Blar i forfatter "Joakimsen, Ragnar Martin"

Viser treff 21-27 av 27

    • Polymorphisms Related to the Serum 25-Hydroxyvitamin D Level and Risk of Myocardial Infarction, Diabetes, Cancer and Mortality. The Tromsø Study 

      Jorde, Rolf; Schirmer, Henrik; Wilsgaard, Tom; Joakimsen, Ragnar Martin; Mathiesen, Ellisiv B.; Njølstad, Inger; Løchen, Maja-Lisa; Figenschau, Yngve; Berg, Jens Petter; Svartberg, Johan; Grimnes, Guri (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      Low serum 25(OH)D levels are associated with cardiovascular risk factors, and also predict future myocardial infarction (MI), type 2 diabetes (T2DM), cancer and all-cause mortality. Recently several single nucleotide polymorphisms (SNPs) associated with serum 25-hydroxyvitamin D (25(OH)D) level have been identified. If these relations are causal one would expect a similar association between these ...

    • Serum parathyroid hormone is associated with increased cortical porosity of the inner transitional zone at the proximal femur in postmenopausal women: the Tromsø Study 

      Osima, Marit; Borgen, Tove Tveitan; Lukic, Marko; Grimnes, Guri; Joakimsen, Ragnar Martin; Eriksen, Erik Fink; Bjørnerem, Åshild (Journal article; Tidsskriftartikkel, 2017-11-14)
      Summary:<br> Serum parathyroid hormone (PTH) was associated with increased bone turnover markers and cortical porosity of the inner transitional zone at the proximal femur. These results suggest that PTH through increased intracortical bone turnover leads to trabecularisation of inner cortical bone in postmenopausal women. <p> Introduction: <br> Vitamin D deficiency leads to secondary ...

    • The Tromsø study : risk factors for non-vertebral fractures in a middle-aged population 

      Joakimsen, Ragnar Martin (Doctoral thesis; Doktorgradsavhandling, 1999)

    • 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 ...

    • Vitamin D and mortality: Individual participant data meta-analysis of standardized 25-hydroxyvitamin D in 26916 individuals from a European consortium 

      Gaksch, Martin; Jorde, Rolf; Grimnes, Guri; Joakimsen, Ragnar Martin; Schirmer, Henrik; Wilsgaard, Tom; Mathiesen, Ellisiv B.; Njølstad, Inger; Løchen, Maja-Lisa; März, Winfried; Kleber, Marcus E.; Tomaschitz, Andreas; Grübler, Martin; Eiriksdottir, Gudny; Gudmundsson, Elias F.; Harris, Tamara B.; Cotch, Mary Frances; Aspelund, Thor; Gudnason, Vilmundur; Rutters, Femke; Beulens, Joline W.J.; Van't Riet, Esther; Nijpels, Giel; Dekker, Jacqueline M.; Grove-Laugesen, Diana; Rejnmark, Lars; Busch, Markus A.; Mensink, Gert B.M.; Scheidt-Nave, Christa; Thamm, Michael; Swart, Karin M.A.; Brouwer, Ingeborg A.; Lips, Paul; Van Schoor, Natasja M.; Sempos, Christopher T.; Durazo-Arvizu, Ramón A.; Škrabáková, Zuzana; Dowling, Kirsten G.; Cashman, Kevin D.; Kiely, Mairead; Pilz, Stefan (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-16)
      Background:<br>Vitamin D deficiency may be a risk factor for mortality but previous meta-analyses lacked standardization of laboratory methods for 25-hydroxyvitamin D (25[OH]D) concentrations and used aggregate data instead of individual participant data (IPD). We therefore performed an IPD meta-analysis on the association between standardized serum 25(OH)D and mortality.<br>Methods:<br>In a European ...

    • Women with type 2 diabetes mellitus have lower cortical porosity of the proximal femoral shaft using low-resolution CT than nondiabetic women, and increasing glucose is associated with reduced cortical porosity 

      Osima, Marit; Kral, Rita; Borgen, Tove Tveitan; Høgestøl, Ingvild Kristine; Joakimsen, Ragnar Martin; Eriksen, Erik Fink; Bjørnerem, Åshild (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-01)
      <p>Increased cortical porosity has been suggested as a possible factor increasing fracture propensity in patients with type 2 diabetes mellitus (T2DM). This is a paradox because cortical porosity is generally associated with high bone turnover, while bone turnover is reduced in patients with T2DM. We therefore wanted to test the hypothesis that women with T2DM have lower bone turnover markers (BTM) ...