Volkert Dirk Siersma

Volkert Dirk Siersma

!!Statistiker, External Lecturer

ORCID: 0000-0003-1941-2681

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  1. Published

    What is a PROM and why do we need it? Article 1 in a series of 10

    Krogsgaard, Michael R., Brodersen, John Brandt, Christensen, Karl Bang, Siersma, Volkert Dirk, Kreiner, Svend, Jensen, J., Hansen, C. F. & Comins, J. D., 2021, In: Scandinavian Journal of Medicine and Science in Sports. 31, 5, p. 967-971 5 p.

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

  2. Published

    What fraction of women with false-positive screening mammography results reported a higher score than women with normal screening results?

    Brodersen, John Brandt & Siersma, Volkert Dirk, 2013, In: Annals of Family Medicine.

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

  3. Published

    What factors are most important for the development of the maternal-fetal relationship? A prospective study among pregnant women in Danish general practice

    Ertmann, Ruth Kirk, Bang, C. W., Kriegbaum, Margit, Væver, Mette Skovgaard, Kragstrup, Jakob, Siersma, Volkert Dirk, Wilson, Philip Michael John, Lutterodt, Melissa C. & Smith-Nielsen, Johanne, 2021, In: BMC Psychology. 9, 1, 9 p., 2.

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

  4. Published

    Weight history of patients with newly diagnosed Type 2 diabetes

    Olivarius, N. D. F., Richelsen, B., Siersma, Volkert Dirk, Andreasen, A. H. & Beck-Nielsen, H., 2008, In: Diabetic Medicine. 25, 8, p. 933-41 8 p.

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

  5. Published

    Weight change og change in weight trend. Differences in analytical approaches

    Olivarius, Niels de Fine & Siersma, Volkert Dirk, 2007, In: Diabetes, Obesity and Metabolism. 9, p. 915-916 1 p.

    Research output: Contribution to journal › Letter › Research › peer-review

  6. Published

    Weight Changes following the Diagnosis of Type 2 Diabetes: The Impact of Recent and Past Weight History before Diagnosis. Results from the Danish Diabetes Care in General Practice (DCGP) Study

    Olivarius, Niels de Fine, Siersma, Volkert Dirk, Køster-Rasmussen, Rasmus, Heitmann, Berit & Waldorff, Frans Boch, 15 Apr 2015, In: P L o S One. 10, 4, p. 1-14 14 p., e0122219.

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

  7. Published

    Waiting time and the psychosocial consequences of false-positive mammography: cohort study.

    Heleno, B. M., Siersma, Volkert Dirk & Brodersen, John Brandt, 30 Apr 2015, In: Journal of Negative Results in BioMedicine. 14, 8, p. 1-4 4 p.

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

  8. Published

    Vægtforløbet og betydningen af antidiabetisk behandling de første fem år efter diabetesdiagnosen - sekundærpublikation

    Olivarius, Niels de Fine, Andreasen, A. H., Siersma, Volkert Dirk, Richelsen, B. & Beck-Nielsen, H., 2006, In: Ugeskrift for læger. 168/45, p. 3913-3916

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

  9. Published

    Visual impairment and mortality in patients with type 2 diabetes

    Siersma, Volkert Dirk, Køster-Rasmussen, Rasmus, Bruun, C., Olivarius, Niels de Fine & Brunes, A., 2019, In: B M J Open Diabetes Research & Care. 7, 1, 9 p., e000638.

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

  10. Published

    Validation of the psychosocial consequences of screening in lung cancer questionnaire in the international lung screen trial Australian cohort

    Bonney, A., Brodersen, John Brandt, Siersma, Volkert Dirk, See, K., Marshall, H. M., Steinfort, D., Irving, L., Lin, L., Li, J., Pang, S., Fogarty, P., Brims, F., McWilliams, A., Stone, E., Lam, S., Fong, K. M. & Manser, R., 2024, In: Health and Quality of Life Outcomes. 22, 1, 13 p., 10.

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

  11. Published

    Vaegtanamnesen for patienter med nyopdaget type 2-diabetes--sekundaerpublikation

    Olivarius, Niels de Fine, Richelsen, B., Siersma, Volkert Dirk, Andreasen, A. H. & Beck-Nielsen, H., 2008, In: Ugeskrift for læger. 170, 45, p. 3640-3 3 p.

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

  12. Published

    Using a Deliberative Poll on breast cancer screening to assess and improve the decision quality of laypeople

    Jensen, Manja Dahl, Hansen, Kasper Møller, Siersma, Volkert Dirk & Brodersen, John Brandt, 2021, In: PLoS ONE. 16, 10 , 21 p., e0258869.

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

  13. Published

    Use of online material in teaching general practice: Brug af online material i undervisningen i almen medicin

    Jørgensen, Merete, Witt, K., Mäkelä, Marjukka, Siersma, Volkert Dirk & Bang, C. W., 2022, In: Læring og Medier. 14, 24, 20 p.

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

  14. Published

    Use of diagnostic tests and the appropriateness of the treatment decision in patients with suspected urinary tract infection in primary care in Denmark - Observational study

    Cordoba Currea, Gloria Cristina, Holm, Anne, Sørensen, Tina Møller, Siersma, Volkert Dirk, Sandholdt, H., Makela, M., Frimodt-Møller, N. & Bjerrum, Lars, 2018, In: BMC Family Practice. 19, 1, 7 p., 65.

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

  15. Published

    Use and diagnostic outcomes of cancer patient pathways in Denmark - is the place of initial diagnostic work-up an important factor?

    Damhus, Christina Sadolin, Siersma, Volkert Dirk, Birkmose, Anna Rubach, Dalton, Susanne Oksbjerg & Brodersen, John Brandt, 2022, In: BMC Health Services Research. 22, 1, 12 p., 130.

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

  16. Published

    Urinary markers of nucleic acid oxidation and long-term mortality of newly diagnosed type 2 diabetic patients

    Broedbaek, K., Siersma, Volkert Dirk, Henriksen, T., Weimann, A., Petersen, M., Andersen, J. T., Jimenez-Solem, E., Stovgaard, E. S., Hansen, Lars J, Henriksen, J. E., Bonnema, S. J., Olivarius, Niels de Fine & Poulsen, H. E., 2011, In: Diabetes Care. 34, 12, p. 2594-2596 3 p.

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

  17. Published

    Urinary markers of nucleic acid oxidation and cancer in type 2 diabetes

    Broedbaek, K., Siersma, Volkert Dirk, Henriksen, T. F., Weimann, A., Petersen, M., Andersen, J. T., Solem, E. V. J., Hansen, Lars J, Henriksen, J. E., Bonnema, S. J., Olivarius, Niels de Fine, Friis, S. & Poulsen, Henrik Enghusen, Apr 2015, In: Redox Biology. 4, p. 34-39 6 p.

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

  18. Published

    Urinary albumin and 8-oxo-7,8-dihydroguanosine as markers of mortality and cardiovascular disease during 19 years after diagnosis of type 2 diabetes: A comparative study of two markers to identify high risk patients

    Broedbaek, K., Køster-Rasmussen, Rasmus, Siersma, Volkert Dirk, Persson, F., Poulsen, Henrik Enghusen & Olivarius, Niels de Fine, Oct 2017, In: Redox Biology. 13, p. 363-369 7 p.

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

  19. Published

    Uptake of signposting to web-based resources: pregnant women’s use of a preventive web-based intervention

    Sørensen, E. R., Rasmussen, Ida Scheel, Overbeck, Gritt, Siersma, Volkert Dirk, Appel, Clara Lundmark & Wilson, Philip Michael John, 2023, In: BMC Primary Care. 24, 11 p., 189.

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

  20. Published

    Trend in antibiotic prescription to children aged 0-6 years old in the capital region of Denmark between 2009 and 2018: Differences between municipalities and association with socioeconomic composition

    Larsen, S. B., Jensen, Maria Louise Veimer, Bjerrum, Lars, Siersma, Volkert Dirk, Bang, C. W. & Jensen, J. N., 2021, In: The European Journal of General Practice. 27, 1, p. 257-263 7 p.

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

  21. Published

    Treatment of opioid overdose in a physician-based prehospital EMS: Frequency and long-term prognosis

    Nielsen, K., Nielsen, S. L., Siersma, Volkert Dirk & Rasmussen, L. S., 2011, In: Resuscitation. 82, 11, p. 1410-1413 4 p.

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

  22. Published

    To allow or avoid pain during shoulder rehabilitation exercises for patients with chronic rotator cuff tendinopathy-Study protocol for a randomized controlled trial (the PASE trial)

    Kjær, B. H., Cools, A. M., Johannsen, F. E., Trøstrup, J., Bieler, T., Siersma, Volkert Dirk & Magnusson, Stig Peter, 2024, In: Trials. 25, 1, 19 p., 135.

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

  23. Published

    The role of the anterolateral ligament in ACL insufficient and reconstructed knees on rotary stability: A biomechanical study on human cadavers

    Tavlo, M., Eljaja, S., Tranum-Jensen, Jørgen, Siersma, Volkert Dirk & Krogsgaard, Michael R., Aug 2016, In: Scandinavian Journal of Medicine & Science in Sports. 26, 8, p. 960-966

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

  24. Published

    The role of physical and cognitive function in performance of activities of daily living in patients with mild-to-moderate Alzheimer’s disease – a cross-sectional study

    Clemmensen, F. K., Hoffmann, K., Siersma, Volkert Dirk, Sobol, N., Beyer, N., Andersen, B. B., Vogel, A., Lolk, A., Gottrup, H., Høgh, Peter, Waldemar, Gunhild, Hasselbalch, Steen & Frederiksen, K. S., 2020, In: BMC Geriatrics. 20, 1, 9 p., 513.

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

  25. Published

    The risk of fall accidents for home dwellers with dementia—A register- and population-based case-control study

    Petersen, Jindong Ding, Siersma, Volkert Dirk, Christensen, R. D. P., Storsveen, M. M., Nielsen, C. T. & Waldorff, Frans Boch, 2018, In: Alzheimer's and Dementia: Diagnosis, Assessment and Disease Monitoring. 10, p. 421-428 8 p.

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

  26. Published

    The risk of bleeding and perforation from sigmoidoscopy or colonoscopy in colorectal cancer screening: A systematic review and meta-analyses

    Kindt, I. S., Martiny, Frederik Handberg Juul, Gram, Emma Grundtvig, Bie, A. K. L., Jauernik, Christian Patrick, Rahbek, O. J., Nielsen, S. B., Siersma, Volkert Dirk, Bang, C. W. & Brodersen, John Brandt, 2023, In: PLoS ONE. 18, 10, 17 p., e0292797.

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

  27. Published

    The relationship between HbA(1c) level, symptoms and self-rated health in type 2 diabetic patients

    Nielsen, Anni Brit Sternhagen, Gannik, D. E., Siersma, Volkert Dirk & Olivarius, Niels de Fine, Sep 2011, In: Scandinavian Journal of Primary Health Care. 29, 3, p. 157-164 8 p.

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

  28. Published

    The predictive value of self-rated health in the presence of subjective memory complaints on permanent nursing home placement in elderly primary care patients over 4-year follow-up.

    Nielsen, Anni Brit Sternhagen, Siersma, Volkert Dirk, Waldemar, Gunhild & Waldorff, Frans Boch, 2013, In: Age and Ageing. 43, 1, p. 50-57

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

  29. Published

    The predictive value of common symptoms in early pregnancy for complications later in pregnancy and at birth

    Ertmann, Ruth Kirk, Nicolaisdottir, Dagny Ros, Kragstrup, Jakob, Overbeck, Gritt, Kriegbaum, Margit & Siersma, Volkert Dirk, 2023, In: Acta Obstetricia et Gynecologica Scandinavica. 102, 1, p. 33-42 10 p.

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

  30. Published

    The majority of sick children receive paracetamol during the winter

    Ertmann, Ruth Kirk, Møller, J. J., Waldorff, Frans Boch, Siersma, Volkert Dirk, Reventlow, Susanne & Söderström, M., 2012, In: Danish Medical Journal. 59, 12, p. A4555

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

  31. Published

    The long-term psychosocial impact of screen-detected DCIS – further support to rename DCIS

    Gram, Emma Grundtvig, Siersma, Volkert Dirk & Brodersen, John Brandt, 2023, In: BMJ Evidence-Based Medicine. 28, Supplement 1

    Research output: Contribution to journal › Conference abstract in journal › Research

  32. Published

    The long-term psychosocial consequences of screen-detected ductal carcinoma in situ and invasive breast cancer

    Gram, Emma Grundtvig, Manso, T. F. R., Heleno, B., Siersma, Volkert Dirk, Rogvi, J. Á. & Brodersen, John Brandt, 2023, In: The Breast. 70, p. 41-48 8 p.

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

  33. Published

    The importance of factors determining the low health-related quality of life in people presenting with a diabetic foot ulcer – the Eurodiale study.

    Siersma, Volkert Dirk, Thorsen, H., Holstein, P., Kars, M., Apelqvist, J., Jude, E., Piagessi, A., Bakker, K., Edmonds, M., Jirkovska, A., Mauricio, D., Tennvall, G., Reike, H., Spraul, M., Uccioli, L., Urbancic, V., Acker, K., Baal, J. & Schaper, N., 2013, In: Diabetic Medicine. 30, 11, p. 1382-1387

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

  34. Published

    The implications of mammography screening on health care use and its associated financial costs

    Gram, Emma Grundtvig, Siersma, Volkert Dirk, Nicolaisdottir, Dagny Ros & Brodersen, John Brandt, 2023, 1 p.

    Research output: Working paper › Research

  35. Published

    The impact of patients' involvement in cooking on their mortality and morbidity: A 19-year follow-up of patients newly diagnosed with type 2 diabetes mellitus.

    Jandorf, S., Siersma, Volkert Dirk, Køster-Rasmussen, Rasmus, Olivarius, Niels de Fine & Waldorff, Frans Boch, 2015, In: Scandinavian Journal of Primary Health Care. 33, 1, p. 33-39 7 p.

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

  36. Published

    The impact of influences in a medical screening programme invitation: a randomized controlled trial

    Jauernik, Christian Patrick, Rahbek, O. J., Ploug, T., Siersma, Volkert Dirk & Brodersen, John Brandt, 2023, In: European Journal of Public Health. 33, 3, 6 p.

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

  37. Published

    The impact of gender on the long-term morbidity and mortality of patients with type 2 diabetes receiving structured personal care: A 13-year follow-up study

    Krag, M. Ø., Hasselbalch, L., Siersma, Volkert Dirk, Nielsen, Anni Brit Sternhagen, Reventlow, Susanne, Malterud, Kirsti & Olivarius, Niels de Fine, Feb 2016, In: Diabetologia. 59, 2, p. 275-285 11 p.

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

  38. Published

    The impact of changes in self-rated general health on 28-year mortality among middle-aged Danes

    Nielsen, Anni Brit Sternhagen, Siersma, Volkert Dirk, Kreiner, Svend, Hiort, L. C., Drivsholm, Thomas, Eplov, L. F. & Hollnagel, Hanne, 2009, In: Scandinavian Journal of Primary Health Care. 27, 3, p. 160-166 7 p.

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

  39. Published

    The impact of cancer on diabetes outcomes

    Arreskov, Anne Beiter, Olsen, M. Å., Pouplier, S. S., Siersma, Volkert Dirk, Andersen, Christen Bertel L, Friis, S. & Olivarius, Niels de Fine, 2019, In: BMC Endocrine Disorders. 19, 9 p., 60.

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

  40. Published

    The impact of a physician-staffed helicopter on outcome in patients admitted to a stroke unit: a prospective observational study

    Funder, K. S., Rasmussen, L. S., Lohse, N., Hesselfeldt, R., Siersma, Volkert Dirk, Gyllenborg, J., Wulffeld, S., Hendriksen, O. M., Lippert, F. K. & Steinmetz, Jacob, 23 Feb 2017, In: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. 25, p. 1-9 9 p., 18.

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

  41. Published

    The impact of HPV vaccination on future cervical screening: a simulation study of two birth cohorts in Denmark

    Hestbech, Mie Sara, Lynge, Elsebeth, Kragstrup, Jakob, Siersma, Volkert Dirk, Vazquez-Prada Baillet, M. & Brodersen, John Brandt, 14 Aug 2015, In: B M J Open. 5, 8, p. 1-7 7 p., e007921.

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

  42. Published

    The feasibility of C-reactive protein point-of-care testing to reduce overuse of antibiotics in children with acute respiratory tract infections in rural Kyrgyzstan: A Pilot Study

    Isaeva, E., Akylbekov, A., Bloch, J., Poulsen, A., Kurtzhals, Jørgen, Siersma, Volkert Dirk, Sooronbaev, T., Aabenhus, Rune Munck & Kjærgaard, J., 2024, In: Pediatric health, medicine and therapeutics. 15, p. 67-76 10 p.

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

  43. Published

    The excess mortality of patients with diabetes and concurrent psychiatric illness is markedly reduced by structured personal diabetes care. A 19-year follow up of the randomized controlled study Diabetes Care in General Practice (DCGP).

    Larsen, J. R., Siersma, Volkert Dirk, Davidsen, Annette Sofie, Waldorff, Frans Boch, Reventlow, Susanne & Olivarius, Niels de Fine, 2016, In: General Hospital Psychiatry. 38, p. 42-52 11 p.

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

  44. Published

    The efficacy of computer reminders on external quality assessment for point-of-care testing in Danish general practice: rationale and methodology for two randomized trials

    Waldorff, Frans Boch, Siersma, Volkert Dirk, Ertmann, Ruth Kirk, Kousgaard, Marius Brostrøm, Nielsen, A. S., Felding, P., Mosbæk, N., Hjortsø, E. & Reventlow, Susanne, 1 Jan 2011, In: Implementation Science. 6, p. 79

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

  45. Published

    The efficacy of acupuncture on menopausal symptoms (ACOM study): protocol for a randomised study

    Lund, K. S., Brodersen, John Brandt, Siersma, Volkert Dirk & Waldorff, Frans Boch, Mar 2017, In: Danish Medical Journal. 64, 3, p. 1-6 6 p., A5344.

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

  46. Published

    The effectiveness of structured personal care of type 2 diabetes on recurrent outcomes: a 19 year follow-up of the study Diabetes Care in General Practice (DCGP)

    Lundström, H. M., Siersma, Volkert Dirk, Nielsen, Anni Brit Sternhagen, Brodersen, John Brandt, Reventlow, Susanne, Andersen, Per Kragh & Olivarius, Niels de Fine, Jun 2014, In: Diabetologia. 57, 6, p. 1119-23 5 p.

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

  47. Published

    The effectiveness of computer reminders versus postal reminders for improving quality assessment for point-of-care testing in primary care: a randomized controlled trial

    Siersma, Volkert Dirk, Kousgaard, Marius Brostrøm, Reventlow, Susanne, Ertmann, Ruth Kirk, Felding, P. & Waldorff, Frans Boch, Feb 2015, In: Journal of Evaluation in Clinical Practice. 21, 1, p. 13-20 8 p.

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

  48. Published

    The effectiveness of computer reminders for improving quality assessment for point-of-care testing in general practice - a randomized controlled trial.

    Kousgaard, Marius Brostrøm, Siersma, Volkert Dirk, Reventlow, Susanne, Ertmann, Ruth Kirk, Felding, P. & Waldorff, Frans Boch, 2013, In: Implementation Science. 8, 47

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

  49. Published

    The effectiveness of a semi-tailored facilitator-based intervention to optimise chronic care management in general practice: A randomised controlled trial

    Due, Tina Drud, Thorsen, Thorkil, Kousgaard, Marius Brostrøm, Siersma, Volkert Dirk & Waldorff, Frans Boch, 2014, In: BMC Family Practice. 15, p. 1-12 12 p., 65.

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

  50. Published

    The effect of structured personal care on diabetes symptoms and self-rated health over 14 years after diabetes diagnosis

    Willadsen, Tora Grauers, Siersma, Volkert Dirk, Nielsen, Anni Brit Sternhagen, Køster-Rasmussen, Rasmus, Guassora, Ann Dorrit, Jarbol, D. E., Eusebi, P., Malterud, Kirsti, Reventlow, Susanne & Olivarius, Niels de Fine, 2018, In: Primary Care Diabetes. 12, 4, p. 354-363 10 p.

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

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ID: 3512987