Volkert Dirk Siersma

Volkert Dirk Siersma

!!Statistiker, External Lecturer

ORCID: 0000-0003-1941-2681

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  1. Published

    Moderate-to-high intensity physical exercise in patients with Alzheimer’s disease: a randomised controlled trial.

    Hoffmann, K., Sobol, N. A., Frederiksen, K. S., Beyer, N. A-M., Vogel, A. M., Vestergaard, K., Brændgaard, H., Gottrup, H., Lolk, A., Wermuth, L., Jacobsen, S., Laugesen, L. P., Gergelyffy, R. G., Høgh, P., Bjerregaard, E., Andersen, B. B., Siersma, V. D., Johannsen, P., Cotman, C. W., Waldemar, G. & 1 others, Hasselbalch, Steen, 2016, In: Journal of Alzheimer's Disease. 50, 2, p. 443-453 11 p.

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

  2. Published

    Diagnosing Urinary Tract Infection in General Practice

    Holm, Anne, Jessen, Lisbeth Rem, Frimodt-Møller, N., Siersma, Volkert Dirk & Bjerrum, Lars, 2017

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

  3. Published

    Availability of point-of-care culture and microscopy in general practice - does it lead to more appropriate use of antibiotics in patients with suspected urinary tract infection?

    Holm, Anne, Siersma, Volkert Dirk, Bjerrum, Lars & Cordoba Currea, Gloria Cristina, Dec 2020, In: The European Journal of General Practice. 26, 1, p. 175-181 7 p.

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

  4. Published

    Clinical accuracy of point-of-care urine culture in general practice

    Holm, Anne, Cordoba Currea, Gloria Cristina, Sørensen, Tina Møller, Jessen, Lisbeth Rem, Frimodt-Møller, N., Siersma, Volkert Dirk & Bjerrum, Lars, Jun 2017, In: Scandinavian Journal of Primary Health Care. 35, 2, p. 170-177 8 p.

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

  5. 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

  6. Published

    Diagnosis of urinary tract infection based on symptoms: How are likelihood ratios affected by age? a diagnostic accuracy study

    Holm, Anne, Siersma, Volkert Dirk & Cordoba Currea, Gloria Cristina, 2021, In: BMJ Open. 11, 1, 7 p., e039871.

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

  7. Published

    Point of care susceptibility testing in primary care: does it lead to a more appropriate prescription of antibiotics in patients with uncomplicated urinary tract infections? Protocol for a randomized controlled trial

    Holm, Anne, Cordoba Currea, Gloria Cristina, Sørensen, Tina Møller, Jessen, Lisbeth Rem, Siersma, Volkert Dirk & Bjerrum, Lars, 2015, In: B M C Family Practice. 16, 8 p., 106.

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

  8. Published

    Effect of point-of-care susceptibility testing in general practice on appropriate prescription of antibiotics for patients with uncomplicated urinary tract infection: a diagnostic randomised controlled trial

    Holm, Anne, Cordoba Currea, Gloria Cristina, Sørensen, Tina Møller, Jessen, Lisbeth Rem, Frimodt-Møller, N., Siersma, Volkert Dirk & Bjerrum, Lars, Oct 2017, In: B M J Open. 7, 10, 9 p., e018028.

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

  9. Published

    Development and validation of a condition-specific diary to measure severity, bothersomeness and impact on daily activities for patients with acute urinary tract infection in primary care

    Holm, Anne, Cordoba Currea, Gloria Cristina, Siersma, Volkert Dirk & Brodersen, John Brandt, 24 Mar 2017, In: Health and Quality of Life Outcomes. 15, p. 1-8 8 p., 57.

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

  10. 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

  11. 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

  12. Published

    Sampling of urine for diagnosing urinary tract infection in general practice–First-void or mid-stream urine?

    Hølmkjær, Pernille, Bjerrum, Lars, Mäkelä, Marjukka, Siersma, Volkert Dirk & Holm, Anne, 2019, In: Scandinavian Journal of Primary Health Care. 37, 1, p. 113-119 7 p.

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

  13. 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

  14. 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

  15. Published

    Defining the surgical footprint in cataract surgery: patient-related outcomes dependent on the experience of the surgeon

    Jacobsen, M. F., Holm, Lars Morten, Erichsen, J. H., Konge, Lars, Siersma, Volkert Dirk, la Cour, Morten & Thomsen, Ann Sofia Skou, 2021, In: Acta Ophthalmologica. 99, 7, p. e999-e1005 7 p.

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

  16. Published

    Predictors of visual outcome in patients operated for craniopharyngioma - a Danish national study

    Jacobsen, M. F., Thomsen, A. S. S., Bach-Holm, Daniella, Doroudian, G., Nissen, K. R., Fugleholm, Kåre, Poulsgaard, L., Siersma, Volkert Dirk & Heegaard, Steffen, Feb 2018, In: Acta Ophthalmologica. 96, 1, p. 39-45

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

  17. 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

  18. 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

  19. Published

    Cerebrospinal Fluid Amyloid Beta and Tau Concentrations Are Not Modulated by 16 Weeks of Moderate- to High-Intensity Physical Exercise in Patients with Alzheimer Disease

    Jensen, C. S., Portelius, E., Siersma, Volkert Dirk, Høgh, Peter, Wermuth, L., Blennow, K., Zetterberg, H., Waldemar, Gunhild, Hasselbalch, Steen & Simonsen, A. H., Oct 2016, In: Dementia and Geriatric Cognitive Disorders. 42, 3-4, p. 146-158 13 p.

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

  20. Published

    Patients with Alzheimer's disease who carry the APOE ε4 allele benefit more from physical exercise

    Jensen, C. S., Simonsen, A. H., Siersma, Volkert Dirk, Beyer, N., Frederiksen, K. S., Gottrup, H., Hoffman, K., Høgh, Peter, Frikke-Schmidt, Ruth, Sobol, N. A., Waldemar, Gunhild, Wermuth, L. & Hasselbalch, Steen, 2019, In: Alzheimer's and Dementia: Translational Research and Clinical Interventions. 5, 1, p. 99-106 8 p.

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

  21. Published

    Paracetamol for feverish children: parental motives and experiences

    Jensen, J. F., Tonnesen, L. L., Söderström, M., Thorsen, Hanne & Siersma, Volkert Dirk, 2010, In: Scandinavian Journal of Primary Health Care. 28, 2, p. 115-120 6 p.

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

  22. Published

    Association of Maternal Self-Medication and Over-the-Counter Analgesics for Children

    Jensen, J. F., Gottschau, M., Siersma, Volkert Dirk, mxb897, mxb897, Holstein, B. E. & Knudsen, Lisbeth E., 1 Feb 2014, In: Pediatrics. 133, 2, p. e291-8 8 p.

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

  23. 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

  24. Published

    Direct and indirect healthcare costs of lung cancer CT screening in Denmark: a registry study

    Jensen, Manja Dahl, Siersma, Volkert Dirk, Rasmussen, J. F. & Brodersen, John Brandt, 2020, In: B M J Open. 10, 1, 11 p., e031768.

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

  25. 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

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ID: 3512987