Browsing by Author "Lydersen, Stian"
Now showing items 1-20 of 84
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A conservative weight loss intervention relieves bowel symptoms in morbidly obese subjects with irritable bowel syndrome: a prospective cohort study
Aasbrenn, Martin; Lydersen, Stian; Farup, Per Grønaas (Journal article; Peer reviewed, 2018)Background. Irritable bowel syndrome (IBS) is common in subjects with morbid obesity; the effect of weight loss programs on bowel symptoms is largely unknown. Methods. This prospective cohort study explored bowel symptoms, ... -
Adherence to a Long-Term Physical Activity and Exercise Program After Stroke Applied in a Randomized Controlled Trial
Gunnes, Mari; Langhammer, Birgitta; Aamot, Inger Lise; Lydersen, Stian; Ihle-Hansen, Hege; Indredavik, Bent; Reneflot, Kristine Helen; Schroeter, Walburga; Askim, Torunn (Journal article; Peer reviewed, 2018)Background Persistent physical activity is important to maintain motor function across all stages after stroke. Objective The objective of this study was to investigate adherence to an 18-month physical activity and ... -
A longitudinal study of associations between psychiatric symptoms and disorders and cerebral gray matter volumes in adolescents born very preterm
Lozano-Botellero, Violeta Nazaret; Skranes, Jon Sverre; Bjuland, Knut Jørgen; Håberg, Asta; Lydersen, Stian; Brubakk, Ann-Mari; Indredavik, Marit Sæbø; Martinussen, Marit (Journal article; Peer reviewed, 2017)Background:Being born preterm with very low birthweight (VLBW≤1500 g) poses a risk for cortical andsubcortical gray matter (GM) abnormalities, as well as for having more psychiatric problems during childhood andadolescence ... -
Analysis of Longitudinal Data with Missing Values.: Methods and Applications in Medical Statistics.
Dragset, Ingrid Garli (Master thesis, 2009)Missing data is a concept used to describe the values that are, for some reason, not observed in datasets. Most standard analysis methods are not feasible for datasets with missing values. The methods handling missing data ... -
APOE ε4 lowers age at onset and is a high risk factor for Alzheimer's disease; a case control study from central Norway
Sando, Sigrid Botne; Melquist, Stacey; Cannon, Ashley; Hutton, Michael; Sletvold, Olav; Saltvedt, Ingvild; White, Linda; Lydersen, Stian; Aasly, Jan (Journal article; Peer reviewed, 2008)Background: The objective of this study was to analyze factors influencing the risk and timing of Alzheimer's disease (AD) in central Norway. The APOE ε4 allele is the only consistently identified risk factor for late ... -
A reliability study of the rapid emergency triage and treatment system for children
Henning, Brita; Lydersen, Stian; Døllner, Henrik (Journal article; Peer reviewed, 2016-02-24)Background To evaluate inter- and intrarater reliability of a new Scandinavian triage system for children, the Rapid Emergency Triage and Treatment System-pediatric (RETTS-p). Methods Two observational studies ... -
Associations between parental chronic pain and self-esteem, social competence, and family cohesion in adolescent girls and boys - Family linkage data from the HUNT study
Kaasbøll, Jannike; Ranøyen, Ingunn; Nilsen, Wendy; Lydersen, Stian; Indredavik, Marit Sæbø (Journal article; Peer reviewed, 2015)Background: Parental chronic pain has been associated with adverse outcomes in offspring. However, knowledge on individual and family resilience factors in adolescent offspring of chronic pain sufferers is scarce. This ... -
Atypical event-related potentials revealed during the passive parts of a Go-NoGo task in autism spectrum disorder a case-control study
Høyland, Anne Lise; Nærland, Terje; Engstrøm, Morten; Torske, Tonje; Lydersen, Stian; Andreassen, Ole Andreas (Journal article; Peer reviewed, 2019)Background The core features of autism spectrum disorder (ASD) are easily recognizable in non-structured clinical and real-life situations. The features are often difficult to capture in structured laboratory settings, ... -
Burden of bloodstream infection in an area of Mid-Norway 2002-2013: A prospective population-based observational study
Mehl, Arne; Åsvold, Bjørn Olav; Lydersen, Stian; Paulsen, Julie; Solligård, Erik; Damås, Jan Kristian; Harthug, Stig; Edna, Tom-Harald (Journal article; Peer reviewed, 2017)Background Studies from several countries indicate that the incidence and mortality of bloodstream infection (BSI) have been increasing over time. Methods We studied the burden of disease and death related to BSI in ... -
Changes in BMI-distribution from 1966-69 to 1995-97 in adolescents. The Young-HUNT study, Norway
Bjørnelv, Sigrid; Lydersen, Stian; Mykletun, Arnstein; Holmen, Turid Lingaas (Journal article; Peer reviewed, 2007)Background: The aim of this study was to explore changes in the BMI-distribution over time among Norwegian adolescents. Methods: Height and weight were measured in standardised ways and BMI computed in 6774 adolescents ... -
Child exposure to serious life events, COMT, and aggression: Testing differential susceptibility theory
Hygen, Beate Wold; Belsky, Jay; Stenseng, Frode; Lydersen, Stian; Guzey, Ismail Cuneyt; Wichstrøm, Lars (Journal article; Peer reviewed, 2015)Both genetic and environmental factors contribute to individual differences in aggression. Catechol-O-methyltransferase Val158Met (COMT), a common, functional polymorphism, has been implicated in aggression and aggression ... -
Child maltreatment and quality of life: A study of adolescents in residential care
Greger, Hanne Klæboe; Myhre, Arne Kristian; Lydersen, Stian; Jozefiak, Thomas (Journal article; Peer reviewed, 2016)Background Childhood maltreatment is an important risk factor for mental and physical health problems. Adolescents living in residential youth care (RYC) have experienced a high rate of childhood maltreatment and are a ... -
Chronic pain and pain-related disability across psychiatric disorders in a clinical adolescent sample
Mangerud, Wenche Langfjord; Bjerkeset, Ottar; Lydersen, Stian; Indredavik, Marit Sæbø (Journal article; Peer reviewed, 2013)Background: People who suffer from psychiatric disorders are burdened with a high prevalence of chronic illnesses and pain, but evidence on pain prevalence among adolescents with psychiatric disorders is scarce. The aim ... -
Comorbidities in cerebral palsy: a patient registry study
Hollung, Sandra Julsen; Bakken, Inger Johanne Landsjøåsen; Vik, Torstein; Lydersen, Stian; Wiik, Robert; Aaberg, Kari Modalsli; Andersen, Guro Lillemoen (Journal article; Peer reviewed, 2019)Aim To describe the total burden of disease in individuals with cerebral palsy (CP) in Norway. Method A comprehensive set of disorder categories were extracted from the Norwegian Patient Registry using International ... -
Comparison of driving simulator performance with real driving after alcohol intake: A randomised, single blind, placebo-controlled, cross-over trial
Helland, Arne; Jenssen, Gunnar Deinboll; Lervåg, Lone-Eirin; Westin, Andreas Austgulen; Moen, Terje; Sakshaug, Kristian; Lydersen, Stian; Mørland, Jørg; Slørdal, Lars (Journal article; Peer reviewed, 2013)The purpose of this study was to establish and validate a driving simulator method for assessing drug effects on driving. To achieve this, we used ethanol as a positive control, and examined whether ethanol affects driving ... -
Congenital anomalies and the severity of impairments for cerebral palsy
Jystad, Kjersti Postmyr; Strand, Kristin Melheim; Bjellmo, Solveig; Lydersen, Stian; Klungsøyr, Kari; Stoknes, Magne; Skranes, Jon Sverre; Andersen, Guro Lillemoen; Vik, Torstein (Journal article, 2017)Aim: To study the prevalence of congenital anomalies among children with cerebral palsy (CP) born at term or late preterm, and if CP subtypes and clinical manifestations differ between children with and without congenital ... -
Decreasing prevalence and severity of cerebral palsy in Norway among children born 1999 to 2010 concomitant with improvements in perinatal health
Hollung, Sandra Julsen; Vik, Torstein; Lydersen, Stian; Bakken, Inger Johanne; Andersen, Guro Lillemoen (Journal article; Peer reviewed, 2018)Background The aim of our study was to explore if the prevalence and clinical characteristics of cerebral palsy (CP), concomitant with perinatal health indicators in the general population, remained unchanged for children ... -
Delirium motor subtypes and prognosis in hospitalized geriatric patients – A prospective observational study
Evensen, Sigurd; Saltvedt, Ingvild; Lydersen, Stian; Wyller, Torgeir Bruun; Taraldsen, Kristin; Sletvold, Olav (Journal article; Peer reviewed, 2019)Objective Delirium is common and associated with poor outcomes. Hypoactive motor subtype may predict worse outcome than no-subtype, hyperactive and mixed delirium, but uncertainty remains due to heterogeneity of results ... -
Detecting Psychiatric Disorders in Preschoolers: Screening With the Strengths and Difficulties Questionnaire
Sveen, Trude Hamre; Berg-Nielsen, Turid Suzanne; Lydersen, Stian; Wichstrøm, Lars (Journal article; Peer reviewed, 2013)Objective: To examine screening efficiency for preschool psychopathology by comparing the Strengths and Difficulties Questionnaire findings against diagnostic information, and to determine the added value of impact scores ... -
Disease activity during and after pregnancy in women with axial spondyloarthritis: a prospective multicentre study
Ursin, Kristin; Lydersen, Stian; Skomsvoll, Johan Fredrik; Wallenius, Marianne (Journal article; Peer reviewed, 2018)Objective The aim was to study disease activity in women with axial spondyloarthritis (axSpA) during and after pregnancy. Methods The study included 179 pregnancies in 166 women with axSpA from a Norwegian nationwide ...