Grethe Albrektsen
153.01.003 Øya helsehus – østfløy Øya, Trondheim
About
Academic title
Albrektsen is employed as professor in medical statistic at NTNU, the Faculty of Medicince and Public Health. Area of work relates to scientific research, teaching and supervision in medical statistics.
Academic degree
Cand. scient. in statistic, signal- and dataanalysis (Title of thesis: 'Effect of misclassification in independent variable in logistic regression), Department of Mathematics, Faculty of Matematics and Natural science, University of Bergen, Norway (1989).
Dr. philos., cancer epidemiology/medical statistics: 'Time-related effect of a pregnancy on the risk of female cancers: a prospective study of one million Norwegian women aged 20-56 year', Section for medical informatic and statistics, Faculty of Medicine, University of Bergen, Norway (1998).
Area of research
Main research relates to analysis of data from large, prospective, population-based cohort studies, with time-varying exposure as well as time-varying effects, within the field of cancer and cardiovascular disease epidemiology. Comprehensive research experience through several collaboration projects related to epidemiological and clinical studies, prognostic studies, intervention- and experimental studies, projects within diagnostic testing and reliability studies, and quality of life and social science studies, with applications of a wide range of statistical methods through different design of studies (repeated measures, survival data, data from cross-sectional surveys, case-control data).
Competencies
Publications
2023
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Albrektsen, Grethe;
Wilsgaard, Tom;
Heuch, Ivar;
Løchen, Maja-Lisa;
Thelle, Dag Steinar;
Njølstad, Inger;
Grimsgaard, Sameline;
Bønaa, Kaare Harald.
(2023)
Lipid Levels During Adult Lifetime in Men and Women With and Without a Subsequent Incident Myocardial Infarction: A Longitudinal Analysis of Data From the Tromsø Study 1974 to 2016 - PubMed.
Journal of the American Heart Association (JAHA)
Academic article
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Albrektsen, Grethe;
Wilsgaard, Tom;
Heuch, Ivar;
Løchen, Maja-Lisa;
Thelle, Dag Steinar;
Njølstad, Inger;
Grimsgaard, Sameline;
Bønaa, Kaare Harald.
(2023)
Lipid Levels During Adult Lifetime in Men and Women With and Without a Subsequent Incident Myocardial Infarction: A Longitudinal Analysis of Data From the Tromsø Study 1974 to 2016.
Journal of the American Heart Association (JAHA)
Academic article
2017
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Albrektsen, Grethe;
Heuch, Ivar;
Løchen, Maja-Lisa;
Thelle, Dag Steinar;
Wilsgaard, Tom;
Njølstad, Inger;
Bønaa, Kaare.
(2017)
Risk of incident myocardial infarction by gender: Interactions with serum lipids, blood pressure and smoking. The Tromsø Study 1979-2012.
Atherosclerosis
Academic article
2016
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Albrektsen, Grethe;
Heuch, Ivar;
Løchen, Maja-Lisa;
Thelle, Dag Steinar;
Wilsgaard, Tom;
Njølstad, Inger;
Bønaa, Kaare.
(2016)
Lifelong gender gap in risk of incident myocardial infarction: The Tromsø study.
JAMA Internal Medicine
Academic article
2005
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Albrektsen, Grethe;
Heuch, Ivar;
Hansen, Svein;
Kvåle, Gunnar.
(2005)
Breast cancer risk by age at birth, time since birth and time intervals between births: exploring interaction effects.
British Journal of Cancer
Academic article
1999
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Albrektsen, Grethe;
Heuch, Ivar;
Kvåle, Gunnar.
(1999)
Joint effects on cancer risk of age at childbirth, time since birth and attained age: circumventing the problem of collinearity.
Statistics in Medicine
Academic article
Journal publications
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Albrektsen, Grethe;
Wilsgaard, Tom;
Heuch, Ivar;
Løchen, Maja-Lisa;
Thelle, Dag Steinar;
Njølstad, Inger;
Grimsgaard, Sameline;
Bønaa, Kaare Harald.
(2023)
Lipid Levels During Adult Lifetime in Men and Women With and Without a Subsequent Incident Myocardial Infarction: A Longitudinal Analysis of Data From the Tromsø Study 1974 to 2016 - PubMed.
Journal of the American Heart Association (JAHA)
Academic article
-
Albrektsen, Grethe;
Heuch, Ivar;
Hansen, Svein;
Kvåle, Gunnar.
(2005)
Breast cancer risk by age at birth, time since birth and time intervals between births: exploring interaction effects.
British Journal of Cancer
Academic article
-
Albrektsen, Grethe;
Heuch, Ivar;
Kvåle, Gunnar.
(1999)
Joint effects on cancer risk of age at childbirth, time since birth and attained age: circumventing the problem of collinearity.
Statistics in Medicine
Academic article
-
Albrektsen, Grethe;
Heuch, Ivar;
Løchen, Maja-Lisa;
Thelle, Dag Steinar;
Wilsgaard, Tom;
Njølstad, Inger;
Bønaa, Kaare.
(2017)
Risk of incident myocardial infarction by gender: Interactions with serum lipids, blood pressure and smoking. The Tromsø Study 1979-2012.
Atherosclerosis
Academic article
-
Albrektsen, Grethe;
Wilsgaard, Tom;
Heuch, Ivar;
Løchen, Maja-Lisa;
Thelle, Dag Steinar;
Njølstad, Inger;
Grimsgaard, Sameline;
Bønaa, Kaare Harald.
(2023)
Lipid Levels During Adult Lifetime in Men and Women With and Without a Subsequent Incident Myocardial Infarction: A Longitudinal Analysis of Data From the Tromsø Study 1974 to 2016.
Journal of the American Heart Association (JAHA)
Academic article
-
Albrektsen, Grethe;
Heuch, Ivar;
Løchen, Maja-Lisa;
Thelle, Dag Steinar;
Wilsgaard, Tom;
Njølstad, Inger;
Bønaa, Kaare.
(2016)
Lifelong gender gap in risk of incident myocardial infarction: The Tromsø study.
JAMA Internal Medicine
Academic article
Teaching
Courses
Outreach
2022
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Feature articleLøchen, Maja-Lisa; Njølstad, Inger; Grimsgaard, Sameline; Albrektsen, Grethe. (2022) Risiko for hjerteinfarkt er forskjellig hos kvinner og menn – men hvorfor? Analyser av data fra Tromsøundersøkelsen gir nye svar på hvordan risikoen for hjerteinfarkt hos kvinner og menn arter seg.
2020
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Conference posterAlbrektsen, Grethe; Heuch, Ivar; Wilsgaard, Tom; Løchen, Maja-Lisa; Thelle, Dag Steinar; Njølstad, Inger; Bønaa, Kaare Harald. (2020) Adverse effect of diabetes on risk of myocardial infarction by gender and age. A methodological challenge. International Society for Clinical Biostatistics (ISCB), international virtual conference
2019
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Conference lectureNyrønning, Linn Åldstedt; Stenman, Malin; Hultgren, Rebecka; Albrektsen, Grethe; Videm, Vibeke; Mattsson, Erney. (2019) Symptoms of Depression and Risk of Abdominal Aortic Aneurysm: A HUNT Study (Oral presentation). Charing Cross Symposium 2019
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Conference lectureOlaisen, Maya; Spigset, Olav; Flatberg, Arnar; Granlund, Atle van Beelen; Rødseth, Brede Wenche; Albrektsen, Grethe; Røyset, Elin Synnøve; Gilde, Bodil; Sandvik, Arne Kristian; Martinsen, Tom Christian. (2019) Mucosal 5-ASA konsentrasjon, 5-ASA formulering og mucosalt mikrobiom i venstre hemicolon og rektum hos pasienter med ulcerøs colitt. Norsk Gastroenterologisk Forening
2018
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Conference posterOlaisen, Maya; Spigset, Olav; Sandvik, Arne Kristian; Albrektsen, Grethe; Røyset, Elin Synnøve; Martinsen, Tom Christian; Fossmark, Reidar. (2018) Mucosal 5-ASA concentration in the left hemicolon and rectum in patients with quiescent ulcerative colitis. United European Gastroenterology Week (UEGW)
2016
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Conference posterAlbrektsen, Grethe; Heuch, Ivar; Wilsgaard, Tom; Bønaa, Kaare. (2016) Three-way interaction effects in terms of combined categories of interacting factors: comparing gender-specific risk estimates across three broad age groups. Population-based Time-to-Event Analysis International Conference
2004
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Conference lectureAlbrektsen, Grethe; Heuch, Ivar. (2004) Cubic spline regression models for estimation of non-linear associations in epidemiology: Prediction of breast cancer risk by time since a childbirth. 22nd International Biometric Conference
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Conference lectureAlbrektsen, Grethe; Heuch, Ivar; Hansen, Svein; Kvåle, Gunnar. (2004) Spline-regresjon for estimering av ikke-lineære sammenhenger i epidemiologi: Prediksjon av brystkreftrisiko etter et svangerskap basert på data fra nasjonale registre. Den tolvte norske epidemiologikonferansen
2001
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Conference lectureNatvig, Gerd Karin; Albrektsen, Grethe; Qvarnström, Ulla. (2001) Psychosomatic symptoms among victims of school bullying. Improving Life Through Health Promotion; Nurses making a Difference
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Conference lectureNatvig, Gerd Karin; Albrektsen, Grethe; Qvarnström, Ulla. (2001) Psychosomatic symptoms among victims of school bullying. The International Conference Improving life through health promotion: Nurses making a difference
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Conference lectureNatvig, Gerd Karin; Albrektsen, Grethe; Qvarnström, Ulla. (2001) Psychosomatic symptoms among victims of school bullying. The International Conference Improving life through health promotion: Nurses making a difference
2000
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Conference lectureNilsen, Dennis W T; Albrektsen, Grethe; Landmark, K; Moen, S; Aarsland, T; Woie, L. (2000) A randomised study to evaluate the clinical efficacy of a high dosed concentrate of n-3 fatty acids introduced early after an acute myocardial infarction. ESC
1998
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Conference lectureHeuch, Ivar; Albrektsen, Grethe; Kvåle, Gunnar. (1998) Modelling effects of age at and time since delivery on subsequent cancer risk. The 19th International Biometric Conference
1997
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Conference lectureAlbrektsen, Grethe; Heuch, Ivar; Kvåle, Gunnar. (1997) Joint effects on cancer risk of age at childbirth, time since birth and attained age: a solution to the problem of collinearity?. International Biometric Society, Nordic regional meeting
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Conference posterSalvesen, Helga; Akslen, Lars A.; Albrektsen, Grethe; Iversen, Ole-Erik. (1997) Decreased survival for nulliparous women with endometrial carcinoma. Is the relationship dur to biology or behaviour? [poster]. 10th International Meeting of Gynaecological Oncology
1995
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Feature articleAlbrektsen, Grethe; Heuch, Ivar; Tretli, Steinar; Kvåle, Gunnar. (1995) Age at first and last birth and risk of breast cancer.