• Antibiotics for gastroenteritis in general practice and out-of-hours services in Norway 2006-15 

      Emberland, Knut Erik; Wensaas, Knut-Arne; Litleskare, Sverre; Larsen, Leo; Mørch, Kristine; Ruths, Sabine; Rørtveit, Guri (Peer reviewed; Journal article, 2021)
      Background When patients with gastroenteritis (GE) seek health care, they are generally managed in primary care. Little is known about the use of antibiotic treatment in these cases. Objective The aim of this study was to ...
    • Characteristics of hospitalized patients during a large waterborne outbreak of Campylobacter jejuni in Norway 

      Mortensen, Nicolay; Hanevik, Kurt; Langeland, Nina; Rørtveit, Guri; Wensaas, Knut-Arne; Jonasson, Solveig Aalstad; Lavesson, Ingrid Viola; Emberland, Knut Erik; Litleskare, Sverre (Journal article; Peer reviewed, 2021)
      Very few reports describe all hospitalized patients with campylobacteriosis in the setting of a single waterborne outbreak. This study describes the demographics, comorbidities, clinical features, microbiology, treatment ...
    • Clinical features of gastroenteritis during a large waterborne Campylobacter outbreak in Askøy, Norway 

      Emberland, Knut Erik; Wensaas, Knut-Arne; Litleskare, Sverre; Iversen, Arild; Hanevik, Kurt; Langeland, Nina; Rørtveit, Guri (Peer reviewed; Journal article, 2021)
      Purpose Outbreaks of Campylobacter infection are common, but studies exploring the clinical features of acute illness in the outbreak setting are scarce in existing literature. The main purpose of the present study was to ...
    • Colorectal cancer screening with repeated fecal immunochemical test versus sigmoidoscopy: baseline results from a randomized trial 

      Randel, Kristin Ranheim; Schult, Anna Lisa; Botteri, Edoardo; Hoff, Geir; Bretthauer, Michael; Ursin, Giske; Natvig, Erik; Berstad, Paula; Jørgensen, Anita; Sandvei, Per Kristian; Olsen, Marie Kristin Ek; Frigstad, Svein Oskar; Darre-Næss, Ole; Norvard, Espen R.; Bolstad, Nils; Kørner, Hartwig; Wibe, Arne; Wensaas, Knut-Arne; de Lange, Thomas; Holme, Øyvind (Peer reviewed; Journal article, 2020)
      Background and aims: The comparative effectiveness of sigmoidoscopy and fecal immunochemical testing (FIT) for colorectal cancer (CRC) screening is unknown. Methods: Individuals aged 50-74 years living in South-East Norway ...
    • Consultations and antibiotic treatment for urinary tract infections in Norwegian primary care 2006–2015, a registry-based study 

      Haugom, Lars; Ruths, Sabine; Emberland, Knut Erik; Eliassen, Knut Eirik Ringheim; Rørtveit, Guri; Wensaas, Knut-Arne (Peer reviewed; Journal article, 2021)
      Background Extensive use of antibiotics and the resulting emergence of antimicrobial resistance is a major health concern globally. In Norway, 82% of antibiotics is prescribed in primary care and one in four prescriptions ...
    • Diverticular Disease in the Primary Care Setting 

      Wensaas, Knut-Arne; Hungin, Amrit Pali (Journal article; Peer reviewed, 2016)
      Diverticular disease is a chronic and common condition, and yet the impact of diverticular disease in primary care is largely unknown. The diagnosis of diverticular disease relies on the demonstration of diverticula in the ...
    • Long COVID and post-infective fatigue syndrome: A review 

      Sandler, Carolina X; Wyller, Vegard B. B; Moss-Morris, Rona; Buchwald, Dedra; Crawley, Esther; Hautvast, Jeannine; Katz, Ben Z; Knoop, Hans; Little, Paul; Taylor, Renee; Wensaas, Knut-Arne; Lloyd, Andrew R (Journal article; Peer reviewed, 2021)
      Fatigue is a dominant feature of both acute and convalescent coronavirus disease 2019 (COVID-19) (sometimes termed “long-COVID”), with up to 46% of patients reporting fatigue that lasts from weeks to months. The investigators ...
    • Phenotyping of subjects for large scale studies on patients with IBS 

      Boeckxstaens, Guy E.; Drug, Vasile; Dumitraşcu, Dan Lucian; Farmer, Adam Donald; Hammer, Johann; Hausken, Trygve; Niesler, Beate; Pohl, Daniel; Pojskic, Lejla; Polster, Annikka V; Simrén, Magnus; Goebel-Stengel, Miriam; Van Oudenhove, Lukas; Vassallo, Mario; Wensaas, Knut-Arne; Aziz, Qasim; Houghton, Lesley Anne (Journal article; Peer reviewed, 2016)
      Background: Irritable bowel syndrome (IBS) is a complex condition with multiple factors contributing to its aetiology and pathophysiology. Aetiologically these include genetics, life-time events and environment, and ...
    • Prevalence of fibromyalgia 10 years after infection with Giardia lamblia: A controlled prospective cohort study 

      Hunskår, Gunnhild Sellevoll; Rørtveit, Guri; Litleskare, Sverre; Eide, Geir Egil; Hanevik, Kurt; Langeland, Nina; Wensaas, Knut-Arne (Peer reviewed; Journal article, 2021)
      Objectives To investigate whether acute infection with Giardia lamblia is associated with fibromyalgia 10 years after infection and whether fibromyalgia is associated with irritable bowel syndrome (IBS) and chronic fatigue ...
    • Quality of life and its association with irritable bowel syndrome and fatigue ten years after giardiasis 

      Litleskare, Sverre; Rørtveit, Guri; Eide, Geir Egil; Emberland, Knut Erik; Hanevik, Kurt; Langeland, Nina; Wensaas, Knut-Arne (Peer reviewed; Journal article, 2019)
      Background Gastroenteritis has been associated with complications such as irritable bowel syndrome (IBS) and chronic fatigue (CF). Little is known about the implications for quality of life (QoL) in this setting. The aims ...
    • Rastløse bein – en studie fra allmennpraksis 

      Bjorvatn, Bjørn; Wensaas, Knut-Arne; Emberland, Knut Erik; Fadnes, Lars Thore; Litleskare, Sverre; Perez, Esperanza Diaz; Ruths, Sabine; Rørtveit, Guri; Waage, Siri (Peer reviewed; Journal article, 2021)
      BAKGRUNN Forekomsten av rastløse bein er rundt 5–10 % blant voksne i den generelle befolkningen. Få studier er gjort om forekomsten blant pasienter som oppsøker fastlege. Det er også få studier om sammenheng med andre ...