleepiness and cognitive function. 

      Wilhelmsen-Langeland, Ane; Saxvig, Ingvild West; Pallesen, Ståle; Nordhus, Inger Hilde; Vedaa, Øystein; Lundervold, Astri Johansen; Bjorvatn, Bjørn (Peer reviewed; Journal article, 2013-10)
      Delayed sleep phase disorder (DSPD) is a circadian rhythm sleep disorder. Patients with DSPD have problems initiating sleep if they go to bed at a conventional time and they often have problems waking at desired times. If ...

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