Helle Collatz Christensen

Helle Collatz Christensen

Clinical Associate Professor

Member of:

  • Emergency Medicine


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  1. Published

    To explain or not to explain? Artificial intelligence explainability in clinical decision support systems

    Amann, J., Vetter, D., Blomberg, S. N., Christensen, Helle Collatz, Coffee, M., Gerke, S., Gilbert, T. K., Hagendorff, T., Holm, Sune Hannibal, Livne, M., Spezzatti, A., Strümke, I., Zicari, R. V. & Madai, V. I., 2022, In: PLOS Digital Health. 1, 2, 18 p., e0000016.

    Research output: Contribution to journal › Journal article › Research › peer-review

  2. Published

    Smartphone Activation of Citizen Responders to Facilitate Defibrillation in Out-of-Hospital Cardiac Arrest

    Andelius, L., Malta Hansen, C., Lippert, F. K., Karlsson, L., Torp-Pedersen, Christian, Kjær Ersbøll, A., Køber, Lars Valeur, Christensen, Helle Collatz, Blomberg, S. N., Gislason, Gunnar Hilmar & Folke, Fredrik, 2020, In: Journal of the American College of Cardiology. 76, 1, p. 43-53

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Published

    Risk of coronavirus disease 2019 (Covid-19) contraction and severe infection in home- or healthcare professionals: Home- or Healthcare professionals’ risk of Covid-19

    Andersen, M. P., Østergaard, L., Phelps, M., Butt, J. H., Køber, Lars Valeur, Gislason, Gunnar Hilmar, Christensen, Helle Collatz, Torp-Pedersen, Christian, Schou, Morten, Fosbøl, E. L. & Kragholm, K., Aug 2021, In: Journal of Infection. 83, 2, p. e12-e14 3 p.

    Research output: Contribution to journal › Comment/debate › Research › peer-review

  4. Published

    The Danish National Child Health Register

    Andersen, M. P., Wiingreen, R., Eroglu, T. E., Christensen, Helle Collatz, Polcwiartek, L. B., Blomberg, S. N. F., Kragholm, K., Torp-Pedersen, Christian & Sørensen, Kathrine Kold, 2023, In: Clinical Epidemiology. 15, p. 1087-1094 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. Published

    All-cause mortality among Danish nursing home residents before and during the COVID-19 pandemic: a nationwide cohort study

    Andersen, M. P., Mills, E. H. A., Meddis, Alessandra, Sørensen, Kathrine Kold, Butt, J. H., Køber, Lars Valeur, Poulsen, Henrik Enghusen, Phelps, M., Gislason, Gunnar Hilmar, Christensen, Helle Collatz, Schou, Morten, Fosbøl, E. L., Gerds, Thomas Alexander, Kragholm, K. & Torp-Pedersen, Christian, 2023, In: European Journal of Epidemiology. 38, p. 523–531 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. Published

    Recognition of visual symptoms in stroke: a challenge to patients, bystanders, and Emergency Medical Services

    Berg, K. P., Sørensen, V. F. I., Blomberg, S. N. F., Christensen, Helle Collatz & Kruuse, Christina Rostrup, 2023, In: BMC Emergency Medicine. 23, 1, 17 p., 96.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    Sociodemographic and health-related determinants for making repeated calls to a medical helpline: a prospective cohort study

    Blakoe, M., Gamst-Jensen, H., von Euler-Chelpin, My Catarina, Christensen, Helle Collatz & Møller, Tom, 2019, In: BMJ Open. 9, 7, 8 p., 030173.

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Published

    Effect of Machine Learning on Dispatcher Recognition of Out-of-Hospital Cardiac Arrest During Calls to Emergency Medical Services: A Randomized Clinical Trial

    Blomberg, S. N., Christensen, Helle Collatz, Lippert, F., Ersbøll, A. K., Torp-Pedersen, Christian, Sayre, M. R., Kudenchuk, P. J. & Folke, Fredrik, 2021, In: JAMA Network Open. 4, 1, p. e2032320

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. Published

    Reply letter to “Machine learning as a supportive tool to recognize cardiac arrest in emergency calls”

    Blomberg, S. N., Folke, Fredrik, Ersbøll, A. K., Christensen, Helle Collatz, Torp-Pedersen, C., Sayre, M. R., Counts, C. R. & Lippert, F. K., 2019, In: Resuscitation. 144, p. 205-206 2 p.

    Research output: Contribution to journal › Comment/debate › Research

  10. Published

    Injury from electric scooters in Copenhagen: A retrospective cohort study

    Blomberg, S. N. F., Rosenkrantz, O. C. M., Lippert, F. & Christensen, Helle Collatz, Dec 2019, In: BMJ Open. 9, 12, 8 p., e033988.

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. Published

    Characteristics and critical care interventions in drowning patients treated by the Danish Air Ambulance from 2016 to 2021: a nationwide registry-based study with 30-day follow-up

    Breindahl, N., Wolthers, S. A., Møller, T. P., Blomberg, S. N. F., Steinmetz, Jacob & Christensen, Helle Collatz, 2024, In: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. 32, 11 p., 17.

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. Published

    Evaluation of a critical incident management system on mental health in lifeguard organisations: A retrospective study

    Breindahl, N., Strange, K. F., Østergaard, Doris & Christensen, Helle Collatz, 2023, In: BMJ Open Sport and Exercise Medicine. 9, 1, e001499.

    Research output: Contribution to journal › Journal article › Research › peer-review

  13. Published

    Danish Drowning Formula for identification of out-of-hospital cardiac arrest from drowning

    Breindahl, N., Wolthers, S. A., Jensen, T. W., Holgersen, M. G., Blomberg, S. N. F., Steinmetz, Jacob, Christensen, Helle Collatz & the Danish Cardiac Arrest Group, T. D. C. A. G., 2023, In: American Journal of Emergency Medicine. 73, p. 55-62 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    Household Exposure to Severe Acute Respiratory Syndrome Coronavirus 2 and Association With Coronavirus Disease 2019 Severity: A Danish Nationwide Cohort Study

    Broccia, M., de Knegt, Victoria Elizabeth, Mills, E. H. A., Møller, Amalie Lykkemark, Gnesin, F., Fischer, Thea Kølsen, Zylyftari, N., Blomberg, S. N., Andersen, M. P., Schou, Morten, Fosbøl, E., Kragholm, K., Christensen, Helle Collatz, Polcwiartek, L. B., Phelps, M., Køber, L. & Torp-Pedersen, Christian, 2022, In: Clinical infectious diseases : an official publication of the Infectious Diseases Society of America. 74, 1, p. 1-7 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  15. Published

    Prediction model for future OHCAs based on geospatial and demographic data: An observational study

    Bundgaard Ringgren, K., Ung, V., Gerds, Thomas Alexander, Kragholm, K. H., Ascanius Jacobsen, P., Lyng Lindgren, F., Grabmayr, A. J., Christensen, Helle Collatz, Mills, E. H. A., Kollander Jakobsen, L., Yonis, H., Hansen, Carolina Malta, Folke, Fredrik, Lippert, F. & Torp-Pedersen, Christian, 2024, In: Medicine (United States). 103, 19, 6 p., E38070.

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Published

    Behavioral factors associated with SARS-CoV-2 infection

    Cajar, M. D., Tan, F. C. C., Boisen, M. K., Krog, S. M., Nolsoee, R., Christensen, Helle Collatz, Andersen, M. P., Moeller, A. L., Gerds, Thomas Alexander, Pedersen-Bjergaard, Ulrik, Lindegaard, Birgitte, Kristensen, Peter Lommer, Christensen, T. B., Torp-Pedersen, Christian & Lendorf, M. E., 2022, In: BMJ Open. 12, 6

    Research output: Contribution to journal › Journal article › Research › peer-review

  17. Published

    AED applied, not recommending defibrillation – A validation study of the new variable AED in the Danish Cardiac Arrest Registry

    Casarini, E., Wolthers, S. A., Ringgren, K. B., Blomberg, S. N. F. & Christensen, Helle Collatz, 2023, In: Resuscitation. 186, 109725.

    Research output: Contribution to journal › Journal article › Research › peer-review

  18. Published

    Endoskopisk transduodenal fjernelse af galdeblæresten hos patient med nekrotiserende pankreatitis

    Christensen, Helle Collatz, Novovic, Srdan, Karstensen, John Gásdal, Lauritsen, Morten Laksáfoss & Schmidt, P. N., 2022, In: Ugeskrift for Laeger. 184, 40, 3 p., V04220266.

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. Published

    Does an emergency access button increase the patients' satisfaction and feeling of safety with the out-of-hours health services? A randomised controlled trial in Denmark

    Ebert, J. F., Huibers, L., Christensen, B., Christensen, Helle Collatz & Christensen, M. B., 2020, In: BMJ Open. 10, 9, e030267.

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    cSocioeconomic Disparities in Prehospital Emergency Care in a Danish Tax-Financed Healthcare System: Nationwide Cohort Study

    Frydenlund, J., Mackenhauer, J., Christensen, E. F., Christensen, Helle Collatz, Væggemose, U., Steinmetz, Jacob & Johnsen, S. P., 2022, In: Clinical Epidemiology. 14, p. 555-565 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  21. Published

    Bystander interventions and survival following out-of-hospital cardiac arrest at Copenhagen International Airport

    Gantzel Nielsen, C., Andelius, L. C., Hansen, C. M., Blomberg, S. N. F., Christensen, Helle Collatz, Kjølbye, J. S., Tofte Gregers, M. C., Ringgren, K. B. & Folke, Fredrik, May 2021, In: Resuscitation. 162, p. 381-387 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. Published

    Rapid dispatch for out-of-hospital cardiac arrest is associated with improved survival

    Gnesin, F., Møller, A. L., Mills, E. H. A., Zylyftari, N., Jensen, B., Bøggild, H., Ringgren, K. B., Blomberg, S. N. F., Christensen, Helle Collatz, Kragholm, K., Lippert, F., Folke, Fredrik & Torp-Pedersen, Christian, Jun 2021, In: Resuscitation. 163, p. 176-183 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    Symptoms reported in calls to emergency medical services within 24 hours prior to out-of-hospital cardiac arrest

    Gnesin, Filip Jurijevitj, Mills, E. H. A., Jensen, B., Møller, Amalie Lykkemark, Zylyftari, N., Bøggild, H., Ringgren, K. B., Kragholm, K., Blomberg, S. N. F., Christensen, Helle Collatz, Lippert, F., Køber, Lars Valeur, Folke, Fredrik & Torp-Pedersen, Christian, 2022, In: Resuscitation. 181, p. 86-96 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    Communication quality in telephone triage conducted by general practitioners, nurses or physicians: a quasi-experimental study using the AQTT to assess audio-recorded telephone calls to out-of-hours primary care in Denmark

    Graversen, D. S., Huibers, L., Christensen, M. B., Bro, F., Christensen, Helle Collatz, Vestergaard, C. H. & Pedersen, A. F., 26 Mar 2020, In: BMJ Open. 10, 3, 12 p., e033528.

    Research output: Contribution to journal › Journal article › Research › peer-review

  25. Published

    Activation of Citizen Responders to Out-of-Hospital Cardiac Arrest During the COVID-19 Outbreak in Denmark 2020

    Gregers, M. C. T., Andelius, L., Hansen, C. M., Kragh, A. R., Torp-Pedersen, Christian, Christensen, Helle Collatz, Kjoelbye, J. S., Vaeggemose, U., Christensen, E. F. & Folke, Fredrik, 2022, In: Journal of the American Heart Association. 11, 6, 14 p., 024140.

    Research output: Contribution to journal › Journal article › Research › peer-review

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ID: 22768155