Harald Weedon-Fekjær

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Academic interests

  • Statistical modeling and simulation
  • Applied statistics
  • Statistical computing and software
  • Teaching of statistics

Ongoing work

  • Evaluating the potential effect of mammography screening on breast cancer mortality (main project)
  • Estimating the natural progression of breast cancer and DCIS and its implications
  • Developing good methods for Cancer mortality predictions
  • Studying breast cancer epidemiology

Teaching

Higher education and employment history

  • PhD in medical statistics, University of Oslo, Norway (2008)
  • Master in mathematical statistics, University of Oslo, Norway (1999)

Honoraria

  • "Breast cancer tumor growth estimated through mammography screening data” (by Weedon-Fekjær et. al., 2008) was selected as article of the year 2008 by the Norwegian Epidemiological Association.
     

Collaboration

  • Part of US NCI-sponsored CISNET (The Cancer Intervention and Surveillance Modeling Network) consortium though Dana-Farber Cancer Institute / Harvard University (USA).  

Other

Tags: Biostatistics, Breast cancer, Simulation

Publications

  • “Modern mammography screening and breast cancer mortality: population study”, Weedon-Fekjær et. al., BMJ 2014
  • “Understanding recent invasive breast cancer incidence trends using Age-Period-Cohort analysis and registry data on mammography screening and hormone treatment use”, Weedon-Fekjær et. al., BMJ 2012
  • “Breast cancer tumor growth estimated through mammography screening data”, Weedon-Fekjær et. al., Breast Cancer Research 2008
  • Sundby, Øyvind Heiberg; Høiseth, Lars Øivind; Mathiesen, Iacob; Weedon-Fekjær, Harald; Sundhagen, Jon Otto & Hisdal, Jonny (2017). The acute effects of lower limb intermittent negative pressure on foot macro-and microcirculation in patients with peripheral arterial disease. PLoS ONE.  ISSN 1932-6203.  12:e0179001(6), s 1- 16 . doi: 10.1371/journal.pone.0179001
  • Trewin, Cassia Bree; Strand, Bjørn Heine; Weedon-Fekjær, Harald & Ursin, Giske (2017). Changing patterns of breast cancer incidence and mortality by education level over four decades in Norway, 1971-2009.. European Journal of Public Health.  ISSN 1101-1262.  27(1), s 160- 166 . doi: 10.1093/eurpub/ckw148
  • Boldingh, Marion; Maniaol, Angelina; Brunborg, Cathrine; Weedon-Fekjær, Harald; Verschuuren, Jan J. G. M & Tallaksen, Chantal (2016). Increased risk for clinical onset of myasthenia gravis during the postpartum period. Neurology.  ISSN 0028-3878.  87(20), s 2139- 2145 . doi: 10.1212/WNL.0000000000003339
  • Sundby, Øyvind Heiberg; Høiseth, Lars Øivind; Mathiesen, Iacob; Jørgensen, Jørgen J.; Weedon-Fekjær, Harald & Hisdal, Jonny (2016). Application of intermittent negative pressure on the lower extremity and its effect on macro- and microcirculation in the foot of healthy volunteers. Physiological Reports.  ISSN 2051-817X.  4(17) . doi: 10.14814/phy2.12911 Full text in Research Archive.
  • Berner, Kjetil; Hall, Kirsten Sundby; Monge, Odd R; Weedon-Fekjær, Harald; ZAIKOVA, OLGA & Bruland, Øyvind (2015). Prognostic factors and treatment results of high-grade osteosarcoma in Norway: A scope beyond the "classical" patient. Sarcoma.  ISSN 1357-714X.  2015 . doi: 10.1155/2015/516843
  • Fosså, Sophie Dorothea; Dahl, Alv A; Langhammer, Arnulf & Weedon-Fekjær, Harald (2015). Cancer patients' participation in population-based health surveys: Findings from the HUNT studies Cancer. BMC Research Notes.  ISSN 1756-0500.  8:649 . doi: 10.1186/s13104-015-1635-5
  • Gangnon, Ronald E.; Sprague, Brian L.; Stout, Natasha K.; Alagoz, Oguz; Weedon-Fekjær, Harald; Holford, Theodore R. & Trentham-Dietz, Amy (2015). The contribution of mammography screening to breast cancer incidence trends in the United States: An updated age-period-cohort model. Cancer Epidemiology, Biomarkers and Prevention.  ISSN 1055-9965.  24(6), s 905- 912 . doi: 10.1158/1055-9965.EPI-14-1286
  • Löffeler, Sven; Weedon-Fekjær, Harald; Wang-Hansen, Marte Sofie; Sebakk, Karin; Hamre, Hanne Mari; Haug, Erik Skaaheim & Fosså, Sophie Dorothea (2015). "Natural course" of disease in patients with metastatic castrate-resistant prostate cancer: Survival and prognostic factors without life-prolonging treatment. Scandinavian journal of urology.  ISSN 2168-1805.  49(6), s 440- 445 . doi: 10.3109/21681805.2015.1059881
  • Zaikova, Olga; Hall, Kirsten Sundby; Styring, Emelie; Eriksson, Mikael; Trovik, Clement; Bergh, Peter; Bjerkehagen, Bodil; Skorpil, Mikael; Weedon-Fekjær, Harald & Bauer, Henrik C.F. (2015). Referral patterns, treatment and outcome of high-grade malignant bone sarcoma in Scandinavia - SSG Central Register 25 years' experience. Journal of Surgical Oncology.  ISSN 0022-4790.  112(8), s 853- 860 . doi: 10.1002/jso.24074
  • Popova, Olesya; Gershenson, D.M.; Tropé, Claes Gøran; Rokkones, Erik; Sun, C.C.; Weedon-Fekjær, Harald & Fosså, Sophie Dorothea (2014). Prognostic factors in malignant ovarian germ cell tumours (The Surveillance, Epidemiology and End Results experience 1978-2010). European Journal of Cancer.  ISSN 0959-8049.  50(11), s 1942- 1950 . doi: 10.1016/j.ejca.2014.03.288
  • Weedon-Fekjær, Harald; Romundstad, Pål Richard & Vatten, Lars Johan (2014). Modern mammography screening and breast cancer mortality: Population study. BMJ (British Medical Journal).  ISSN 0959-8146.  348 . doi: 10.1136/bmj.g3701 Full text in Research Archive.
  • Weedon-Fekjær, Harald; Bakken, Kjersti; Vatten, Lars Johan & Tretli, Steinar (2012). Understanding recent trends in incidence of invasive breast cancer in Norway: age-period-cohort analysis based on registry data on mammography screening and hormone treatment use. BMJ (British Medical Journal).  ISSN 0959-8146.  344 . doi: 10.1136/bmj.e299
  • Weedon-Fekjær, Harald; Weedon-Fekjaer, H; Lindqvist, Bo Henry; Vatten, Lars Johan; Aalen, O & Tretli, Steinar (2008). Estimating mean sojourn time and screening sensitivity using questionnaire data on time since previous screening. Journal of Medical Screening.  ISSN 0969-1413.  15, s 83- 90 . doi: 10.1258/jms.2008.007071
  • Weedon-Fekjær, Harald; Weedon-Fekjaer, H; Lindqvist, Bo Henry; Vatten, Lars Johan; Aalen, OO & Tretli, Steinar (2008). Breast cancer tumor growth estimated through mammography screening data. Breast Cancer Research.  ISSN 1465-542X.  10(3) . doi: 10.1186/bcr2092
  • Andersson, G; Noack, T; Seierstad, A & Weedon-Fekjær, Harald (2006). The demographics of same-sex marriages in Norway and Sweden. Demography.  ISSN 0070-3370.  43
  • Møller, Bjørn; Weedon-Fekjær, Harald; Hakulinen, T; Tryggvadottir, L; Storm, HH; Talback, M & Haldorsen, Tor (2005). The influence of mammographic screening on national trends in breast cancer incidence. European Journal of Cancer Prevention.  ISSN 0959-8278.  14, s 117- 128
  • Møller, Bjørn; Weedon-Fekjær, Harald & Haldorsen, Tor (2005). Empirical evaluation of prediction intervals for cancer incidence. BMC Medical Research Methodology.  ISSN 1471-2288.  5
  • Noack, T; Seierstad, A & Weedon-Fekjær, Harald (2005). A demographic analysis of registered partnerships (legal same-sex unions): The case of Norway. European Journal of Population.  ISSN 0168-6577.  21, s 89- 109
  • Weedon-Fekjær, Harald; Vatten, L; Aalen, Odd Olai; Lindqvist, B & Tretli, S (2005). Estimating mean sojourn time and screening test sensitivity in breast cancer mammography screening; New results. Journal of Medical Screening.  ISSN 0969-1413.  12(4), s 172- 178
  • Weedon-Fekjær, Harald; Vatten, Lars Johan; Aalen, Odd; Lindqvist, Bo Henry & Tretli, Steinar (2005). Estimating mean sojourn time and screening test sensitivity in breast cancer mammography screening: new results. Journal of Medical Screening.  ISSN 0969-1413.  12(4), s 172- 178
  • Aalen, Odd Olai; Fosen, Johan; Weedon-Fekjær, Harald; Borgan, Ørnulf & Husebye, Einar (2004). Dynamic analysis of multivariate failure time data. Biometrics.  ISSN 0006-341X.  60, s 764- 773
  • Aalen, Odd Olai; Moger, Tron Anders; Amundsen, Ellen; Sæbø, Solve & Weedon-Fekjær, Harald (2003). Overlevelses- og forløpsanalyse: Det tematiske området Norevent. Norsk Epidemiologi.  ISSN 0803-2491.  13(2), s 233- 238 Show summary
  • Amundsen, Ellen Johanna & Weedon-Fekjær, Harald (2003). Progression to AIDS slowed even more after the first two years with highly active antiretroviral therapy. Scandinavian Journal of Public Health.  ISSN 1403-4948.  31(4), s 312- 318 . doi: 10.1080/14034940210165000 Show summary
  • Møller, Bjørn; Weedon-Fekjær, Harald; Hakulinen, Timo; Sigvaldason, Helgi; Storm, Hans H.; Talbæk, Mats & Haldorsen, Tor (2003). Prediction of cancer incidence in the Nordic countries: empirical comparison of different approaches. Statistics in Medicine.  ISSN 0277-6715.  22(17), s 2751- 2766 . doi: 10.1002/sim.1481
  • Møller, Bjørn; Weedon-Fekjær, Harald; Hakulinen, Timo; Sigvaldason, Helgi; Storm, Hans H.; Talbæk, Mats & Haldorsen, Tor (2002). Prediction of cancer incidence in the Nordic countries up to years 2022; A collaborative study of the five Nordic Cancer Registries. European Journal of Cancer Prevention.  ISSN 0959-8278.  11
  • Aalen, Odd Olai; Borgan, Ørnulf & Weedon-Fekjær, Harald (2001). Covariate adjustment of event histories estimated from Markov chains: The additive approach. Biometrics.  ISSN 0006-341X.  57, s 993- 1001
  • Weedon-Fekjær, Harald (2012). Effectiveness of population-based service screening with mammography for women ages 40 to 49 years Evaluation of the Swedish Mammography Screening in Young Women (SCRY) Cohort. Cancer.  ISSN 0008-543X.  118(4), s 1169- 1169 . doi: 10.1002/cncr.26163
  • Weedon-Fekjær, Harald; Sørum, Ragnhild & Brenn, Marianne Kolstad (2009). Hormone Therapy Use May Explain Recent Results Regarding Tumor Regression. Archives of Internal Medicine.  ISSN 0003-9926.  169(10), s 996- 997
Published Nov. 30, 2012 10:46 AM - Last modified May 23, 2016 11:33 AM