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Bilde av Kristoffersen, Doris Tove
Bilde av Kristoffersen, Doris Tove
Førsteamanuensis Department of Archaeology, History, Religious Studies and Theology doris.t.kristoffersen@uit.no +4777645936 You can find me here

Doris Tove Kristoffersen

  • Kathrin Wolf, Sophia Rodopoulou, Jie Chen, Zorana J. Andersen, Richard W. Atkinson, Mariska Bauwelinck et al.:
    Comparison of traditional Cox regression and causal modeling to investigate the association between long-term air pollution exposure and natural-cause mortality within European cohorts
    Environmental Pollution (1987) 2023 DOI
  • Jie Chen, Danielle Braun, Tanya Christidis, Michael Cork, Sophia Rodopoulou, Evangelia Samoli et al.:
    Long-Term Exposure to Low-Level PM2.5 and Mortality: Investigation of Heterogeneity by Harmonizing Analyses in Large Cohort Studies in Canada, United States, and Europe
    Environmental Health Perspectives 2023 ARKIV / DOI
  • Massimo Stafoggia, Bente Margaret Oftedal, Jie Chen, Sophia Rodopoulou, Matteo Renzi, Richard W. Atkinson et al.:
    Long-term exposure to low ambient air pollution concentrations and mortality among 28 million people: results from seven large European cohorts within the ELAPSE project
    The Lancet Planetary Health 2022 ARKIV / DOI
  • Karin Magnusson, Katrine Damgaard Skyrud, Pål Suren, Margrethe Greve-Isdahl, Ketil Størdal, Doris Tove Kristoffersen et al.:
    Healthcare use in 700 000 children and adolescents for six months after covid-19: before and after register based cohort study
    The BMJ 2022 ARKIV / DOI
  • Jon Helgeland, Doris Tove Kristoffersen, Katrine Damgaard Skyrud :
    Does a Code for Acute Myocardial Infarction Mean the Same in All Norwegian Hospitals? A Likelihood Approach to a Medical Record Review
    Clinical Epidemiology 2022 ARKIV / DOI
  • Karin Magnusson, Doris Tove Kristoffersen, Andrea Dell’Isola, Ali Kiadaliri, Aleksandra Turkiewicz, Jos Runhaar et al.:
    Post-covid medical complaints following infection with SARS-CoV-2 Omicron vs Delta variants
    Nature Communications 2022 ARKIV / DOI
  • Hanna Eikås Klem, Tuva Sofie Tveiten, Sigrid Beitland, Stine Malerød, Doris Tove Kristoffersen, Terese Dalsnes et al.:
    Tidlig aktivitet hos respiratorpasienter – en metaanalyse
    Tidsskrift for Den norske legeforening 2021 ARKIV / DOI
  • Evangelia Samoli, Sophia P. Rodopoulou, Ulla A. Hvidtfeldt, Kathrin Wolf, Massimo Stafoggia, Bert Brunekreef et al.:
    Modeling multi-level survival data in multi-center epidemiological cohort studies: Applications from the ELAPSE project
    Environment International 2021 ARKIV / DOI
  • Shuo Liu, Jeanette Therming Jørgensen, Petter Ljungman, Göran Pershagen, Tom Bellander, Karin Leander et al.:
    Long-term exposure to low-level air pollution and incidence of asthma: The ELAPSE project
    European Respiratory Journal 2021 DOI
  • Katrine Damgaard Skyrud, Doris Tove Kristoffersen, Jon Helgeland :
    30 dagers overlevelse og reinnleggelse etter sykehusinnleggelse. Resultater for 2019
    Folkehelseinstituttet 2020 ARKIV
  • Shuo Liu, Jeanette Therming Jørgensen, Petter Ljungman, Göran Pershagen, Tom Bellander, Karin Leander et al.:
    Long-term exposure to lowlevel air pollution and incidence of asthma: the ELAPSE project
    European Respiratory Journal 2020 DOI
  • Jon Helgeland, Oliver Tomic, Tonya Moen Hansen, Doris Tove Kristoffersen, Sahar Hassani, Anne Karin Lindahl :
    Postoperative wound dehiscence after laparotomy: a useful healthcare quality indicator? A cohort study based on Norwegian hospital administrative data
    BMJ Open 2019 ARKIV / DOI
  • Charlotte Christine Gibbs, Jacob Thalamus, Doris Tove Kristoffersen, Martin Veel Svendsen, Øystein Lunde Holla, Kristian Heldal et al.:
    QT prolongation predicts short-term mortality independent of comorbidity
    Europace 2019 ARKIV / DOI
  • Katrine Damgaard Skyrud, Eirik Vikum, Tonya Moen Hansen, Doris Tove Kristoffersen, Jon Helgeland :
    Hospital Variation in 30‐Day Mortality for Patients With Stroke; The Impact of Individual and Municipal Socio‐Demographic Status
    Journal of the American Heart Association (JAHA) 2019 ARKIV / DOI
  • Doris Tove Kristoffersen, Jon Helgeland, Jocelyne Clench-Aas, Petter Laake, Marit Bragelien Veierød :
    Observed to expected or logistic regression to identify hospitals with high or low 30-day mortality?
    PLOS ONE 2018 FULLTEKST / ARKIV / DOI
  • Daniel Semakula, Allen Nsangi, Andrew David Oxman, Matthew Prescott Oxman, Astrid Austvoll-Dahlgren, Sarah Rosenbaum et al.:
    Effects of the Informed Health Choices podcast on the ability of parents of primary school children in Uganda to assess claims about treatment effects: a randomised controlled trial
    The Lancet 2017 ARKIV / DOI
  • Jon Helgeland, Doris Tove Kristoffersen, Katrine Damgaard Skyrud, Anja Schou Lindman :
    Variation between Hospitals with Regard to Diagnostic Practice, Coding Accuracy, and Case-Mix. A Retrospective Validation Study of Administrative Data versus Medical Records for Estimating 30-Day Mortality after Hip Fracture
    PLOS ONE 2016 ARKIV / FULLTEKST / DOI
  • Sahar Hassani, Anja Schou Lindman, Doris Tove Kristoffersen, Oliver Tomic, Jon Helgeland :
    30-Day Survival Probabilities as a Quality Indicator for Norwegian Hospitals: Data Management and Analysis
    PLOS ONE 09. September 2015 DOI
  • Doris Tove Kristoffersen, Jon Helgeland, Halfrid Waage, Jacob Thalamus, Dirk Clemens, Anja Schou Lindman et al.:
    Survival curves to support quality improvement in hospitals with excess 30-day mortality after acute myocardial infarction, cerebral stroke and hip fracture: A before-after study
    BMJ Open 2015 DOI
  • Petja Lyn Langholz, Hilde Leikny Sommerseth, Doris Tove Kristoffersen, Laila Arnesdatter Hopstock :
    Childhood socioeconomic position and later-life health – linking a modern health survey to 20th century historical population data
    2023
  • Doris Tove Kristoffersen, Ingrid Sperre Saunes :
    Responstider for ambulanser og pasientutfall.
    Folkehelseinstituttet 2023 FULLTEKST / ARKIV
  • Doris Tove Kristoffersen :
    Historisk befolkningsregister - hva er det og litt om hvordan vi kan bruke det bl.a. i dagens helseundersøkelser
    2022
  • Doris Tove Kristoffersen, Katrine Damgaard Skyrud, Jon Helgeland :
    30 dagers overlevelse og reinnleggelse etter sykehusinnleggelse. Litt generelt og noen resultater for 2019.
    2022
  • Doris Tove Kristoffersen, Katrine Damgaard Skyrud, Tonya Moen Hansen, Jon Helgeland :
    Are there still differences between Norwegian hospitals? Ten years reporting of 30-day mortality as a quality indicator.
    2022
  • Doris Tove Kristoffersen, Katrine Damgaard Skyrud, Tonya Moen Hansen, Jon Helgeland :
    10-YEAR EXPERIENCE WHEN CALCULATING AND USING 30-DAY MORTALITY AS A QUALITY INDICATOR FOR NORWEGIAN HOSPITALS
    2022
  • Ingrid Sperre Saunes, Doris Tove Kristoffersen :
    Emergency preparedness, ambulance response time and patient outcome.
    2022
  • Ingrid Sperre Saunes, Doris Tove Kristoffersen :
    Ambulansers responstid - regulering og rapportering i ti land
    Folkehelseinstituttet 2022 ARKIV / FULLTEKST
  • Katrine Damgaard Skyrud, Doris Tove Kristoffersen, Jon Helgeland :
    2020 FULLTEKST / ARKIV
  • Doris Tove Kristoffersen, Anette Hylen Ranhoff :
    Hospital readmissions and death within 30 days and 1 year for patients with hip fracture – a multi-state model
    2020
  • Katrine Damgaard Skyrud, Doris Tove Kristoffersen, Tonya Moen Hansen, Jon Helgeland :
    Kvalitet i helsetjenesten: 30 dagers overlevelse og reinnleggelse etter sykehusinnleggelse. Resultater for 2017
    Folkehelseinstituttet 2019 FULLTEKST
  • Jon Helgeland, Oliver Tomic, Doris Tove Kristoffersen, Sahar Hassani, Anne Karin Lindahl :
    Is wound dehiscence after laparotomy a useful indicator of patient safety for Norwegian hospitals?
    2018
  • Tonya Moen Hansen, Doris Tove Kristoffersen, Anja Elsrud Schou Lindman, Jon Helgeland :
    30-day mortality after admission for pneumonia based on administrative data - variation between hospitals
    2018
  • Doris Tove Kristoffersen, Jon Helgeland, Petter Laake, Marit Bragelien Veierød :
    Hospitals with high or low 30-day mortality - which method should we use to identify outliers?
    2018
  • Tonya Moen Hansen, Doris Tove Kristoffersen, Oliver Tomic, Jon Helgeland :
    Avoidable hospital admissions, length of hospital stay and probability of 30-day hospital readmission among elderly in Norway
    2017
  • Tonya Moen Hansen, Doris Tove Kristoffersen, Oliver Tomic, Jon Helgeland :
    Kvalitetsindikatoren 30 dagers overlevelse etter sykehusinnleggelse. Resultater for 2016
    Folkehelseinstituttet 2017 ARKIV / FULLTEKST
  • Jon Petter Blixt, Alice Beathe Andersgaard, Halfrid Waage, Helge Stene-Johansen, Per Engstrand, Tonya Moen Hansen et al.:
    Experience with using 30-day survival curves to improve quality of care
    2017
  • Doris Tove Kristoffersen, Tonya Moen Hansen, Oliver Tomic, Jon Helgeland :
    Unngåelige innleggelser, liggetid og sannsynlighet for akutt reinnleggelse av eldre pasienter i Norge
    2017
  • Doris Tove Kristoffersen, Tonya Moen Hansen, Oliver Tomic, Jon Helgeland :
    Kvalitetsindikatoren 30 dagers reinnleggelse etter sykehusopphold. Resultater for helseforetak og kommuner 2016
    Folkehelseinstituttet 2017 FULLTEKST / ARKIV
  • Doris Tove Kristoffersen, Tonya Moen Hansen, Anja Elsrud Schou Lindman, Oliver Tomic, Jon Helgeland :
    Kvalitetsindikatoren 30 dagers reinnleggelse etter sykehusopphold. Resultater for sykehus og kommuner 2014
    Folkehelseinstituttet 2016 ARKIV
  • Tonya Moen Hansen, Doris Tove Kristoffersen, Jon Helgeland :
    Overlevelse ved Sykehuset i Østfold: Oppfølging fra møtet 12.09.2016
    2016
  • Doris Tove Kristoffersen, Tonya Moen Hansen, Oliver Tomic, Anja Schou Lindman, Jon Helgeland :
    Avoidable hospital admissions, length of hospital stay and probability of 30-day hospital readmission among elderly in Norway
    2016
  • Doris Tove Kristoffersen, Jon Helgeland, Jocelyne Clench-Aas, Petter Laake, Marit Bragelien Veierød :
    Type I error and power for detecting hospitals with high or low 30-day mortality
    2016
  • Tonya Moen Hansen, Doris Tove Kristoffersen, Oliver Tomic, Jon Helgeland :
    Folkehelseinstituttet 2016 ARKIV / FULLTEKST
  • Tonya Moen Hansen, Doris Tove Kristoffersen, Oliver Tomic, Jon Helgeland :
    Folkehelseinstituttet 2016 ARKIV
  • Anja Schou Lindman, Doris Tove Kristoffersen, Tonya Moen Hansen, Oliver Tomic, Jon Helgeland :
    Kvalitetsindikatoren 30-dagers overlevelse etter innleggelse i norske sykehus – resultater for året 2014
    2015 ARKIV
  • Doris Tove Kristoffersen, Anja Schou Lindman, Oliver Tomic, Jon Helgeland :
    Re: Hvordan sammenlikner vi kvalitet i helsetjenesten?
    Tidsskrift for Den norske legeforening 2015 DOI
  • Doris Tove Kristoffersen, Anja Schou Lindman, Oliver Tomic, Jon Helgeland :
    Nasjonale kvalitetsindikatorer og resultater for Helgelandssykehuset HF
    2015
  • Anja Schou Lindman, Oliver Tomic, Sahar Hassani, Doris Tove Kristoffersen, Jon Helgeland :
    30-dagers overlevelse - institusjonsrapporter - 2. utgave
    2015
  • Anja Schou Lindman, Doris Tove Kristoffersen, Oliver Tomic :
    30-dagers reinnleggelse av eldre etter utskrivning fra sykehus
    2015
  • Anja Schou Lindman, Doris Tove Kristoffersen, Sahar Hassani, Oliver Tomic, Jon Helgeland :
    30-dagers reinnleggelse av eldre 2011–2013. Resultater for sykehus og kommuner
    2015 ARKIV

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    Research interests

    Applied statistics, descriptive statistics, quantative methods, survival analysis, logistic regression, epidemioplogy, historical demography, meta-analysis

    ORCID: 0000-0002-8220-2532

    Member of research group

    Changing Arctic   English content

    Member of project

    “Ethnic drifting” and health outcome – Northern Norway 1865-2023