• Adherence to prescription guidelines and achievement of treatment goals among persons with coronary heart disease in Tromsø 7 

      Pedersen, Elisabeth; Garcia, Beate Hennie; Halvorsen, Kjell H.; Eggen, Anne Elise; Schirmer, Henrik; Waaseth, Marit (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-21)
      Background - Adherence to clinical practice guidelines for coronary heart disease (CHD) reduces morbidity, mortality and treatment costs. We aimed to describe and compare adherence to prescription guidelines for persons with CHD, and explore its association with treatment goal achievement.<p> <p>Method - We included all participants reporting myocardial infarction, angina, percutaneous coronary ...
    • Ageing and mental health: Changes in self-reported health due to physical illness and mental health status with consecutive cross-sectional analyses 

      Lorem, Geir F; Schirmer, Henrik; Wang, Catharina Elisabeth Arfwedson; Emaus, Nina (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-18)
      Objectives: It is known that self-reported health (SRH) declines with increasing age and that comorbidity increases with age. We wished to examine how age transfers its effect to SRH through comorbid disease and mental illness and whether these processes remained stable from 1994 until 2008. The hypothesis is that ageing and/or the increased age-related burden of pathology explains the declining ...
    • Algorithm for predicting valvular heart disease from heart sounds in an unselected cohort 

      Waaler, Per Niklas Benzler; Melbye, Hasse; Schirmer, Henrik; Johnsen, Markus Kreutzer; Dønnem, Tom; Ravn, Johan Fredrik; Andersen, Stian; Davidsen, Anne Herefoss; Aviles Solis, Juan Carlos; Stylidis, Michael; Bongo, Lars Ailo Aslaksen (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-01-24)
      Objective: This study aims to assess the ability of state-of-the-art machine learning algorithms to detect valvular heart disease (VHD) from digital heart sound recordings in a general population that includes asymptomatic cases and intermediate stages of disease progression.<p> <p>Methods: We trained a recurrent neural network to predict murmurs from heart sound audio using annotated recordings ...
    • The art of yoik in care: Sami caregivers' experiences in dementia in Northern Norway 

      Hämäläinen, Soile; Musial, Frauke; Graff, Ola; Schirmer, Henrik; Salamonsen, Anita; Mehus, Grete (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-26)
      <i>Purpose</i>: Yoik is the traditional vocal art of the Sami, the indigenous people of Fennoscandia. The Sami people, their land and their culture have been subject to colonisation and assimilation for centuries, hence the practice of yoik was lost in many regions. Despite an increasing awareness of the benefits of health musicking, yoik is only sporadically included in musicking practices in ...
    • Assessment of mental health trajectories before and after myocardial infarction, atrial fibrillation or stroke: analysis of a cohort study in Tromsø, Norway (Tromsø Study, 1994-2016) 

      Lorem, Geir F; Opdal, Ida Marie; Wilsgaard, Tom; Schirmer, Henrik; Løchen, Maja-Lisa; Olsen, Ingrid Petrikke; Steigen, Terje; Rognmo, Kamilla (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-01)
      Objectives - The increased survival rate of cardiovascular disease (CVD) implies a higher proportion of individuals who live with CVD. Using data from the Tromsø Study, we aimed to investigate mental health symptom trajectories before and after myocardial infarction, atrial fibrillation or stroke in a general population and to explore factors that contribute to the association.<p> <p>Design - ...
    • Association between diastolic dysfunction and future atrial fibrillation in the Tromsø Study from 1994 to 2010 

      Tiwari, Sweta; Schirmer, Henrik; Jacobsen, Bjarne K.; Hopstock, Laila Arnesdatter; Nyrnes, Audhild; Heggelund, Geir; Njølstad, Inger; Mathiesen, Ellisiv B.; Løchen, Maja-Lisa (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-05-13)
      Objective. To investigate the association between echocardiographic measurements with emphasis on diastolic dysfunction and risk of atrial fibrillation (AF) in a population-based cohort study. Methods. We followed 2406 participants from the Tromsø Study from 1994 to 2010. Left atrial (LA) size and mitral Doppler indices as measured by echocardiography were used for evaluating diastolic dysfunction. ...
    • The association of grip strength from midlife onwards with all-cause and cause-specific mortality over 17 years of follow-up in the Tromsø Study 

      Strand, Bjørn Heine; Cooper, Rachel; Bergland, Astrid; Jørgensen, Lone; Schirmer, Henrik; Skirbekk, Vegard; Emaus, Nina (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-08-25)
      <b>Background</b> Grip strength has consistently been found to predict all-cause mortality rates. However, few studies have examined cause-speci fi c mortality or tested age differences in these associations. <b>Methods</b> In 1994, grip strength was measured in the population-based Tromsø Study, covering the ages 50 – 80 years (N=6850). Grip strength was categorised into fi fths, and ...
    • Association of occasional smoking with total mortality in the population-based Tromsø study, 2001-2015 

      Løchen, Maja-Lisa; Gram, Inger Torhild; Mannsverk, Jan T.; Mathiesen, Ellisiv B.; Njølstad, Inger; Schirmer, Henrik; Wilsgaard, Tom; Jacobsen, Bjarne K. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-28)
      Objectives: <br> There is a shift in the smoking population from daily smokers to light or occasional smokers. The knowledge about possible adverse health effects of this new smoking pattern is limited. We investigated smoking habits with focus on occasional smoking in relation to total mortality in a follow-up study of a Norwegian general population. <br> Setting: <br> A population study ...
    • Associations between physical activity, left atrial size and incident atrial fibrillation: the Tromsø Study 1994–2016 

      Heitmann, Kim Arne; Løchen, Maja-Lisa; Stylidis, Michael; Hopstock, Laila Arnesdatter; Schirmer, Henrik; Morseth, Bente (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-24)
      Aims: Left atrial (LA) enlargement is an independent risk factor for atrial fibrillation (AF). Interestingly, some athletes have increased risk of AF, which may be linked to LA enlargement; however, little is known about the relationship between LA enlargement and AF risk at moderate-level physical activity (PA). We aimed to explore the associations between PA, LA size and risk of incident ...
    • Associations of inner retinal layers with risk of incident dementia: An individual participant data analysis of four prospective cohort studies 

      van der Heide, Frank C. T.; Khawaja, Anthony; Berendschot, Tos T. J. M.; Littlejohns, Thomas J.; Kuźma, Elżbieta; Luben, Robert; Patel, Praveen J.; Foster, Paul J.; Bertelsen, Geir; von Hanno, Therese; Johnsen, Bente; Schirmer, Henrik; Rebouças, Sara C. L.; Grasset, Leslie; Delcourt, Cécile; Helmer, Catherine; Stehouwer, Coen D. A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-08)
      INTRODUCTION - Our main objective was to investigate whether retinal neurodegeneration, estimated from lower thickness of inner retinal layers, was associated with incident all-cause dementia and Alzheimer's disease (AD).<p> <p>METHODS - We performed an individual participant data meta-analysis using unpublished data from four prospective cohort studies with a total of 69,955 participants (n = ...
    • Atrial fibrillation is associated with cognitive decline in stroke-free subjects: the Tromsø Study 

      Tiwari, Sweta; Løchen, Maja-Lisa; Jacobsen, Bjarne K.; Hopstock, Laila Arnesdatter; Nyrnes, Audhild; Njølstad, Inger; Mathiesen, Ellisiv B.; Arntzen, Kjell Arne; Ball, Jocasta; Stewart, Simon; Wilsgaard, Tom; Schirmer, Henrik (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-09-28)
      Background and purpose:<br>Previous studies have shown associations between atrial fibrillation (AF) and cognitive decline. We investigated this association in a prospective population study, focusing on whether stroke risk factors modulated this association in stroke-free women and men.<br>Methods:<br>We included 4983 participants (57% women) from the fifth survey of the Tromsø Study (Tromsø 5, ...
    • BEtablocker Treatment After acute Myocardial Infarction in revascularized patients without reduced left ventricular ejection fraction (BETAMI): Rationale and design of a prospective, randomized, open, blinded end point study 

      Munkhaugen, John; Ruddox, Vidar; Halvorsen, Sigrun; Dammen, Toril; Fagerland, Morten; Hernæs, Kjersti Helene; Vethe, Nils Tore; Prescott, Eva; Jensen, Svend Eggert; Rødevand, Olaf; Jortveit, Jarle; Bendz, Bjørn; Schirmer, Henrik; Kõber, Lars; Botker, Hans Erik; Larsen, Alf Inge; Vikenes, Kjell; Steigen, Terje; Wiseth, Rune; Pedersen, Terje Rolf; Edvardsen, Thor; Otterstad, Jan Erik; Atar, Dan (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-25)
      <p><i>Background - </i>Current guidelines on the use of β-blockers in post–acute myocardial infarction (MI) patients without reduced left ventricular ejection fraction (LVEF) are based on studies before the implementation of modern reperfusion and secondary prevention therapies. It remains unknown whether β-blockers will reduce mortality and recurrent MI in contemporary revascularized post-MI patients ...
    • Cardiac troponin I and T for ruling out coronary artery disease in suspected chronic coronary syndrome 

      Tveit, Sjur Hansen; Myhre, Peder Langeland; Hanssen, Tove Aminda; Forsdahl, Signe Helene; Iqbal, Amjid; Omland, Torbjørn; Schirmer, Henrik (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-18)
      To compare the performance of high-sensitivity cardiac troponin I and T (hs-cTnI; hs-cTnT) in diagnosing obstructive coronary artery disease (CAD<sub>50</sub>) in patients with suspected chronic coronary syndrome (CCS). A total of 706 patients with suspected CCS, referred for Coronary Computed Tomography Angiography, were included. cTn concentrations were measured using the Singulex hs-cTnI ...
    • CHA2DS2-VASc score, left atrial size and atrial fibrillation as stroke risk factors in the Tromsø Study 

      Tiwari, Sweta; Løchen, Maja-Lisa; Jacobsen, Bjarne K.; Hopstock, Laila Arnesdatter; Nyrnes, Audhild; Njølstad, Inger; Mathiesen, Ellisiv B.; Schirmer, Henrik (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-01)
      Objective:<br> CHA2DS2-VASc score, left atrial (LA) size and atrial fibrillation (AF) have individually been associated with stroke risk. Our aim was to investigate the predictive ability of combinations of these factors for the odds of incident stroke in a population-based cohort study.<br> Methods:<br> We followed 2844 participants from the Tromsø Study from 1994 to 2012. Information on LA size ...
    • Changes in self-reported health trajectories with focus on ageing in the Tromsø study 

      Lorem, Geir F; Schirmer, Henrik; Emaus, Nina (Conference object; Konferansebidrag, 2016)
      Aim: We aim to describe factors that affect self-reported health (SRH) and to describe differences in trajectories in an ageing cohort according to comorbid diseases, mental health, physical condition, education, and physical activity. Methods: Prospective cohort study of a general population in Norway utilizing repeated surveys and physical examinations (1986-2008). We included 16 745 men and ...
    • Clinical and echocardiographic parameters predicting 1- and 2-year mortality after transcatheter aortic valve implantation 

      Kjønås, Didrik; Schirmer, Henrik; Aakhus, Svend; Eidet, Jo; Malm, Siri; Aaberge, Lars; Busund, Rolf; Røsner, Assami (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-06)
      <p><i>Background:</i> Transcatheter aortic valve implantation (TAVI) has become a standard treatment option for patients with symptomatic aortic stenosis. Elderly high-risk patients treated with TAVI have a high residual mortality due to preexisting comorbidities. Knowledge of factors predicting futility after TAVI is sparse and clinical tools to aid the preoperative evaluation are lacking. The aim ...
    • Cross-sectional associations between accelerometry-measured physical activity, left atrial size, and indices of left ventricular diastolic dysfunction: The Tromsø Study 

      Heitmann, Kim Arne; Løchen, Maja-Lisa; Hopstock, Laila Arnesdatter; Stylidis, Michael; Welde, Boye; Schirmer, Henrik; Morseth, Bente (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-31)
      Whereas left atrial (LA) enlargement is an independent predictor for adverse cardiovascular events and all-cause mortality, this is regarded a physiological adaption of exercise. Paradoxically, LA size in athletes may overlap the enlargement observed in patients with cardiac pathology. Current knowledge is mainly derived from studies of athletes, and little is known about cardiac adaptations to ...
    • The DBP Phenotype Gc-1f/Gc-1f is associated with reduced risk of cancer. The Tromsø Study 

      Jorde, Rolf; Schirmer, Henrik; Wilsgaard, Tom; Mathiesen, Ellisiv B.; Løchen, Maja-Lisa; Joakimsen, Ragnar Martin; Grimnes, Guri (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-05-18)
      Background and Objective In addition to its role as a transport protein, the vitamin D binding protein (DBP) may also affect lipid metabolism, inflammation and carcinogenesis. There are three common variants of the DBP, Gc1s (1s), Gc1f (1f), Gc2 (2) that result in six common phenotypes (1s/1s, 1s/ 1f, 1s/2, 1f/1f, 1f/2, and 2/2). These phenotypes can be identified by genotyping for the two single ...
    • Diagnostic accuracy of heart auscultation for detecting valve disease: a systematic review 

      Davidsen, Anne Herefoss; Andersen, Stian; Halvorsen, Peder Andreas; Schirmer, Henrik; Reierth, Eirik; Melbye, Hasse (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-24)
      Objective The objective of this study was to determine the diagnostic accuracy in detecting valvular heart disease (VHD) by heart auscultation, performed by medical doctors.<p> <p>Design/methods A systematic literature search for diagnostic studies comparing heart auscultation to echocardiography or angiography, to evaluate VHD in adults, was performed in MEDLINE (1947–November 2021) and ...
    • Do More Recent Born Generations of Older Adults Have Stronger Grip? A Comparison of Three Cohorts of 66- to 84-Year-Olds in the Tromsø Study 

      Strand, Bjørn Heine; Bergland, Astrid; Jørgensen, Lone; Schirmer, Henrik; Emaus, Nina; Cooper, Rachel (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-11)
      <p><i>Background</i>: Evidence pertaining to whether more recent born generations of adults reaching old age have better physical capability than previous generations is scarce and inconclusive. We aimed to investigate birth cohort differences in grip strength.</p> <p><i>Methods</i>: The study comprised 5,595 individuals from the Tromsø study waves in 1994/1995, 2007/2008, and 2015/2016. Grip ...