Blar i Bergen Open Research Archive på forfatter "Erga, Aleksander Hagen"
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Assessment of executive function in patients with substance use disorder: A comparison of inventory- and performance-based assessment
Hagen, Egon; Erga, Aleksander Hagen; Hagen, Katrin Pedersen; Nesvåg, Sverre; McKay, James R.; Lundervold, Astri; Walderhaug, Espen (Peer reviewed; Journal article, 2016-07)Introduction Chronic polysubstance abuse (SUD) is associated with neurophysiological and neuroanatomical changes. Neurocognitive impairment tends to affect quality of life, occupational functioning, and the ability to ... -
Cannabis use in Parkinson’s disease—A nationwide online survey study
Erga, Aleksander Hagen; Maple-Grødem, Jodi; Alves, Guido Werner (Journal article; Peer reviewed, 2022)Objectives The aim of this study was to investigate the frequency of use, attitudes toward, and experiences with cannabis and cannabis-related products among people with Parkinson's disease (PwP) living in Norway. Me ... -
Cognitive impairment as a predictor of long-term psychological distress in patients with polysubstance use disorders: a prospective longitudinal cohort study
Hetland, Jens; Lundervold, Astri J.; Erga, Aleksander Hagen (Journal article; Peer reviewed, 2024)Background: The association between polysubstance use disorder (pSUD), mental illness, and cognitive impairments is well established and linked to negative outcomes in substance use disorder treatment. However, it remains ... -
Evolution of impulsive–compulsive behaviors and cognition in Parkinson’s disease
Erga, Aleksander Hagen; Alves, Guido Werner; Tysnes, Ole-Bjørn; Pedersen, Kenn Freddy (Peer reviewed; Journal article, 2020)The longitudinal course of ICBs in patients with Parkinson’s disease (PwP) relative to controls has not been explored as of yet. The aim of this study is to determine the frequency, evolution and associated cognitive and ... -
Impulsive and compulsive behaviors in Parkinson's disease: Impact on quality of and satisfaction with life, and caregiver burden
Erga, Aleksander Hagen; Alves, Guido Werner; Tysnes, Ole-Bjørn; Pedersen, Kenn Freddy (Journal article; Peer reviewed, 2020)Introduction To disentangle the association between impulsive and compulsive behaviors (ICBs), health-related quality of life (HRQOL), satisfaction with life (SwL), and caregiver distress in dyads of people with Parkinson's ... -
The interdependence of substance use, satisfaction with life, and psychological distress: a dynamic structural equation model analysis
Moe, Fredrik Dreyer; Erga, Aleksander Hagen; Bjørnestad, Jone Ravndal; Dettweiler, Ulrich (Journal article; Peer reviewed, 2024)Introduction: Longitudinal studies with annual follow-up including psychological and social variables in substance use disorder recovery are scarce. We investigated whether levels of substance use, satisfaction with life, ... -
Is there an increase in duration of long-term sickness absence in Norway from 1994 to 2007? A registry based study
Hagen, Katrin Pedersen; Erga, Aleksander Hagen (Master thesis, 2012-04-15)Background: Sickness absence in Norway is high despite improvements in key indicators of public health. The pull and the push models attribute the high levels of sickness absence to choice vs. coercion, respectively. ... -
“A life more ordinary” Processes of 5-year recovery from substance abuse. Experiences of 30 recovered service users
Bjørnestad, Jone Ravndal; Svendsen, Thomas Solgård; Slyngstad, Tale Ekeroth; Erga, Aleksander Hagen; McKay, James R.; Nesvåg, Sverre Martin; Skaalevik, Alexander Waagan; Veseth, Marius; Moltu, Christian (Peer reviewed; Journal article, 2019-09-18)Background: Studies investigating the subjective experiences of long-term recovery from substance use disorder are scarce. Particularly, functional and social factors have received little attention. Objectives: To investigate ... -
One-year abstinence improves ADHD symptoms among patients with polysubstance use disorder
Hagen, Egon; Erga, Aleksander Hagen; Nesvåg, Sverre; McKay, James R.; Lundervold, Astri; Walderhaug, Espen (Peer reviewed; Journal article, 2017-12)Introduction Attention-deficit/hyperactivity disorder (ADHD) is a common comorbid disorder in patients suffering from substance use disorder (SUD). Individuals with co-occurring SUD and ADHD are more likely than SUD patients ... -
One-year sobriety improves satisfaction with life, executive functions and psychological distress among patients with polysubstance use disorder
Hagen, Egon; Erga, Aleksander Hagen; Hagen, Katrin Pedersen; Nesvåg, Sverre; McKay, James R.; Astri, Lundervold; Walderhaug, Espen (Peer reviewed; Journal article, 2017-05)Introduction: Polysubstance use disorder is prevalent in treatment-seeking patients with substance use disorder (SUD), with a higher risk of developing comorbid psychiatric symptoms, more pervasive deficits in cognitive ... -
Patients with cognitive deficits and substance use disorders, a clinical population in need of focused attention
Erga, Aleksander Hagen; Hetland, Jens; Braatveit, Kirsten Johanne (Journal article; Peer reviewed, 2023-10-12) -
Performance on Cognitive Screening Tests and Long-Term Substance Use Outcomes in Patients with Polysubstance Use Disorder
Hetland, Jens; Hagen, Egon; Lundervold, Astri J.; Erga, Aleksander Hagen (Journal article; Peer reviewed, 2023)Introduction: Cognitive impairments among patients with substance use disorders are prevalent and associated with adverse treatment outcomes. However, knowledge of the predictive value of broad cognitive screening instruments ... -
Persistent sleep problems among people in recovery from substance use disorders: a mixed methods study
Erga, Aleksander Hagen; Nesvåg, Sverre Martin; Dahlberg, Ingrid Elin; McKay, James R. (Journal article; Peer reviewed, 2022)Background The aims of this study are to examine the one-year trajectory of sleep problems, identify clinical correlates, and describe subjective experiences related to persistent sleep problems during recovery from ... -
Personality and substance use disorder: Characteristics as measured by NEO-personality inventory–revised
Grude Fodstad, Elise Constance; Ushakova, Anastasia; Pallesen, Ståle; Hagen, Egon; Erga, Aleksander Hagen; Erevik, Eilin K. (Journal article; Peer reviewed, 2022-11-07)The present study investigates the personality characteristics of a cohort of patients with Substance Use Disorders. The included participants (n = 123) were recruited from specialized treatment for addictions in Norway. ... -
The Relationship Between Self-Reported Childhood Maltreatment and Mental Health in Substance Use Disorders: A 6-Year Retrospective Analysis
Erga, Aleksander Hagen; Ushakova, Anastasia; Elstad, Maria; Grude Fodstad, Elise Constance; Belfrage, Anna (Journal article; Peer reviewed, 2024)Objective This longitudinal cohort study aims to investigate the relationship between self-reported childhood maltreatment (CM) and the retrospective trajectory of substance use, mental health, and satisfaction with ... -
Securing Participant Engagement in Longitudinal Substance Use Disorder Recovery Research: A Qualitative Exploration of Key Retention Factors
Svendsen, Thomas Solgaard; Veseth, Marius; McKay, James R.; Bjornestad, Jone; Erga, Aleksander Hagen; Moltu, Christian; Nesvåg, Sverre (Journal article; Peer reviewed, 2021)The longitudinal cohort study is the gold standard in observational epidemiology. A central challenge with this design is the risk of attrition over time, especially in studies of inaccessible clinical populations, such ... -
Trajectories of psychological distress during recovery from polysubstance use disorder
Erga, Aleksander Hagen; Hønsi, Audhild; Anda-Ågotnes, Liss Gøril; Nesvåg, Sverre Martin; Hesse, Morten; Hagen, Egon (Journal article; Peer reviewed, 2021)Introduction: Polysubstance use is a prevalent substance use pattern with adverse effects on psychological distress and diminished treatment outcomes. Although polysubstance use often dominates clinical practice, the ... -
Traumatic experiences and PTSD symptoms in substance use disorder: A comparison of recovered versus current users
Belfrage, Anna; Njå, Anne-Lill Mjølhus; Grude Fodstad, Elise Constance; Lunde, Siri; Årstad, Janne; Lid, Torgeir Gilje; Erga, Aleksander Hagen (Journal article; Peer reviewed, 2023)Introduction: The aim of this study was to investigate the prevalence of traumatic experiences and symptoms of posttraumatic stress disorder (PTSD) in treatment-seeking individuals with ongoing substance use disorder (SUD) ...