Now showing items 1-20 of 25

    • Adherence to the Healthy Nordic Food Index in the Norwegian Women and Cancer (NOWAC) cohort 

      Enget, Torill; Braaten, Tonje; Jacobsen, Bjarne K.; Barnung, Runa Borgund; Olsen, Anja; Skeie, Guri (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-12)
      <p><i>Background</i>: High adherence to the Healthy Nordic Food Index has been associated with better health outcomes, but the results have not been consistent. The association between high adherence and higher intake of energy and healthy and less healthy foods has been persistent across countries, highlighting the need to examine potential confounding by energy intake.</p> <p><i>Objective</i>: ...
    • 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. ...
    • 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 ...
    • 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, ...
    • 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 conventional cardiovascular risk factors and the estimated 10-year risk of acute myocardial infarction or cerebral stroke in Sami and non-Sami populations in two population-based cross-sectional surveys: The SAMINOR Study 

      Siri, Susanna Ragnhild; Eliassen, Bent Martin; Jacobsen, Bjarne K.; Melhus, Marita; Broderstad, Ann Ragnhild; Michalsen, Vilde Lehne; Braaten, Tonje (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-19)
      <p><i>Objective - </i>To describe changes in cardiovascular risk factors and in the estimated 10-year risk of acute myocardial infarction (AMI) or cerebral stroke (CS) between SAMINOR 1 (2003–2004) and SAMINOR 2 (2012–2014), and explore if these changes differed between Sami and non-Sami. <p><i>Design - </i>Two cross-sectional surveys. <p><i>Setting - </i>Inhabitants of rural Northern Norway. < ...
    • Changes in waist circumference and the prevalence of abdominal obesity during 1994-2008 - cross-sectional and longitudinal results from two surveys: the Tromsø Study 

      Jacobsen, Bjarne K.; Aars, Nils Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-21)
      <b>Background:</b> Abdominal obesity increases all-cause mortality and is a risk factor for a number of diseases. There are few population-based studies of the longitudinal changes of abdominal obesity.<br> <b>Methods:</b> Based on data from the Tromsø Study, we studied gender- and age-specific mean waist circumference and prevalence of abdominal overweight and abdominal obesity in two surveys ...
    • A comprehensive assessment of fish and other seafood in the Norwegian diet 

      Alexander, Jan; Frøyland, Livar; Hemre, Gro Ingunn; Jacobsen, Bjarne K.; Lund, Eiliv; Meltzer, Helle Margrete; Skåre, Janneche Utne (Research report; Forskningsrapport, 2006-03-27)
      At the request of the Norwegian Food Safety Authority, the Norwegian Scientific Committee for Food Safety (VKM) has conducted an assessment of the nutritional benefits of consuming fish and other seafood, compared with the health risks associated with the intake of contaminants and other undesirable compounds that fish and other seafood may contain.
    • Dietary intake of marine n-3 polyunsaturated fatty acids and future risk of venous thromboembolism 

      Isaksen, Trond; Evensen, Line Holtet; Johnsen, Stein Harald; Jacobsen, Bjarne K.; Hindberg, Kristian; Brækkan, Sigrid Kufaas; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-13)
      <p><i>Background</i>: Studies on the association between long‐chained n‐3 polyunsaturated fatty acids (n‐3 PUFAs) and risk of venous thromboembolism (VTE) are conflicting, potentially due to challenges related to assessment of n‐3 PUFA intake and changes in diet during follow‐up.</p> <p><i>Objectives</i>: To investigate whether dietary intake of marine n‐3 PUFAs was associated with risk of incident ...
    • Distribution of risk factors for cardiovascular disease and the estimated 10-year risk of acute myocardial infarction or cerebral stroke in Sami and non-Sami populations: The SAMINOR 2 Clinical Survey. 

      Siri, Susanna Ragnhild; Braaten, Tonje; Jacobsen, Bjarne K.; Melhus, Marita; Eliassen, Bent-Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-27)
      <p><i>Objective</i>: This study aimed to assess and compare the distribution of cardiovascular risk factors and the estimated 10-year risk of fatal or non-fatal acute myocardial infarction (AMI) or cerebral stroke (CS) among the Sami and non-Sami populations of Northern Norway.</p> <p><i>Methods</i>: The SAMINOR 2 Clinical Survey is a cross-sectional survey conducted in 10 municipalities in the ...
    • Fish consumption, fish oil supplements and risk of atherosclerosis in the Tromsø study 

      Johnsen, Stein Harald; Jacobsen, Bjarne K.; Brækkan, Sigrid Kufaas; Hansen, John-Bjarne; Mathiesen, Ellisiv B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-25)
      Background: <br>Whether long-chain n–3 PUFAs of marine origin have an anti-atherogenic effect in the general population has hardly been studied. In this population-based study, we hypothesized that fatty fish and fish oil intake protect against development of novel atherosclerotic plaques and is associated with reduced plaque size.<br> Methods: <br>We obtained questionnaire-based information ...
    • The impact of changes in leisure time physical activity on changes in cardiovascular risk factors: results from The Finnmark 3 Study and SAMINOR 1, 1987–2003 

      Hermansen, Rune Hermann; Broderstad, Ann Ragnhild; Jacobsen, Bjarne K.; Mähönen, Markku Samuel; Wilsgaard, Tom; Morseth, Bente (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-15)
      Objective: <br>The aim of this study was to examine the associations between changes in leisure time physical activity and changes in cardiovascular risk factors over 16 years and whether they differ between two ethnic groups in Norway. <br>Methods: <br>Data were extracted from two population-based studies. Altogether, 3671 men and women participated in both surveys, and 30% reported being of ...
    • Infant mortality and epidemic diseases. Wartime Finnmark in a comparative perspective 

      Mølmann, Nina Planting; Jacobsen, Bjarne K.; Elstad, Ingunn (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-12-15)
      The effects of war on the health of the population have never been systematically studied. The article explores the impact of war on the general health condition of Finnmark’s population during the war years. The indicators chosen are infant mortality and the epidemic diseases diphtheria, scabies and acute gastroenteritis. The development of the indicators in Finnmark is compared with the averages ...
    • Is age at menarche associated with total mortality? The Tromsø Study 

      Lundblad, Marie Wasmuth; Jacobsen, Bjarne K. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-01)
      <p><i>Purpose</i>: Early age at menarche (AAM) has been associated with increased mortality and morbidity, including premature death from all causes, breast cancer and cardiovascular diseases. The aim of this study was to examine the association between AAM and all-cause mortality.</p> <p><i>Subjects and methods</i>: A total of 12,409 women aged 25–94 years who took part in the fourth Tromsø Study ...
    • Leisure time and occupational physical activity, resting heart rate, and mortality in the Arctic region of Norway: The Finnmark Study 

      Hermansen, Rune Hermann; Jacobsen, Bjarne K.; Løchen, Maja-Lisa; Morseth, Bente (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-20)
      <p><i>Aims - </i>This study examined the association of leisure time physical activity, occupational physical activity, and resting heart rate with all-cause and cardiovascular disease mortality in Sami and non-Sami populations. <p><i>Study design - </i>This was a longitudinal, observational population-based study. <p><i>Methods - </i>The Finnmark 3 study cohort was examined in 1987–1988 and ...
    • Longitudinal and secular trends in total cholesterol levels and impact of lipid-lowering drug use among Norwegian women and men born in 1905–1977 in the population-based Tromsø Study 1979–2016 

      Hopstock, Laila Arnesdatter; Bønaa, Kaare; Eggen, Anne Elise; Grimsgaard, Sameline; Jacobsen, Bjarne K.; Løchen, Maja-Lisa; Mathiesen, Ellisiv B.; Njølstad, Inger; Wilsgaard, Tom (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-21)
      Objectives: <br> Elevated blood cholesterol is a modifiable risk factor for cardiovascular disease. Cholesterol level surveillance is necessary to study population disease burden, consider priorities for prevention and intervention and understand the effect of diet, lifestyle and treatment. Previous studies show a cholesterol decline in recent decades but lack data to follow individuals born ...
    • Longitudinal changes in desired body weight compared to changes in body weight: evidence of adaptation to weight gain? 

      Aars, Nils Abel; Jacobsen, Bjarne K. (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-21)
      <b>Background: </b>Overweight individuals desire a lower weight than they actually have. Little is known on the extent to which this discrepancy is reduced over time due to adaptation or resignation. The aim of this study is to describe cross-sectional relationships and longitudinal changes in desired body weight and differences between actual and desired body weight according to gender, age and ...
    • Major postoperative complications are associated with impaired long-term survival after gastro-esophageal and pancreatic cancer surgery: a complete national cohort study 

      Aahlin, Eirik Kjus; Olsen, Frank; Uleberg, Bård; Jacobsen, Bjarne K.; Lassen, Kristoffer (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05-18)
      Background: Some studies have reported an association between complications and impaired long-term survival after cancer surgery. We aimed to investigate how major complications are associated with overall survival after gastro-esophageal and pancreatic cancer surgery in a complete national cohort. <br> Methods: All esophageal-, gastric- and pancreatic resections performed for cancer in Norway ...
    • Physical activity, resting heart rate, and atrial fibrillation: the Tromsø Study 

      Morseth, Bente; Graff-Iversen, Sidsel; Jacobsen, Bjarne K.; Jørgensen, Lone; Nyrnes, Audhild; Thelle, Dag Steinar; Vestergaard, Peter; Løchen, Maja-Lisa (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-03-10)
      Aims: The objective was to examine the association of physical activity and resting heart rate (RHR) with hospital-diagnosed atrial fibrillation (AF) in a Norwegian cohort. <p> Methods and Results: This prospective study included 20 484 adults (50.3% men) who participated in the third Tromsø Study survey in 1986-1987. At baseline, physical activity was assessed by a validated questionnaire, and ...
    • The reproducibility of self-reported age at menarche: The Tromsø Study 

      Lundblad, Marie Wasmuth; Jacobsen, Bjarne K. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-22)
      Background: Previous studies of the reproducibility of self-reported age at menarche have been limited because of small study samples, short follow-up and the limited age span of the women included. Methods: The present study assessed the reproducibility of age at menarche in 6731 women with a wide variation of age when giving the information about age at menarche. The women reported age at ...