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

  51. Published

    The effect of structured personal care on RNA oxidation: A 19-year follow-up of the randomized trial Diabetes Care in General Practice (DCGP)

    Kjær, L. K., Grand, Mia Klinten, Siersma, Volkert Dirk, Brødbæk, K., Jørgensen, Anders, Olivarius, Niels de Fine & Poulsen, Henrik Enghusen, 2019, In: Journal of Diabetes and its Complications. 33, 3, p. 202-207

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

  52. Published

    The effect of reminder letters on the uptake of an e-learning programme on dementia: a randomized trial in general practice

    Waldorff, Frans Boch, Siersma, Volkert Dirk, Nielsen, B., Steenstrup, A. P. & Bro, F., 2009, In: Family Practice. 26, 6, p. 466-471 6 p.

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

  53. Published

    The effect of disease onset chronology on mortality among patients with multimorbidity: A Danish nationwide register study

    Willadsen, Tora Grauers, Siersma, Volkert Dirk, Nicolaisdottir, Dagny Ros, Køster-Rasmussen, Rasmus, Reventlow, Susanne & Rozing, Maarten Pieter, 2022, In: J Multimorb Comorb .. 12, 10 p.

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

  54. Published

    The development of type 2 diabetes management in people with severe mental illness in the Capital Region of Denmark from 2001 to 2015

    Bakkedal, Catrine, Persson, F., Christensen, Mikkel Bring, Kriegbaum, Margit, Mohr, G. H., Andersen, John Sahl, Lind, B. S., Lykkegaard, C., Siersma, Volkert Dirk & Rozing, Maarten Pieter, 2024, In: Acta Psychiatrica Scandinavica. 149, 3, p. 219-233 15 p.

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

  55. Published

    The development of multimorbidity during 16 years after diagnosis of type 2 diabetes

    Pouplier, S., Olsen, M. Å., Willadsen, Tora Grauers, Sandholdt, H., Siersma, Volkert Dirk, Andersen, Christen Bertel L & Olivarius, Niels de Fine, 2018, In: Journal of Comorbidity. 8, 1, p. 1-9 9 p.

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

  56. Published

    The development and validation of a multidimensional sum-scaling questionnaire to measure patient-reported outcomes in acute respiratory tract infections in primary care: the Acute Respiratory Tract Infection Questionnaire: ARTIQ

    Aabenhus, Rune Munck, Thorsen, Hanne, Siersma, Volkert Dirk & Brodersen, John Brandt, 2013, In: Value in Health. 16, p. 987-992 6 p.

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

  57. Published

    The association of a past childbirth experience with a variety of early physical and mental symptoms in subsequent pregnancies

    Davidsen, A. S., Birkmose, Anna Rubach, Kragstrup, Jakob, Siersma, Volkert Dirk & Ertmann, Ruth Kirk, 2022, In: Midwifery. 112, 7 p., 103406.

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

  58. Published

    The SOFIA pilot trial: a cluster-randomized trial of coordinated, co-produced care to reduce mortality and improve quality of life in people with severe mental illness in the general practice setting

    Rozing, Maarten Pieter, Jønsson, Alexandra Brandt Ryborg, Køster-Rasmussen, Rasmus, Due, Tina Drud, Brodersen, John Brandt, Bissenbakker, Kristine Henderson, Siersma, Volkert Dirk, Mercer, S. W., Guassora, Ann Dorrit, Kjellberg, J., Kjellberg, P. K., Nielsen, Maria Haahr, Christensen, I., Bardram, J. E., Martiny, Frederik Handberg Juul, Møller, Anne, Reventlow, Susanne & SOFIA Study Grp, S. S. G., 2021, In: Pilot and Feasibility Studies. 7, 1, 13 p., 168.

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

  59. Published

    The SOFIA pilot study: assessing feasibility and fidelity of coordinated care to reduce excess mortality and increase quality of life in patients with severe mental illness in a general practice setting; a cluster-randomised pilot trial

    Jensen, Katrine Tranberg, Jønsson, Alexandra Brandt Ryborg, Due, Tina Drud, Siersma, Volkert Dirk, Brodersen, John Brandt, Bissenbakker, Kristine Henderson, Martiny, Frederik Handberg Juul, Davidsen, Annette Sofie, Kjellberg, P. K., Doherty, K., Mercer, S. W., Nielsen, Maria Haahr, Reventlow, Susanne, Møller, Anne, Rozing, M. & SOFIA Study Group, S. S. G., 2023, In: BMC Primary Care. 24, 1, 11 p., 188.

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

  60. Published

    The Potential of The Copenhagen Primary Care Laboratory (CopLab) Database

    Andersen, Christen Bertel L, Siersma, Volkert Dirk & Olivarius, Niels de Fine, 2016.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  61. Published

    The Effect of Economic Assets on Mortality in Patients with Dementia: A Population-Based Cohort Study

    Bebe, Anna, Siersma, Volkert Dirk, Kragstrup, Jakob, Nielsen, Anni Brit Sternhagen, Møller, Anne, Søndergaard, J., Nicolaisdottir, Dagny Ros & Waldorff, Frans Boch, 2019, In: Journal of Alzheimer's Disease. 67, 4, p. 1245-1253 10 p.

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

  62. Published

    The Diagnostic and Prognostic Value of a Dual-Tasking Paradigm in a Memory Clinic

    Nielsen, M. S., Simonsen, A. H., Siersma, Volkert Dirk, Hasselbalch, Steen & Høgh, Peter, 2018, In: Journal of Alzheimer's Disease. 61, 3, p. 1189-1199 11 p.

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

  63. Published

    The Danish contribution to the European DEMOCOPHES project: A description of cadmium, cotinine and mercury levels in Danish mother-child pairs and the perspectives of supplementary sampling and measurements

    Mørck, T. A., Nielsen, F., Nielsen, J. K. S., Jensen, J. F., Hansen, P. W., Hansen, A. K., Christoffersen, L. A. N., Siersma, V. D., Larsen, I. H., Hohlmann, L. K., Skaanild, M. T., Frederiksen, H., Biot, P., Casteleyn, L., Kolossa-Gehring, M., Schwedler, G., Castaño, A., Angerer, J., Koch, H. M., Esteban, M. & 12 others, Schoeters, G., Den Hond, E., Exley, K., Sepai, O., Bloemen, L., Joas, R., Joas, A., Fiddicke, U., Lopez, A., Cañas, A., Aerts, D. & Knudsen, Lisbeth E., Aug 2015, In: Environmental Research. 141, p. 96-105 10 p.

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

  64. Published

    The Danish Alzheimer intervention study: rationale, study design and baseline characteristics of the cohort

    Waldemar, Gunhild, Waldorff, Frans Boch, Buss, D. V., Eckermann, A., Keiding, N., Rishøj, S., Siersma, Volkert Dirk, Sørensen, J., Sørensen, L. V. & Vogel, A., 1 Jan 2011, In: Neuroepidemiology. 36, 1, p. 52-61 10 p.

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

  65. Published

    The Danish Alzheimer Intervention Study: Rationale, Study Design and Baseline Characteristics of the Cohort

    Waldemar, Gunhild, Waldorff, Frans Boch, Buss, D. V., Eckermann, A., Keiding, N., Rish›j, S., Siersma, Volkert Dirk, S›rensen, J., S›rensen, L. V. & Vogel, A., 2011, In: Neuroepidemiology. 36, 1, p. 52-61 10 p.

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

  66. Published

    The Copenhagen primary care differential count (CopDiff) database

    Andersen, Christen Bertel L, Siersma, Volkert Dirk, Karlslund, W., Hasselbalch, H. C., Felding, P., Bjerrum, O. W. & Olivarius, Niels de Fine, 2014, In: Clinical Epidemiology. 6, p. 199-211 13 p.

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

  67. Published

    The Astonishing Hypothesis (Letter)

    Olivarius, Niels de Fine & Siersma, Volkert Dirk, 2012, In: Primary Care Diabetes.

    Research output: Contribution to journal › Letter › Research

  68. Published

    Symptoms, signs and complications in newly diagnosed type 2 diabetic patients, and their relationship to glycaemia, blood pressure and weight

    Drivsholm, Thomas, Olivarius, Niels de Fine, Nielsen, Anni Brit Sternhagen & Siersma, Volkert Dirk, 2005, In: Diabetologia. 48, p. 210-214

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

  69. Published

    Symptom-based screening tool for asthma syndrome among young children in Uganda

    Nantanda, R., Siersma, Volkert Dirk, Ndeezi, G., Tumwine, J. K. & Ostergaard, M. S., 2020, In: Primary Care Respiratory Journal. 30, 6 p., 30.

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

  70. Published

    Symptom burden in multimorbidity: A population-based combined questionnaire and registry study from Denmark

    Willadsen, Tora Grauers, Siersma, Volkert Dirk, Nicolaisdottir, Dagny Ros, Jarbol, D., Guassora, Ann Dorrit, Reventlow, Susanne & Køster-Rasmussen, Rasmus, 2021, In: BMJ Open. 11, 4, e041877.

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

  71. Published

    Sustained effects of a brief and standardised acupuncture approach on menopausal symptoms: post hoc analysis of the ACOM randomised controlled trial

    Lund, K. S., Siersma, Volkert Dirk, Bang, C. W., Brodersen, John Brandt & Waldorff, Frans Boch, 2020, In: Acupuncture in Medicine. 38, 6, p. 396-406 11 p.

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

  72. Published

    Subjective memory complaints in primary care patients and death from all causes: a four-year follow-up

    Siersma, Volkert Dirk, Waldemar, Gunhild & Waldorff, Frans Boch, Mar 2013, In: Scandinavian Journal of Primary Health Care. 31, 1, p. 7-12

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

  73. Published

    Subjective memory complaints in general practice predicts future dementia: a 4-year follow-up study.

    Waldorff, Frans Boch, Vogel, Asmus, Siersma, Volkert Dirk & Waldemar, Gunhild, 2012, In: International Journal of Geriatric Psychiatry. 27, 11, p. 1180-1188 8 p.

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

  74. Published

    Subjective memory complaints and future depression in primary care patients: A four-year follow-up study

    Quaade, A. S., Davidsen, Annette Sofie, Siersma, Volkert Dirk, Waldemar, Gunhild & Waldorff, Frans Boch, 1 Nov 2018, In: General Hospital Psychiatry. 55, p. 4-9 6 p.

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

  75. Published

    Studies in the interactions between disease development and interventions

    Siersma, Volkert Dirk, 2008, Museum Tusculanum.

    Research output: Book/Report › Ph.D. thesis › Research

  76. Published

    Studies in the interaction between disease development and interventions

    Siersma, Volkert Dirk, 2008, In: Maanedsskrift for Praktisk Laegegerning. p. -

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

  77. Published

    Structured personal care of type 2 diabetes: a 19 year follow-up of the study Diabetes Care in General Practice (DCGP).

    Hansen, Lars J, Siersma, Volkert Dirk, Beck-Nielsen, H. & Olivarius, Niels de Fine, 2013, In: Diabetologia. 56, 6, p. 1243-1253

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

  78. Published

    Structural and cognitive correlates of fatigue in progressive multiple sclerosis

    Andreasen, A. K., Iversen, P., Marstrand, L., Siersma, Volkert Dirk, Siebner, Hartwig Roman & Sellebjerg, Finn Thorup, 2019, In: Neurological Research. 41, 2, p. 168-176

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

  79. Published

    Standard complication screening information can be used for risk assessment for first time foot ulcer among patients with type 1 and type 2 diabetes

    Hangaard, S., Rasmussen, A., Almdal, Thomas Peter, Nielsen, A. A., Nielsen, K. E., Siersma, Volkert Dirk & Holstein, P., 2019, In: Diabetes Research and Clinical Practice. 151, p. 177-186 10 p.

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

  80. Published

    Spending time outside to reduce infections at preschool may be an overrated strategy

    Söderström, M., Siersma, Volkert Dirk & Boldemann, C., 2018, In: Acta Paediatrica. 107, 9, p. 1652 1 p.

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

  81. Published

    Specific location of ocular adnexal lymphoma and mortality: an international multicentre retrospective study

    Vest, S. D., Coupland, S. E., Esmaeli, B., Finger, P. T., Graue, G. F., Grossniklaus, H. E., Hindso, T. G., Holm, F., Honavar, S. G., Khong, J. J., Kirkegaard, M. K., McKelvie, P. A., Mikkelsen, L. H., Mulay, K., Rasmussen, P. K., Siersma, V., Sjö, L. D., Sniegowski, M. C., Thuro, B. A., Vemuganti, G. K. & 1 others, Heegaard, Steffen, 2023, In: British Journal of Ophthalmology. 107, 9, p. 1231-1238 8 p.

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

  82. Published

    Sociodemographic characterisation of antibiotic heavy users in the Danish elderly population

    Jensen, Maria Louise Veimer, Aabenhus, Rune Munck, Holzknecht, Barbara Juliane, Bjerrum, Lars, Siersma, Volkert Dirk, Cordoba Currea, Gloria Cristina & Jensen, J. N., 2024, In: Scandinavian Journal of Public Health. 52, 1, p. 51-58 8 p.

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

  83. Published

    Socio-economic status in families affected by childhood cataract

    Al-Bakri, M., Bach-Holm, Daniella, Larsen, D. A., Siersma, Volkert Dirk & Kessel, Line, 2022, In: Acta Ophthalmologica. 100, 2, p. 183-188 6 p.

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

  84. Published

    Socio-demographic determinants and effect of structured personal diabetes care: a 19-year follow-up of the randomized controlled study diabetes Care in General Practice (DCGP)

    Heltberg, Andreas Søndergaard, Siersma, Volkert Dirk, Andersen, John Sahl, Ellervik, Christina, Brønnum-Hansen, Henrik, Kragstrup, Jakob & Olivarius, Niels de Fine, 8 Dec 2017, In: B M C Endocrine Disorders. 17, p. 1-11 11 p., 75.

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

  85. Published

    Social-cognitive and school factors in lifetime smoking among adolescents

    Bidstrup, P. E., Frederiksen, K., Siersma, Volkert Dirk, Mortensen, Erik Lykke, Ross, L., Vinther-Larsen, M., Gronbaek, M. & Johansen, C., 2008, In: Cancer Epidemiology, Biomarkers & Prevention. 17, 8, p. 1862-1871 9 p.

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

  86. Published

    Social-cognitive and school factors in initiation of smoking among adolescents: a prospective cohort study

    Bidstrup, P. E., Frederiksen, K., Siersma, Volkert Dirk, Mortensen, Erik Lykke, Ross, L., Vinther-Larsen, M., Grønbæk, M. & Johansen, Christoffer, 2009, In: Cancer Epidemiology, Biomarkers & Prevention. 18, 2, p. 384-92 8 p.

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

  87. Published

    Social relations and leisure activities as predictors of wellbeing among older adults with multiple sclerosis: A cross-sectional survey study in Denmark

    Bergien, Sofie Olsgaard, Siersma, Volkert Dirk, Kristiansen, Maria & Skovgaard, L., 2023, In: Multiple Sclerosis and Related Disorders. 77, 8 p., 104878.

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

  88. Published

    Social relations and contact with general practitioner in a middle-aged Danish population: a prospective register- and survey-based cohort study

    Mikkelsen, A. S. B., Lund, Rikke, Siersma, Volkert Dirk, Jørgensen, Terese Sara Høj, Christensen, Ulla & Kristiansen, Maria, 2022, In: BMC Health Services Research. 22, 481, 481.

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

  89. Published

    Social disparities in diabetes care: a general population study in Denmark

    Heltberg, Andreas Søndergaard, Andersen, John Sahl, Kragstrup, Jakob, Siersma, Volkert Dirk, Sandholdt, H. & Ellervik, Christina, 2017, In: Scandinavian Journal of Primary Health Care. 35, 1, p. 54–63 10 p.

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

  90. Published

    Sleep complaints in early pregnancy. A cross-sectional study among women attending prenatal care in general practice

    Ertmann, Ruth Kirk, Nicolaisdottir, Dagny Ros, Kragstrup, Jakob, Siersma, Volkert Dirk & Lutterodt, Melissa C., 2020, In: B M C Pregnancy and Childbirth. 20, 9 p., 123.

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

  91. Published

    Simulating from graphical models for ordinal categorical data

    Siersma, Volkert Dirk & Kreiner, Svend, 2007, Museum Tusculanum.

    Research output: Book/Report › Report › Research

  92. Published

    Similar cardiovascular risk factor profile in screen-detected and known type 2 diabetic subjects

    Heldgaard, P. E., Henriksen, J. E., Sidelmann, J. J., Olivarius, Niels de Fine, Siersma, Volkert Dirk & Gram, J. B., Jun 2011, In: Scandinavian Journal of Primary Health Care. 29, 2, p. 85-91 7 p.

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

  93. Published

    Short-term practice effects and variability in cognitive testing in a healthy elderly population

    Krenk, L., Rasmussen, L. S., Siersma, Volkert Dirk & Kehlet, Henrik, 2012, In: Experimental Gerontology. 47, 6, p. 432–436 5 p.

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

  94. Published

    Short and long-term psychosocial consequences of participating in a colorectal cancer screening programme: a matched longitudinal study

    Malmqvist, J., Siersma, Volkert Dirk, Hestbech, Mie Sara, Bang, C. W., Nicolaisdottir, Dagny Ros & Brodersen, John Brandt, 2022, In: BMJ Evidence-Based Medicine. 27, 2, 10 p.

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

  95. Published

    Severity and Bothersomeness of Urinary Tract Infection Symptoms in Women before and after Menopause

    Teglbrænder-Bjergkvist, S., Siersma, Volkert Dirk & Holm, Anne, 2023, In: Antibiotics. 12, 7, 9 p.

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

  96. Published

    Self-rated versus Caregiver-rated Health for Patients with Mild Dementia as Predictors of Patient Mortality

    Phung, T. K. T., Siersma, Volkert Dirk, Vogel, Asmus, Waldorff, Frans Boch & Waldemar, Gunhild, 2018, In: American Journal of Geriatric Psychiatry. 26, 3, p. 375-385 11 p.

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

  97. Published

    Self-rated general health among 40-year-old Danes and its association with all-cause mortality at 10-, 20-, and 29 years' follow-up

    Nielsen, Anni Brit Sternhagen, Siersma, Volkert Dirk, Hiort, L. C., Drivsholm, T., Kreiner, Svend & Hollnagel, Hanne, 2008, In: Scandinavian Journal of Public Health. 170, 36, p. 3-11 8 p.

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

  98. Published

    Selection bias in general practice research: analysis in a cohort of pregnant Danish women

    Ertmann, Ruth Kirk, Nicolaisdottir, Dagny Ros, Kragstrup, Jakob, Siersma, Volkert Dirk, Overbeck, Gritt, Wilson, Philip Michael John & Lutterodt, Melissa C., 2020, In: Scandinavian Journal of Primary Health Care. 38, 4, p. 464-472 9 p.

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

  99. Published

    Seasonal variation in biopsy-proven giant cell arteritis in Eastern Denmark from 1990-2018

    Konig, E. B., Stormly Hansen, M., Foldager, J., Siersma, Volkert Dirk, Loft, A., Terslev, Lene, Møller Døhn, U., Radmer Jensen, M., Wiencke, Anne Katrine Riise, Faber, Carsten, Hamann, Steffen & Heegaard, Steffen, 2021, In: Acta Ophthalmologica. 99, 5, p. 527-532 6 p.

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

  100. Published

    Screening for abdominal aortic aneurysm - Authors' reply

    Johansson, M., Zahl, P. H., Siersma, Volkert Dirk, Jørgensen, K. J., Marklund, B. & Brodersen, John Brandt, 2019, In: Lancet Oncology. 393, 10166, p. 28 1 p.

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

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ID: 3512987