Volkert Dirk Siersma

Volkert Dirk Siersma

!!Statistiker, External Lecturer

ORCID: 0000-0003-1941-2681

Publication year:
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1 - 50 out of 379Page size: 50
  1. 2024
  2. Published

    Allogeneic mesenchymal stem cell therapy for dry eye disease in patients with Sjögren's syndrome: A randomized clinical trial

    Møller-Hansen, M., Larsen, A. C., Wiencke, Anne Katrine Riise, Terslev, Lene, Siersma, Volkert Dirk, Andersen, T. T., Hansen, Adam Espe, Bruunsgaard, Helle, Haack-Sørensen, M., Ekblond, A., Kastrup, J., Utheim, T. P. & Heegaard, Steffen, 2024, In: Ocular Surface. 31, p. 1-8 8 p.

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

  3. Published

    Deaths and cardiopulmonary events following colorectal cancer screening—A systematic review with meta-analyses

    Martiny, Frederik Handberg Juul, Bie, A. K. L., Jauernik, Christian Patrick, Rahbek, O. J., Nielsen, S. B., Gram, Emma Grundtvig, Kindt, I. S., Siersma, Volkert Dirk & Brodersen, John Brandt, 2024, In: PLoS ONE. 19, 3, 23 p., e0295900.

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

  4. Published

    Effectiveness of an adaptive, multifaceted intervention to enhance care for patients with complex multimorbidity in general practice: protocol for a pragmatic cluster randomised controlled trial (the MM600 trial)

    Holm, Anne, Lyhnebeck, A. B., Rozing, Maarten Pieter, Buhl, S. F., Willadsen, Tora Grauers, Prior, A., Christiansen, Ann-Kathrin Lindahl, Kristensen, J., Andersen, John Sahl, Waldorff, Frans Boch, Siersma, Volkert Dirk, Brodersen, John Brandt, Reventlow, Susanne & MM600 project team, M. P. T., 2024, In: BMJ Open. 14, 2, 11 p., e077441.

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

  5. Published

    Long-term functional and structural outcomes in patients with primary congenital glaucoma — A Danish nationwide study

    Brynskov, T., Bach-Holm, Daniella, Kappelgaard, P., Siersma, Volkert Dirk, Pedersen, Karen Bjerg & Kessel, Line, 2024, In: Acta Ophthalmologica. 102, 2, p. 228-237 10 p.

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

  6. Published

    Mental healthcare utilisation among Danish formerly deployed military personnel and their civilian counterparts: a cohort study

    Stoltenberg, Christian Ditlev G, Vedtofte, M. S., Nielsen, Anni Brit Sternhagen, Andersen, S. B., Siersma, Volkert Dirk, Christensen, K. S. & Osler, Merete, 2024, In: European Journal of Psychotraumatology. 15, 1, 12 p., 2296188.

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

  7. Published

    Ophthalmic symptoms, clinical signs and diagnostic delay in infants diagnosed with brain tumours in Denmark between 2007 and 2017

    Turanzas, N. J., Mathiasen, René, Heegaard, Steffen, Schmiegelow, Kjeld, Sehested, A., Holtz, J. K., Siersma, Volkert Dirk, Nissen, K. R. & von Holstein, Sarah Linea, 2024, In: Acta Ophthalmologica. 102, 3, p. 334-341 8 p.

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

  8. Published

    Relationship between cumulative exposure to occupational lifting throughout working life and risk of ischemic heart disease in men and women. The Copenhagen Aging and Midlife Biobank

    Korshøj, M., Møller, Anne, Siersma, Volkert Dirk, Lund, Rikke, Hougaard, Charlotte Ørsted, Mortensen, Ole Steen & Allesøe, K., 2024, In: Annals of Work Exposures and Health. 68, 2, p. 109–121 13 p.

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

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. 2023
  15. Published

    A cross-sectional study of the association between family conflicts and children's health: Lolland-Falster Health Study

    Søndergaard, Elisabeth, Reventlow, Susanne, Siersma, Volkert Dirk, Nicolaisdottir, Dagny Ros, Jepsen, R., Rasmussen, K. & Møller, Anne, 2023, In: Child: Care, Health and Development. 49, 6, p. 972-984 13 p.

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

  16. Published

    Assessment of the Psychometric Properties of the Danish VISA-P

    Agergaard, Anne-Sofie, Comins, J. D., Siersma, Volkert Dirk, Malmgaard-Clausen, N. M., Couppé, Christian, Hjortshoej, M. H., Olesen, J. L. & Magnusson, Stig Peter, 2023, In: Translational Sports Medicine. 2023, 8 p., 5291949.

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

  17. Published

    C reactive protein-guided prescription of antibiotics for children under 12 years with respiratory symptoms in Kyrgyzstan: protocol for a randomised controlled clinical trial with 14 days follow-up

    Isaeva, E., Bloch, J., Poulsen, A., Kurtzhals, Jørgen, Reventlow, Susanne, Siersma, Volkert Dirk, Akylbekov, A., Sooronbaev, T., Aabenhus, Rune Munck & Kjærgaard, J., 2023, In: BMJ Open. 13, 4, 6 p., e066806.

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

  18. Published

    Colon cancer diagnosed in patients with non-specific symptoms - comparisons between diagnostic paradigms

    Damhus, Christina Sadolin, Siersma, Volkert Dirk, Birkmose, Anna Rubach, Stovring, H., Dalton, Susanne Oksbjerg & Brodersen, John Brandt, 2023, In: Acta Oncologica. 62, 3, p. 272-280 9 p.

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

  19. Published

    Comparing restrictive versus liberal oxygen strategies for trauma patients: The TRAUMOX2 trial—Statistical analysis plan

    Arleth, T., Baekgaard, J., Siersma, Volkert Dirk, Klimek, M., Hinkelbein, J., Rasmussen, L. S., Steinmetz, Jacob & for The TRAUMOX2 Study Group, F. T. T. S. G., 2023, In: Acta Anaesthesiologica Scandinavica. 67, 6, 10 p.

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

  20. E-pub ahead of print

    Development and implementation of a tool for measuring the training effectiveness of the patient-centered consultation mode

    Jørgensen, Merete, Thorsen, Hanne, Siersma, Volkert Dirk & Bang, C. W., 2023, (E-pub ahead of print) In: MedEPublish. 16 p.

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

  21. Published

    Development of quality indicators for the diagnosis and treatment of urinary tract infections in general practice: a RAND appropriateness method

    Saust, Laura Trolle, Siersma, Volkert Dirk, Bjerrum, Lars & Hansen, M. P., 2023, In: BMJ Open Quality. 12, 2, 8 p.

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

  22. Published

    Evaluation of the Danish version of the prenatal parental reflective functioning questionnaire in early pregnancy as a screening tool

    Schwartz, M., Rasmussen, Ida Scheel, Wilson, Philip Michael John, Overbeck, Gritt & Siersma, Volkert Dirk, 2023, In: Infant Mental Health Journal. 44, 3, 19 p.

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

  23. Published

    Factors in early pregnancy predicting pregnancy-related pain in the second and third trimester

    Ertmann, Ruth Kirk, Nicolaisdottir, Dagny Ros, Siersma, Volkert Dirk, Overbeck, Gritt, de Voss, Sarah Strøyer, Modin, F. A. & Lutterodt, Melissa C., 2023, In: Acta Obstetricia et Gynecologica Scandinavica. 102, 10, p. 1269-1280 12 p.

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

  24. Published

    Family wellbeing in general practice: a study protocol for a cluster-randomised trial of the web-based resilience programme on early child development

    Overbeck, Gritt, Kragstrup, Jakob, Gørtz, Mette, Rasmussen, Ida Scheel, mxb897, mxb897, Siersma, Volkert Dirk, de Voss, Sarah Strøyer, Ertmann, Ruth Kirk, Shahrzad, S., Appel, Clara Lundmark & Wilson, Philip Michael John, 2023, In: Trials. 24, 1, 12 p., 7.

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

  25. Published

    Labour market attachment dynamics in patients with concussion: a Danish nationwide register-based cohort study

    Graff, H. J., Siersma, Volkert Dirk, Møller, Anne, Waldorff, Frans Boch, Modin, F. A. & Rytter, Hana Malá, 2023, In: BMC Public Health. 23, 1, 11 p., 2493.

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

  26. Published

    Long-term psychosocial consequences of false-positive screening mammography: a cohort study with follow-up of 12–14 years in Denmark

    Gram, Emma Grundtvig, Siersma, Volkert Dirk & Brodersen, John Brandt, 2023, In: BMJ Open. 8 p.

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

  27. Published

    Management of dyslipidaemia in individuals with severe mental illness: a population-based study in the Greater Copenhagen Area

    Høgnason Mohr, G., Barcella, C. A., Grand, Mia Klinten, Kriegbaum, Margit, Siersma, Volkert Dirk, Hahn, M. K., Agarwal, S. M., Bakkedal, Catrine, Baandrup, Lone, Knop, Filip Krag, Andersen, C. L. & Ebdrup, Bjørn, 2023, In: Therapeutic Advances in Psychopharmacology. 13, 13 p.

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

  28. Published

    Measuring needs-based quality of life and self-perceived health inequity in patients with multimorbidity: investigating psychometric measurement properties of the MultiMorbidity Questionnaire (MMQ) using primarily Rasch models

    Bissenbakker, Kristine Henderson, Siersma, Volkert Dirk, Jønsson, Alexandra Brandt Ryborg, Møller, Anne, Christensen, Karl Bang & Brodersen, John Brandt, 2023, In: Journal of Patient-Reported Outcomes. 7, 1, 15 p., 94.

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

  29. Published

    Monocytosis in primary care and risk of haematological malignancies

    Christensen, M. E., Siersma, Volkert Dirk, Kriegbaum, Margit, Lind, B. S., Samuelsson, J., Østgård, L. S. G., Grønbæk, Kirsten & Andersen, Christen Bertel L, 2023, In: European Journal of Haematology. 110, 4, p. 362-370 9 p.

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

  30. Published

    Multimorbidity in patients with low back pain in Danish chiropractic practice: a cohort study

    Rafn, B. S., Hartvigsen, J., Siersma, Volkert Dirk & Andersen, John Sahl, 2023, In: Chiropractic and Manual Therapies. 31, 1, 11 p., 8.

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

  31. Published

    Occupational physical activity predicts baseline and 8-year progression of carotid atherosclerosis among women

    Korshøj, M., Allesøe, K., Mortensen, Ole Steen, Siersma, Volkert Dirk, Kauhanen, J. & Krause, N., 2023, In: Scandinavian Journal of Medicine and Science in Sports. 33, 9, p. 1792-1806 15 p.

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

  32. Published

    School performances in children with cataract: results from a population-based cohort study

    Al-Bakri, M., Skovgaard, A. M., Bach-Holm, Daniella, Larsen, D. A., Siersma, Volkert Dirk & Kessel, Line, 2023, In: BMJ Open. 13, 8, 9 p., e072984.

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

  33. 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

  34. 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

  35. 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

  36. 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

  37. 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

  38. 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

  39. 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

  40. 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

  41. 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

  42. 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

  43. 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

  44. 2022
  45. Published

    A high fraction of inspired oxygen may increase mortality in intubated trauma patients – A retrospective cohort study

    Baekgaard, J., Siersma, Volkert Dirk, Christensen, R. E., Ottosen, C. I., Gyldenkærne, K. B., Garoussian, J., Baekgaard, E. S., Steinmectz, J. & Rasmussen, L. S., 2022, In: Injury. 53, 1, p. 190-197 8 p.

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

  46. Published

    Acetabular retroversion does not affect outcome in primary hip arthroscopy for femoroacetabular impingement

    Dippmann, Christian Andreas, Siersma, Volkert Dirk, Overgaard, Søren & Krogsgaard, Michael R., 2022, In: Knee Surgery, Sports Traumatology, Arthroscopy. 30, p. 3535–3543 9 p.

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

  47. Published

    Antibiotic treatment of community-acquired pneumonia: a questionnaire survey in Danish general practice

    Eggers-Kaas, L., Bisgaard, L., Thomsen, J. L., Jarbøl, D. E., Llor, C., Christensen, M. B., Bjerrum, Lars, Siersma, Volkert Dirk & Hansen, M. P., 2022, In: Basic & Clinical Pharmacology & Toxicology. 130, 1, p. 151-157 7 p.

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

  48. Published

    Changes in leisure time physical activity unrelated to subsequent body weight changes, but body weight changes predicted future activity

    Petersen, Jindong Ding, Siersma, Volkert Dirk, Andersen, M. K. K. & Heitmann, Berit, 2022, In: Journal of Sports Sciences. 40, 3, p. 288-298 11 p.

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

  49. Published

    Comparing restrictive versus liberal oxygen strategies for trauma patients-the TRAUMOX2 trial: protocol for a randomised clinical trial

    Baekgaard, J., Arleth, T., Siersma, Volkert Dirk, Hinkelbein, J., Yücetepe, S., Klimek, M., Van Vledder, M. G., Van Lieshout, E. M. M., Mikkelsen, S., Zwisler, S. T., Andersen, M., Fenger-Eriksen, C., Isbye, Dan Lou, Rasmussen, L. S. & Steinmetz, Jacob, 2022, In: BMJ Open. 12, 11, 9 p., e064047.

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

  50. Published

    Diagnosis and Antibiotic Treatment of Urinary Tract Infections in Danish General Practice: A Quality Assessment

    Saust, Laura Trolle, Siersma, Volkert Dirk, Lykkegaard, J., Bjerrum, Lars & Hansen, M. P., 2022, In: Antibiotics. 11, 12, 10 p., 1759.

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

  51. Published

    Effectiveness of promotion and support for physical activity maintenance post total hip arthroplasty-study protocol for a pragmatic, assessor-blinded, randomized controlled trial (the PANORAMA trial)

    Bieler, T., Magnusson, Stig Peter, Siersma, Volkert Dirk, Rinaldo, M., Schmiegelow, M. T., Beck, T., Krifa, A., Kjaer, B. H., wcr491, wcr491 & Midtgaard, Julie, 2022, In: Trials. 23, 1, 17 p., 647.

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

  52. Published

    Effects of Heavy Slow Resistance Training Combined With Corticosteroid Injections or Tendon Needling in Patients With Lateral Elbow Tendinopathy A 3-Arm Randomized Double-Blinded Placebo-Controlled Study

    Couppé, Christian, Døssing, S., Bulow, P. M., Siersma, Volkert Dirk, Zilmer, C. K., Bang, C. W., Høffner, Rikke, Kracht, M., Hogg, P., Edstrom, G., Kjær, Michael & Magnusson, Stig Peter, 2022, In: American Journal of Sports Medicine. 50, 10, p. 2787-2796 10 p.

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

  53. Published

    Effects of Implementing the Short-Term Assessment of Risk and Treatability for Mechanical Restraint in a Forensic Male Population: A Stepped-Wedge, Cluster-Randomized Design

    Hvidhjelm, J., Brandt-Christensen, M., Delcomyn, C., Møllerhøj, J., Siersma, Volkert Dirk & Bak, J., 2022, In: Frontiers in Psychiatry. 13, 9 p., 822295.

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

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ID: 3512987