Volkert Dirk Siersma

Volkert Dirk Siersma

!!Statistiker, External Lecturer

ORCID: 0000-0003-1941-2681

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  1. Published

    Dementia and traffic accidents: a Danish register-based cohort study

    Petersen, Jindong Ding, Siersma, Volkert Dirk, Nielsen, C., Vass, Mikkel & Waldorff, Frans Boch, 2016, In: JMIR Research Protocols. 5, 3, p. e191

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

  2. Published

    Depression and anxiety symptoms in pregnant women in Denmark during COVID-19

    Overbeck, Gritt, Andersen, Julie Høgsgaard, mxb897, mxb897, Rasmussen, Ida Scheel, Kragstrup, Jakob, Siersma, Volkert Dirk, Wilson, Philip Michael John & Ertmann, Ruth Kirk, 2021, In: Scandinavian Journal of Public Health. 49, 7, p. 721-729 9 p.

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

  3. Published

    Developing a prediction model to identify people with severe mental illness without regular contact to their GP - a study based on data from the Danish national registers

    Naesager, A. H. D., Damgaard, S. N., Rozing, Maarten Pieter, Siersma, Volkert Dirk, Møller, Anne & Jensen, Katrine Tranberg, 2024, In: BMC Psychiatry. 24, 1, 12 p., 301.

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

  4. 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., 2024, (E-pub ahead of print) In: MedEPublish. 16 p.

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

  5. 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

  6. 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

  7. Published

    Diabetic complications do not hamper improvement of health-related quality of life over the course of treatment of diabetic foot ulcers: the Eurodiale study

    Siersma, Volkert Dirk, Thorsen, Hanne, Holstein, P. E., Kars, M., Apelqvist, J., Jude, E. B., Piaggesi, A., Bakker, K., Edmonds, M., Jirkovská, A., Mauricio, D., Reike, H., Spraul, M., Uccioli, L., Urbancic, V., van Acker, K., van Baal, J. & Schaper, N. C., Jul 2017, In: Journal of Diabetes and its Complications. 31, 7, p. 1145-1151 7 p.

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

  8. Published

    Diabetic foot disease: impact of ulcer location on ulcer healing.

    Pickwell, K., Siersma, Volkert Dirk, Kars, M., Holstein, P. & Schaper, N., 2013, In: Diabetes - Metabolism: Research and Reviews (Online). 29, 5, p. 377-387

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

  9. 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

  10. 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

  11. 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

  12. Published

    Diagnostic Invasiveness and Psychosocial Consequences of False-Positive Mammography

    Heleno, B. M., Siersma, Volkert Dirk & Brodersen, John Brandt, May 2015, In: Annals of Family Medicine. 13, 3, p. 242-249 8 p.

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

  13. Published

    Did psychosocial status, sociodemographics and smoking status affect non-attendance in control participants in the Danish Lung Cancer Screening Trial? A nested observational study

    Malmqvist, J., Siersma, Volkert Dirk, Thorsen, Hanne, Heleno, B., Rasmussen, J. F. & Brodersen, John Brandt, 2020, In: BMJ Open. 10, 2, 8 p.

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

  14. Published

    Diffuse large B-cell lymphoma of the ocular adnexal region: A nation-based study

    Rasmussen, P. K., Ralfkiaer, E., Prause, J. U., Sjö, Lene Dissing, Toft, Peter Bjerre, Siersma, Volkert Dirk & Heegaard, Steffen, 2013, In: Acta Ophthalmologica. 91, p. 163-169 7 p.

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

  15. 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

  16. Published

    Distinguishing fluvio-deltaic facies by bulk geochemistry and heavy minerals: an example from the Miocene of Denmark

    Olivarius, M., Rasmussen, E. S., Siersma, Volkert Dirk, Knudsen, C. & Pedersen, G. K., 2011, In: Sedimentology. 58, 5, p. 1155-1179 25 p.

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

  17. Published

    Documenting organisational development in general practice using a group-based assessment method: the Maturity Matrix

    Eriksson, T., Siersma, Volkert Dirk, Løgstrup, L., Buch, M., Elwyn, G. & Edwards, A., Jul 2010, In: Quality and Safety in Healthcare. 19, 5, p. 1-7 6 p.

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

  18. Published

    Does a history of physical exposures at work affect hand-grip strength in midlife? A retrospective cohort study in Denmark

    Møller, Anne, Reventlow, Susanne, Hansen, Åse Marie, Andersen, L. L., Siersma, Volkert Dirk, Lund, Rikke, Avlund, K., Andersen, J. H. & Mortensen, O. S., 10 May 2013, In: Scandinavian Journal of Work, Environment & Health. 39, 6, p. 599-608

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

  19. Published

    Does anaesthesia cause postoperative cognitive dysfunction? A randomised study of regional versus general anaesthesia in 438 elderly patients

    Rasmussen, L. S., Johnson, T. D., Kuipers, H. M., Kristensen, D., Siersma, Volkert Dirk, Vila, P., Jolles, J., Papaioannaou, A., Abildstrøm, H., Silverstein, J. H., Bonal, J. A., Raeder, J., Nielsen, I. K., Korttila, K., Munoz, L., Dodds, C., Hanning, C. D. & Møller, J. T., 2003, In: Acta Anaesthesiologica Scandinavica. 47, p. 260-266

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

  20. Published

    Does physical exposure throughout working life influence chair-rise performance in midlife? A retrospective cohort study of associations between work and physical function in Denmark

    Møller, Anne, Reventlow, Susanne, Hansen, Åse Marie, Andersen, L. L., Siersma, Volkert Dirk, Lund, Rikke, Avlund, K., Andersen, J. H. & Mortensen, Ole Steen, 4 Nov 2015, In: B M J Open. 5, 11, p. 1-9 9 p., e009873.

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

  21. Published

    Domain-specific cognitive dysfunction after cardiac surgery. A secondary analysis of a randomized trial

    Vedel, A. G., Holmgaard, F., Siersma, Volkert Dirk, Langkilde, Annika Reynberg, Paulson, Olaf B., Ravn, H. B., Nilsson, J. C. & Rasmussen, L. S., 2019, In: Acta Anaesthesiologica Scandinavica. 63, 6, p. 730-738 9 p.

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

  22. Published

    Early predictors of the long-term outcome of low back pain - results of a 22-year prospective cohort study from general practice

    Lonnberg, F., Pedersen, P. & Siersma, Volkert Dirk, 2010, In: Family Practice. 27, 6, p. 609-614 6 p.

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

  23. Published

    Easily Conducted Tests During the First Week Post-stroke Can Aid the Prediction of Arm Functioning at 6 Months

    Ghaziani, E., Couppé, Christian, Siersma, Volkert Dirk, Christensen, Hanne Krarup, Magnusson, Stig Peter, Sunnerhagen, K. S., Persson, H. C. & Murphy, M. A., 2020, In: Frontiers in Neurology. 10, 13 p., 1371.

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

  24. Published

    Educational intervention and functional decline among older people: The modifying effects of social capital

    Poulsen, T., Siersma, Volkert Dirk, Lund, Rikke, Christensen, Ulla, Vass, Mikkel & Avlund, K., May 2014, In: Scandinavian Journal of Public Health. 42, 3, p. 295-303 9 p.

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

  25. Published

    Effect of Storage Temperature for B-Type Natriuretic Peptide Concentrations for Primary Healthcare Populations Reply

    Hejl, J. L., Grand, Mia Klinten, Siersma, Volkert Dirk, Goetze, Jens P. , Olivarius, Niels de Fine, Andersen, C. L. & Lind, B., 2019, In: Clinical Chemistry. 65, 6, p. 812-813 2 p.

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

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