Browsing NTNU Open by Author "Karlstad, Øystein"
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Comparative effectiveness of warfarin, dabigatran, rivaroxaban and apixaban in nonvalvular atrial fibrillation: A nationwide pharmacoepidemiological study
Kjerpeseth, Lars Jøran; Selmer, Randi Marie; Ariansen, Inger; Karlstad, Øystein; Ellekjær, Hanne; Skovlund, Eva (Journal article; Peer reviewed, 2019)Objective: To compare effectiveness and safety of warfarin and the direct oral anticoagulants (DOAC) dabigatran, rivaroxaban and apixaban in non-valvular atrial fibrillation in routine care. Methods: From nationwide ... -
Contribution of an extensive medication-based comorbidity index (Rx-Risk) in explaining the excess mortality after hip fracture in older Norwegians: a NOREPOS cohort study
Holvik, Kristin; Hjellvik, Vidar; Karlstad, Øystein; Gunnes, Nina; Hoff, Mari; Tell, Grethe Seppola; Meyer, Haakon Eduard (Journal article; Peer reviewed, 2022)Objectives: Patients with hip fracture are typically characterised by extensive comorbidities and excess mortality. Methods that account for a wide range of comorbidities are needed when attempting to identify causal ... -
Is the Disease Burden from COPD in Norway Falling off? A Study of Time Trends in Three Different Data Sources
Melbye, Hasse; Helgeland, Jon; Karlstad, Øystein; Ariansen, Inger; Langhammer, Arnulf; Wisløff, Torbjørn; Nafstad, Per; Nystad, Wenche (Peer reviewed; Journal article, 2020)Background: Less smoking should lead to fewer COPD cases. We aimed at estimating time trends in the prevalence and burden of COPD in Norway from 2001 to 2017. Methods: We used pre-bronchodilator spirometry and other health ... -
National health registries – a ‘goldmine’ for studying non-communicable disease occurrence in Norway – the NCDNOR project
Nystad, Wenche; Hjellvik, Vidar; Larsen, Inger Kristin; Robsahm, Trude Eid; Sund, Erik Reidar; Krokstad, Steinar; Hopstock, Laila Arnesdatter; Grimsgaard, Anne Sameline; Langhammer, Arnulf; Bramness, Jørgen Gustav; Wisløff, Torbjørn; Lergenmuller, Simon; Dalene, Knut Eirik; Meyer, Haakon Eduard; Holvik, Kristin; Helgeland, Jon; Karlstad, Øystein; Ariansen, Inger (Peer reviewed; Journal article, 2023)To estimate occurrence of non-communicable diseases (NCDs) over the life-course in the Norwegian population, national health registries are a vital source of information since they fully represent the entire non-institutionalised ...