Volkert Dirk Siersma
!!Statistiker, External Lecturer
Forskningsenheden for Almen Praksis
Øster Farimagsgade 5
1353 København K
Section of Biostatistics
Øster Farimagsgade 5 opg. B
1353 København K
- 2022
- 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
- Published
Four of five frequently used orthopedic PROMs possess inadequate content validity: a COSMIN evaluation of the mHHS, HAGOS, IKDC-SKF, KOOS and KNEES-ACL
Hansen, C. F., Jensen, J., Odgaard, Anders, Siersma, Volkert Dirk, Comins, J. D., Brodersen, John Brandt & Krogsgaard, Michael R., 2022, In: Knee Surgery, Sports Traumatology, Arthroscopy. 30, p. 3602–3615 14 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Incidence of new-onset type 2 diabetes after cancer: A Danish cohort study
Sylow, Lykke, Grand, Mia Klinten, von Heymann, A., Persson, F., Siersma, Volkert Dirk, Kriegbaum, Margit, Andersen, Christen Bertel L & Johansen, Christoffer, 2022, In: Diabetes Care. 45, 6, p. e105-e106 2 p.Research output: Contribution to journal › Letter › Research › peer-review
- Published
Increased Incidence of Mental Disorders in Children with Cataract: Findings from a Population-based Study
AL-BAKRI, M. O. U. G., SKOVGAARD, A. M., Bach-Holm, Daniella, LARSEN, D. A., Siersma, Volkert Dirk & Kessel, Line, 2022, In: American Journal of Ophthalmology. 236, p. 204-211 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Influence of Antimicrobial Resistance on the Course of Symptoms in Female Patients Treated for Uncomplicated Cystitis Caused by Escherichia coli
Waldorff, M. S., Bjerrum, Lars, Holm, Anne, Siersma, Volkert Dirk, Bang, C., Llor, C. & Cordoba Currea, Gloria Cristina, 2022, In: Antibiotics. 11, 2, 10 p., 188.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Is it okay to choose to receive bad news by telephone? An observational study on psychosocial consequences of diagnostic workup for lung cancer suspicion
Andersen, I. C., Siersma, Volkert Dirk, Marsaa, K., Preisel, N., Høegholm, A., Brodersen, John Brandt & Bodtger, U., 2022, In: Acta Oncologica. 61, 12, p. 1446-1453Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Long-term psychosocial consequences of breast cancer screening – a matched cohort study
Gram, Emma Grundtvig, Brodersen, John Brandt & Siersma, Volkert Dirk, 2022, In: BMJ Evidence-Based Medicine. 27, Supplement 1, 1 p.Research output: Contribution to journal › Conference abstract in journal › Research
- Published
Mental vulnerability before and depressive symptoms during pregnancy and postpartum: a prospective population-based cohort study from general practice
Ertmann, Ruth Kirk, Lyngsøe, B. K., Nicolaisdottir, Dagny Ros, Kragstrup, Jakob & Siersma, Volkert Dirk, 2022, In: Nordic Journal of Psychiatry. 76, 4, p. 243-249 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Mental well-being during stages of COVID-19 lockdown among pregnant women and new mothers
Overbeck, Gritt, Rasmussen, Ida Scheel, Siersma, Volkert Dirk, Kragstrup, Jakob, Ertmann, Ruth Kirk & Wilson, Philip Michael John, 2022, In: BMC Pregnancy and Childbirth. 22, 1, 7 p., 92.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Ocular graft-versus-host disease and dry eye disease after paediatric haematopoietic stem cell transplantation - incidence and risk factors
Jeppesen, H., Kielsen, K., Siersma, Volkert Dirk, Lindegaard, J., Julian, H. O., Heegaard, Steffen, Sengeløv, Henrik & Muller, Klaus, 2022, In: Bone Marrow Transplantation. 57, p. 487–498 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
P05-13 Associations between occupational physical activity and progression of carotid atherosclerosis among middle-aged women, are those with pre-existing cardiovascular disease more vulnerable?
Korshoj, M., Allesoe, K., Mortensen, Ole Steen, Siersma, Volkert Dirk & Kauhanen, J., 2022, In: European Journal of Public Health. 32, 1 p.Research output: Contribution to journal › Conference abstract in journal › Research › peer-review
- Published
Physical activity paradox: could inflammation be a key factor?
Feinberg, J. B., Møller, Anne, Siersma, Volkert Dirk, Bruunsgaard, Helle & Mortensen, Ole Steen, 2022, In: British Journal of Sports Medicine. 56, 21, p. 1224-1229Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Pre-diagnostic trajectories of lymphocytosis predict time to treatment and death in patients with chronic lymphocytic leukemia
Andersen, M. A., Grand, Mia Klinten, Brieghel, C., Siersma, Volkert Dirk, Andersen, Christen Bertel L & Niemann, Carsten, 2022, In: Communications Medicine. 2, 8 p., 50.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Prior Antibiotic Use Increases Risk of Urinary Tract Infections Caused by Resistant Escherichia coli among Elderly in Primary Care: A Case-Control Study
Jensen, Maria Louise Veimer, Siersma, Volkert Dirk, Søes, L. M., Nicolaisdottir, Dagny Ros, Bjerrum, Lars & Holzknecht, Barbara Juliane, 2022, In: Antibiotics. 11, 10, 11 p., 1382.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 2021
- Published
Consequences of screening in colorectal cancer (COS-CRC): development and dimensionality of a questionnaire
Malmqvist, J., Siersma, Volkert Dirk, Bang, C. W. & Brodersen, John Brandt, Dec 2021, In: BMC Psychology. 9, 1, 16 p., 7.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
A catalogue of PROMs in sports science: Quality assessment of PROM development and validation
Hansen, C. F., Jensen, J., Siersma, Volkert Dirk, Brodersen, John Brandt, Comins, J. D. & Krogsgaard, Michael R., 2021, In: Scandinavian Journal of Medicine and Science in Sports. 31, 5, p. 991-998 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Antibiotic prescribing in Danish general practice in the elderly population from 2010 to 2017
Jensen, Maria Louise Veimer, Aabenhus, Rune Munck, Holzknecht, Barbara Juliane, Bjerrum, Lars, Jensen, J. N., Siersma, Volkert Dirk & Cordoba Currea, Gloria Cristina, 2021, In: Scandinavian Journal of Primary Health Care. 39, 4, p. 498-505 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Are adequate PROMs used as outcomes in randomized controlled trials? an analysis of 54 trials
Hansen, C. F., Jensen, J., Brodersen, John Brandt, Siersma, Volkert Dirk, Comins, J. D. & Krogsgaard, Michael R., 2021, In: Scandinavian Journal of Medicine & Science in Sports. 31, 5, p. 972-981 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Article three in a series of ten How to develop a condition-specific PROM
Comins, J. D., Brodersen, John Brandt, Siersma, Volkert Dirk, Jensen, J., Hansen, C. F. & Krogsgaard, Michael R., 2021, In: Scandinavian Journal of Medicine & Science in Sports. 31, 6, p. 1216-1224 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Assessment of content validity and psychometric properties of VISA-A for Achilles tendinopathy
Comins, J., Siersma, Volkert Dirk, Couppé, Christian, Svensson, R. B., Johansen, F., Malmgaard-Clausen, N. M. & Magnusson, Stig Peter, 2021, In: PLoS ONE. 16, 3, 12 p., 0247152.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Breaking potentially bad news of cancer workup to well-informed patients by telephone versus in-person: A randomised controlled trial on psychosocial consequences
Bodtger, U., Marsaa, K., Siersma, Volkert Dirk, Bang, C. W., Høegholm, A. & Brodersen, John Brandt, 2021, In: European Journal of Cancer Care. 30, 5, 11 p., e13435.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Choosing the most appropriate PROM for clinical studies in sports medicine: Article two in a series of ten
Comins, J. D., Brodersen, John Brandt, Siersma, Volkert Dirk, Jensen, J., Hansen, C. F. & Krogsgaard, Michael R., 2021, In: Scandinavian Journal of Medicine and Science in Sports. 31, 6, p. 1209-1215 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Chronic hyperglycemia, hypercholesterolemia, and metabolic syndrome are associated with risk of tendon injury
Skovgaard, D., Siersma, Volkert Dirk, Klausen, S. B., Visnes, H., Haukenes, I., Bang, C. W., Bager, P., Gravare Silbernagel, K., Gaida, J., Magnusson, Stig Peter, Kjær, Michael & Couppé, Christian, 2021, In: Scandinavian Journal of Medicine & Science in Sports. 31, 9, p. 1822-1831 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Conjunctival intraepithelial neoplasia and carcinoma: distinct clinical and histological features in relation to human papilloma virus status
Ramberg, Ingvild Margrethe Sellæg, Toft, Peter Bjerre, Georgsen, J. B., Siersma, Volkert Dirk, Funding, M., Jensen, D. H., von Buchwald, Christian & Heegaard, Steffen, 2021, In: British Journal of Ophthalmology. 105, 6, p. 878-883 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Criteria-based dispatch of emergency medical services in non-traumatic subarachnoid haemorrhage
Sonne, A., Andersen, Jesper, Eskesen, V., Lippert, F., Waldorff, Frans Boch, Bang, C. W., Siersma, Volkert Dirk, Lohse, Nicolai Rasch & Rasmussen, L. S., 2021, In: Danish Medical Journal. 68, 9, 9 p., 02210152.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
- 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
- Published
Effectiveness of a tailored intervention to reduce antibiotics for urinary tract infections in nursing home residents: a cluster, randomised controlled trial
Arnold, Sif Helene, Jensen, J. N., Bjerrum, Lars, Siersma, Volkert Dirk, Bang, C. W., Kousgaard, Marius Brostrøm & Holm, Anne, 2021, In: Lancet Infectious Diseases. 21, 11, p. 1549-1556 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Factors associated with a clinically relevant reduction in menopausal symptoms of a standardized acupuncture approach for women with bothersome menopausal symptoms
Waldorff, Frans Boch, Bang, C. W., Siersma, Volkert Dirk, Brodersen, John Brandt & Lund, K. S., 2021, In: BMC Complementary Medicine and Therapies. 21, 1, 7 p., 29.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
How to translate and locally adapt a PROM: Assessment of cross-cultural differential item functioning
Krogsgaard, Michael R., Brodersen, John Brandt, Christensen, Karl Bang, Siersma, Volkert Dirk, Jensen, J., Hansen, C. F., Engebretsen, L., Visnes, H., Forssblad, M. & Comins, J. D., 2021, In: Scandinavian Journal of Medicine & Science in Sports. 31, 5, p. 999-1008 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Infant crying problems related to maternal depressive and anxiety symptoms during pregnancy: a prospective cohort study
Ölmestig, T. K., Siersma, Volkert Dirk, Birkmose, Anna Rubach, Kragstrup, Jakob & Ertmann, Ruth Kirk, 2021, In: BMC Pregnancy and Childbirth. 21, 1, 11 p., 777.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Influence of educational level on test and treatment for incident hypothyroidism
Møllehave, Line Tang, Jacobsen, R. K., Linneberg, Allan René, Skaaby, T., Knudsen, Nils Jakob, Jørgensen, T., Kårhus, L. L., Kriegbaum, Margit, Grand, Mia Klinten, Siersma, Volkert Dirk, Lind, B., Andersen, Christen Bertel L, Nygaard, Birte, Medici, B. B., Pedersen, I. B., Ravn-Haren, G. & Thuesen, B. H., 2021, In: Clinical Endocrinology. 94, 6, p. 1025-1034 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Long-term success after trabeculotomy in primary congenital glaucoma – a study with up to 35 years follow-up
Kessel, Line, Pedersen, K. B., Siersma, Volkert Dirk, Kappelgaard, P. & Bach-Holm, Daniella, 2021, In: Acta Ophthalmologica. 99, 4, p. 362-368 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Neurosurgical Admission Later Than 4 h After the Emergency Call Does Not Result in Worse Long-Term Outcome in Subarachnoid Haemorrhage
Sonne, A., Andersen, J. B., Eskesen, V., Lippert, F., Waldorff, Frans Boch, Siersma, Volkert Dirk, Lohse, Nicolai Rasch & Rasmussen, L. S., 2021, In: Frontiers in Neurology. 12Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Non-specific symptoms and signs of cancer: different organisations of a cancer patient pathway in Denmark
Damhus, Christina Sadolin, Siersma, Volkert Dirk, Dalton, Susanne Oksbjerg & Brodersen, John Brandt, 2021, In: Scandinavian Journal of Primary Health Care. 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Psychosocial consequences of a three-month follow-up after receiving an abnormal lung cancer CT-screening result: A longitudinal survey
Damhus, Christina Sadolin, Quentin, J. G., Malmqvist, J., Siersma, Volkert Dirk & Brodersen, John Brandt, 2021, In: Lung Cancer. 155, p. 46-52 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Psychosocial consequences of invitation to colorectal cancer screening: A matched cohort study
Malmqvist, J., Siersma, Volkert Dirk, Hestbech, Mie Sara, Nicolaisdottir, Dagny Ros, Bang, C. W. & Brodersen, John Brandt, 2021, In: Journal of Epidemiology and Community Health. 75, 9, 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Psychosocial consequences of screening-detected abdominal aortic aneurisms: a cross-sectional study
Damhus, Christina Sadolin, Siersma, Volkert Dirk, Hansson, A., Bang, C. W. & Brodersen, John Brandt, 2021, In: Scandinavian Journal of Primary Health Care. Supplement. 39, 4, p. 459-465 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Real-world outcomes for a complete nationwide cohort of more than 3200 teriflunomide-treated multiple sclerosis patients in The Danish Multiple Sclerosis Registry
Papp, V., Buron, M. D., Siersma, Volkert Dirk, Rasmussen, P. V., Illes, Z., Kant, M., Hilt, C., Mezei, Z., Roshanisefat, H., Sejbaek, T., Weglewski, Arkadiusz, van Wingerden, J., Geertsen, S. S., Bramow, S., Sellebjerg, Finn Thorup & Magyari, M., 2021, In: PLoS ONE. 16, 5, 16 p., 0250820.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
- 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
ID: 3512987
Most downloads
-
761
downloads
Maternal stress and placental function, a study using questionnaires and biomarkers at birth
Research output: Contribution to journal › Journal article › Research › peer-review
Published -
329
downloads
Clinical indications for antibiotic use in Danish general practice: results from a nationwide electronic prescription database
Research output: Contribution to journal › Journal article › Research › peer-review
Published -
326
downloads
Biomonitoring of Danish school children and mothers including biomarkers of PBDE and glyphosate
Research output: Contribution to journal › Journal article › Research › peer-review
Published