• Associations and predictive power of dietary patterns on metabolic syndrome and its components 

      Moe, Åse Mari; Ytterstad, Elinor; Hopstock, Laila Arnesdatter; Løvsletten, Ola; Carlsen, Monica Hauger; Sørbye, Sigrunn Holbek (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-31)
      Background and aims: Metabolic syndrome (MetS) defines important risk factors in the development of cardiovascular diseases and other serious health conditions. This study aims to investigate the influence of different dietary patterns on MetS and its components, examining both associations and predictive performance.<p> <p>Methods and results: The study sample included 10,750 participants from ...
    • COPD in primary lung cancer patients: prevalence and mortality 

      Ytterstad, Elinor; Moe, Per Christian; Hjalmarsen, Audhild (Journal article; Peer reviewed; Tidsskriftartikkel, 2016-03-23)
      Background: Previous studies have relied on international spirometry criteria to diagnose COPD in patients with lung cancer without considering the effect lung cancer might have on spirometric results. The aim of this study was to examine the prevalence of COPD and emphysema at the time of primary lung cancer diagnosis and to examine factors associated with survival. Materials and methods: Medical ...
    • Estimation of Excess Mortality and Years of Life Lost to COVID-19 in Norway and Sweden between March and November 2020 

      Rypdal, Martin Wibe; Rypdal, Kristoffer; Løvsletten, Ola; Sørbye, Sigrunn Holbek; Ytterstad, Elinor; Bianchi, Filippo Maria (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-08)
      We estimate the weekly excess all-cause mortality in Norway and Sweden, the years of life lost (YLL) attributed to COVID-19 in Sweden, and the significance of mortality displacement. We computed the expected mortality by taking into account the declining trend and the seasonality in mortality in the two countries over the past 20 years. From the excess mortality in Sweden in 2019/20, we estimated ...
    • Exploring Personality and Readiness to Change in Patients With Substance Use Disorders With and Without ADHD 

      Flores, Lizbett; Ytterstad, Elinor; Lensing, Michael B.; Eisemann, Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2016)
      <p><i>Objective</i>: To explore personality and readiness to change among substance use disorders (SUD) patients with and without ADHD.</p> <p><i>Method</i>: SUD + ADHD versus SUD − ADHD patients consecutively entering treatment between 2010 and 2012 were compared concerning personality (Temperament and Character Inventory) and readiness to change (Stages of Change Readiness and Treatment Eagerness ...
    • Frailty in Survival Analysis of Widowhood Mortality 

      Ytterstad, Elinor (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-02)
      Heterogeneity between individuals has attracted attention in the literature of survival analysis for several decades. Widowed individuals also differ; some are more frail than others and thereby have a higher risk of dying. The traditional hazard rate in a survival model is a measure of population risk and does not provide direct information on the unobservable individual risk. A frailty model is ...
    • Holdbarhet på klippfisk. Vekst av rødmidd i klippfisk lagret ved forhøyede temperaturer (AP2) 

      Lorentzen, Grete Elisabeth; Johansen, Jørn-Owe; Breiland, Mette Serine Wesmajervi; Dahl, Reidun Wenche; Sandaker, Elin Kristianne; Ytterstad, Elinor (Research report; Forskningsrapport, 2016-02)
      I prosjektet «Holdbarhet på klippfisk» er det foretatt studier for å fastsette holdbarhet på klippfisk basert på vekst av rødmidd. Denne rapporten referer til studier hvor klippfisk er lagret ved forhøyede temperaturer. Rød misfarging skyldes vekst av rødmidd som er en ekstrem halofil bakterie og denne blir naturlig tilført fisken gjennom saltet. Emballert loins av klippfisk og flekket klippfisk ble ...
    • Identifying dietary patterns across age, educational level and physical activity level in a cross-sectional study: the Tromsø Study 2015 - 2016 

      Moe, Åse Mari; Sørbye, Sigrunn Holbek; Hopstock, Laila Arnesdatter; Carlsen, Monica Hauger; Løvsletten, Ola; Ytterstad, Elinor (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-15)
      <p><b>Background</b> A healthy diet can decrease the risk of several lifestyle diseases. From studying the health effects of single foods, research now focuses on examining complete diets and dietary patterns reflecting the combined intake of different foods. The main goals of the current study were to identify dietary patterns and then investigate how these differ in terms of sex, age, educational ...
    • Influence of different cold storage temperatures during the Rigor mortis phase on fillet contraction and longer-term quality changes of Atlantic cod fillets 

      Aune, Tone Friis; Olsen, Ragnar Ludvig; Akse, Leif; Ytterstad, Elinor; Esaiassen, Margrethe (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-05-01)
      Pre rigor produced fillets of Atlantic cod become shorter and more firm than post rigor produced fillets. In pre rigor excised muscle from warm-blooded animals and warm-water adapted fish, cold shortening, extensive contraction during cold storage, is known to occur. The aim of the present work was to study if the extent of fillet shortening in Atlantic cod could be reduced by a slight temperature ...
    • Leakage from medically-certified to self-certified workplace absence among norwegian employees 

      Karlsen, Geir Runar; Ytterstad, Elinor (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-05)
      There are two different kinds of sickness absence in Norway: self-certified absence (SCA), and medically-certified absence (MCA). In this study of 6437 Norwegian employees, we applied logistic regression models for a dichotomous SCA variable on initially 38 independent vari- ables including age and gender. Our findings showed that employees reporting long-term health issues but no record of MCA ...
    • Modelling suggests limited change in the reproduction number from reopening Norwegian kindergartens and schools during the COVID-19 pandemic 

      Rypdal, Martin Wibe; Rypdal, Veronika Gjertsen; Jakobsen, Per Kristen; Ytterstad, Elinor; Løvsletten, Ola; Klingenberg, Claus; Rypdal, Kristoffer (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-25)
      <i>Background</i> - To suppress the COVID-19 outbreak, the Norwegian government closed all schools on March 13, 2020. The kindergartens reopened on April 20, and the schools on April 27 and May 11 of 2020. The effect of these measures is largely unknown since the role of children in the spread of the SARS-CoV-2 virus is still unclear. There are only a few studies of school closures as a separate ...
    • Quality of life in substance use disorder patients with and without attention deficit hyperactivity disorder 12 months after treatment: a naturalistic follow-up study 

      Flores, Lizbett; Lensing, Michael B.; Ytterstad, Elinor; Eisemann, Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-03-22)
      There is sparse research on quality of life (QoL) as an outcome measure in patients with substance use disorders (SUD), with or without attention deficit hyperactivity disorder (ADHD). We aimed to investigate whether SUD patients with and without ADHD (SUD + ADHD vs. SUD − ADHD) differed in QoL at baseline and at a 12-month follow-up after SUD treatment. The groups were additionally compared with ...