• Betydning av tilbakemelding gitt ved avvikende CRP-verdi fra Tromsø 7. Kvalitetssikring av tilbakemeldingsprosedyrer ved Tromsøundersøkelsen 

      Nissen, Frida Igland (Master thesis; Mastergradsoppgave, 2017-09-08)
      Formål: Denne oppgaven er en del av en større undersøkelse der formålet er å bidra til kvalitetssikring av tilbakemeldingsrutinene til Tromsøundersøkelsen. Dette ved å undersøke hvilken betydning det har for deltakere i Tromsøundersøkelsen å få tilbakemelding om patologisk forhøyet CRP. Metode: Mixed-methods. Data fra spørreskjema ble analysert i den kvantitative delen av oppgaven. For kvalitativ ...
    • Cortical bone structure of the proximal femur and incident fractures 

      Nissen, Frida Igland; Andreasen, Camilla; Borgen, Tove Tveitan; Bjørnerem, Åshild Marit; Hansen, Ann Kristin (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-04)
      Purpose: Fracture risk is most frequently assessed using Dual X-ray absorptiometry to measure areal bone mineral density (aBMD) and using the Fracture Risk Assessment Tool (FRAX). However, these approaches have limitations and additional bone measurements may enhance the predictive ability of these existing tools. Increased cortical porosity has been associated with incident fracture in some ...
    • Epidemiology of forearm fractures in women and men in Norway 2008–2019 

      Andreasen, Camilla; Dahl, Cecilie; Solberg, Lene Bergendal; Borgen, Tove Tveitan; Wisløff, Torbjørn; Gjertsen, Jan-Erik; Figved, Wender; Stutzer, Jens-Meinhard; Nissen, Frida Igland; Nordsletten, Lars; Frihagen, Frede; Bjørnerem, Åshild Marit; Omsland, Tone Kristin (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-12)
      Summary - The purpose of this paper is to describe rates of forearm fractures in adults in Norway 2008–2019. Incidence rate of distal forearm fractures declined over time in both sexes. Forearm fracture constitute a significant health burden and prevention strategies are needed.<p> <p>Purpose - To assess age- and sex-specific incidence rates, and time trends for forearm fractures in Norway, and ...
    • Estimated Glomerular Filtration Rate (eGFR) based on cystatin C was associated with increased risk of hip and proximal humerus fractures in women and decreased risk of hip fracture in men, whereas eGFR based on creatinine was not associated with fracture risk in both sexes: The Tromsø Study 

      Nordvåg, Sofie; Solbu, Marit Dahl; Melsom, Toralf; Nissen, Frida Igland; Andreasen, Camilla; Borgen, Tove Tveitan; Eriksen, Bjørn Odvar; Joakimsen, Ragnar Martin; Bjørnerem, Åshild (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-14)
      <i>Purpose</i> - Patients with end-stage kidney disease have an increased fracture risk. Whether mild to moderate reductions in kidney function is associated with increased fracture risk is uncertain. Results from previous studies may be confounded by muscle mass because of the use of creatinine-based estimates of the glomerular filtration rate (eGFRcre). We tested the hypothesis that lower eGFR ...
    • Forearm fractures–are we counting them all? An attempt to identify and include the missing fractures treated in primary care 

      Dahl, Cecilie; Ohm, Eyvind; Solbakken, Siri Marie; Anwar, Nudrat; Holvik, Kristin; Madsen, Christian; Frihagen, Frede; Bjørnerem, Åshild Marit; Nissen, Frida Igland; Solberg, Lene Bergendal; Omsland, Tone Kristin (Journal article; Tidsskriftartikkel, 2023-07-07)
      Objective: Norway has a high incidence of forearm fractures, however, the incidence rates based on secondary care registers can be underestimated, as some fractures are treated exclusively in primary care. We estimated the proportion of forearm fracture diagnoses registered exclusively in primary care and assessed the agreement between diagnosis for forearm fractures in primary and secondary care. ...
    • Is There a Causal Relationship between Physical Activity and Bone Microarchitecture? A Study of Adult Female Twin Pairs 

      Nissen, Frida Igland; Esser, Vivienne F. C.; Bui, Minh; Li, Shuai; Hopper, John L.; Bjørnerem, Åshild Marit; Hansen, Ann Kristin (Journal article; Tidsskriftartikkel, 2023-05-17)
      The reasons for the association between physical activity (PA) and bone microarchitecture traits are unclear. We examined whether these associations were consistent with causation and/or with shared familial factors using a cross-sectional study of 47 dizygotic and 93 monozygotic female twin pairs aged 31–77 years. Images of the nondominant distal tibia were obtained using high-resolutionperipheral ...
    • Validation of forearm fracture diagnoses in administrative patient registers 

      Omsland, Tone Kristin; Solberg, Lene Bergendal; Bjørnerem, Åshild Marit; Borgen, Tove Tveitan; Andreasen, Camilla; Wisløff, Torbjørn; Hagen, Gunhild; Basso, Trude; Gjertsen, Jan-Erik; Apalset, Ellen Margrete; Figved, Wender; Stutzer, Jens-Meinhard; Nissen, Frida Igland; Hansen, Ann Kristin; Joakimsen, Ragnar Martin; Figari, Elisa; Peel, Geoffrey; Rashid, Ali A.; Khoshkhabari, Jashar; Eriksen, Erik Fink; Nordsletten, Lars; Frihagen, Frede; Dahl, Cecilie (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-24)
      Summary The validity of forearm fracture diagnoses recorded in fve Norwegian hospitals was investigated using image reports and medical records as gold standard. A relatively high completeness and correctness of the diagnoses was found. Algorithms used to defne forearm fractures in administrative data should depend on study purpose.<p> <p>Purpose In Norway, forearm fractures are routinely recorded ...
    • Validation of forearm fracture diagnoses in administrative patient registers 

      Omsland, Tone Kristin; Solberg, Lene Bergendal; Bjørnerem, Åshild Marit; Borgen, Tove Tveitan; Andreasen, Camilla; Wisløff, Torbjørn; Hagen, Gunhild; Basso, Trude; Gjertsen, Jan-Erik; Apalset, Ellen Margrete; Figved, Wender; Stutzer, Jens-Meinhard; Nissen, Frida Igland; Hansen, Ann Kristin; Joakimsen, Ragnar Martin; Figari, Elisa; Peel, Geoffrey; Rashid, Ali A.; Khoshkhabari, Jashar; Eriksen, Erik Fink; Nordsletten, Lars; Frihagen, Frede; Dahl, Cecilie (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-24)
      Summary The validity of forearm fracture diagnoses recorded in fve Norwegian hospitals was investigated using image reports and medical records as gold standard. A relatively high completeness and correctness of the diagnoses was found. Algorithms used to define forearm fractures in administrative data should depend on study purpose.<p> <p>Purpose In Norway, forearm fractures are routinely recorded ...