Browsing NTNU Open by Author "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 ... -
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 (Peer reviewed; Journal article, 2020)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 (Journal article; Peer reviewed, 2019)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, ... -
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 (Peer reviewed; 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 (Journal article; Peer reviewed, 2018)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 setting, as well as ... -
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 (Peer reviewed; Journal article, 2020)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 (Journal article; Peer reviewed, 2019)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 ... -
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 ... -
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, ... -
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 (Peer reviewed; Journal article, 2020)Abstract 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 ... -
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, ... -
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 (Journal article; Peer reviewed, 2019)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 ... -
Short and long-term effects of unguided internet-based cognitive behavioral therapy for chronic insomnia in morning and evening persons: a post-hoc analysis
Lien, Mats; Bredeli, Einar Rørstad; Sivertsen, Børge; Kallestad, Håvard; Pallesen, Ståle; Smith, Otto Robert Frans; Faaland, Patrick; Ritterband, Lee M.; Thorndike, Frances P.; Vedaa, Øystein (Journal article; Peer reviewed, 2019)A post-hoc analysis comparing morning and evening persons with insomnia on sleep and mental health characteristics was conducted in order to investigate whether an Internet-based cognitive behavioral therapy for insomnia ... -
Short rest between shifts (quick returns) and night work is associated with work-related accidents
Vedaa, Øystein; Harris, Anette; Erevik, Eilin K.; Waage, Siri; Bjorvatn, Bjørn; Sivertsen, Børge; Moen, Bente Elisabeth; Pallesen, Ståle (Journal article; Peer reviewed, 2019)Purpose The aim of this study was to examine whether less than 11 h between shifts (i.e., quick returns, QRs) and night shifts is associated with self-reported work-related accidents, near accidents or dozing off at work ... -
Sleep in the land of the midnight sun and polar night: The Tromsø study
Sivertsen, Børge; Friborg, Oddgeir; Pallesen, Ståle; Vedaa, Øystein; Hopstock, Laila Arnesdatter (Peer reviewed; Journal article, 2020)While some diseases and human behaviors fluctuate consistently with season, the extent of seasonal variations in sleep, especially at high latitudes, is less consistent. We used data from a geographic region (69º North) ... -
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 (Journal article; Peer reviewed, 2019)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 ... -
Tinder use and romantic relationship formations: A large-scale longitudinal sStudy
Erevik, Eilin K.; Kristensen, Joakim Hellumbråten; Torsheim, Torbjørn; Vedaa, Øystein; Pallesen, Ståle (Peer reviewed; Journal article, 2020)The current paper aims to investigate if Tinder use predicts romantic relationship formation 1 year later and to identify demographic, personality, mental health, and substance use covariates in the relationship between ...