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
- 2021
- 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
- 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
- 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
- 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
- 2020
- 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
- Published
Health-Related Quality of Life and Physical Function in Individuals with Parkinson's Disease after a Multidisciplinary Rehabilitation Regimen-A Prospective Cohort Feasibility Study
Nielsen, C., Siersma, Volkert Dirk, Ghaziani, E., Beyer, N., Magnusson, Stig Peter & Couppé, Christian, Jan 2020, In: International Journal of Environmental Research and Public Health. 17, 20, 13 p., 7668.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Age-related prevalence and clinical significance of neutropenia - isolated or combined with other cytopenias: Real world data from 373 820 primary care individuals
Palmblad, J., Siersma, Volkert Dirk, Lind, B., Bjerrum, O. W., Hasselbalch, Hans Carl & Andersen, Christen Bertel L, 2020, In: American Journal of Hematology. 95, 5, p. 521-528 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Clinical management of hip fractures in elderly patients with dementia and postoperative 30-day mortality: A population-based cohort study
Petersen, Jindong Ding, Siersma, Volkert Dirk, Wehberg, S., Nielsen, C. T., Viberg, B. & Waldorff, Frans Boch, 2020, In: Brain and Behavior. 10, 11, 10 p., e01823.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
- 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
- Published
Effect of a participatory patient education programme (NExt EDucation) in group-based patient education among Danes with type 2 diabetes
Christoffersen, L. A. N., Hansen, A. K., Pals, R. A. S., Willaing, I., Siersma, Volkert Dirk & Olesen, K., 2020, In: Chronic Illness. 16, 3, p. 226-236 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Five-year trends in marital stability, academic achievement, and socioeconomic indicators after concussion: a national register study
Graff, H. J., Siersma, Volkert Dirk, Møller, Anne, Egerod, Ingrid Eugenie & Rytter, Hana Malá, 2020, In: Journal of Head Trauma Rehabilitation. 35, 2, p. E86-E94 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Long-term survival and cognitive function according to blood pressure management during cardiac surgery: A follow up
Larsen, M. H., Draegert, C., Vedel, A. G., Holmgaard, F., Siersma, Volkert Dirk, Nilsson, J. C. & Rasmussen, L. S., 2020, In: Acta Anaesthesiologica Scandinavica. 64, 7, p. 936-944 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Mortality Following Trajectories of Mobility Limitations: The Modifying Impact of Social Factors
Jørgensen, Terese Sara Høj, Siersma, Volkert Dirk, Lund, Rikke & Nilsson, Charlotte Juul, 2020, In: Journal of Aging and Health. 32, 3-4, p. 134-142 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Overdiagnosis of lung cancer with low-dose computed tomography screening: meta-analysis of the randomised clinical trials
Brodersen, John Brandt, Voss, T., Martiny, Frederik Handberg Juul, Siersma, Volkert Dirk, Barratt, A. & Heleno, B., 2020, In: Breathe. 16, 1, 11 p., 200013.Research output: Contribution to journal › Review › Research › peer-review
- Published
Psychosocial consequences of false positives in the Danish Lung Cancer CT Screening Trial: A nested matched cohort study
Rasmussen, J. F., Siersma, Volkert Dirk, Malmqvist, J. & Brodersen, John Brandt, 2020, In: BMJ Open. 10, 6, e034682.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Reconstruction of the anterior cruciate- and anterolateral ligament deficient knee with a modified iliotibial graft reduces instability more than with an intra-articular hamstring graft
Eljaja, S. B., Konradsen, L., Siersma, Volkert Dirk, Athwal, K., Amis, A. A. & Krogsgaard, Michael R., 2020, In: Knee Surgery, Sports Traumatology, Arthroscopy. 28, p. 2526–2534 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Reducing Antibiotic Prescriptions for Urinary Tract Infection in Nursing Homes Using a Complex Tailored Intervention Targeting Nursing Home Staff: Protocol for a Cluster Randomized Controlled Trial
Arnold, Sif Helene, Jensen, J. N., Kousgaard, Marius Brostrøm, Siersma, Volkert Dirk, Bjerrum, Lars & Holm, Anne, 2020, In: J M I R Research Protocols. 9, 5, 10 p., e17710.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
- 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
- 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
- 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
- 2019
- Published
Intergenerational relations and social mobility: Social inequality in physical function in old age
Jørgensen, Terese Sara Høj, Nilsson, Charlotte Juul, Lund, Rikke, Siersma, Volkert Dirk & Fors, S., Jan 2019, In: Archives of Gerontology and Geriatrics. 80, p. 58-64 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Association between perioperative hyperoxia and cerebrovascular complications after laparotomy: A post-hoc follow-up study
Kongebro, E. K., Jørgensen, Lars Nannestad, Siersma, Volkert Dirk & Meyhoff, Christian Sylvest, 2019, In: Acta Anaesthesiologica Scandinavica. 63, 2, p. 164-170Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Association of the blood eosinophil count with end-organ symptoms
Bjerrum, O. W., Siersma, Volkert Dirk, Hasselbalch, Hans Carl, Lind, B. & Andersen, Christen Bertel L, 2019, In: Annals of Medicine and Surgery. 45, p. 11-18Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Changes in HbA1cduring the first six years after the diagnosis of Type 2 diabetes mellitus predict long-term microvascular outcomes
Rozing, Maarten Pieter, Møller, Anne, Aabenhus, Rune Munck, Siersma, Volkert Dirk, Rasmussen, K. & Køster-Rasmussen, Rasmus, 2019, In: PLoS ONE. 14, 11, e0225230.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Changes in Prescription Routines for Treating Hypothyroidism Between 2001 and 2015: An Observational Study of 929,684 Primary Care Patients in Copenhagen
Medici, B. B., Nygaard, Birte, la Cour, J. L., Grand, Mia Klinten, Siersma, Volkert Dirk, Nicolaisdottir, Dagny Ros, Lind, B., Olivarius, Niels de Fine & Andersen, Christen Bertel L, 2019, In: Thyroid. 29, 7, p. 910-919Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Cumulative physical workload and mobility limitations in middle-aged men and women: a population-based study with retrospective assessment of workload
Møller, Anne, Mänty, M., Andersen, L. L., Siersma, Volkert Dirk, Lund, Rikke & Mortensen, Ole Steen, 2019, In: International Archives of Occupational and Environmental Health. 92, 5, p. 651-660 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Dementia and road traffic accidents among non-institutionalized older people in Denmark: A Danish register-based nested case-control study
Petersen, Jindong Ding, Siersma, Volkert Dirk, Christensen, R. D., Storsveen, M. M., Nielsen, C. T., Vass, Mikkel & Waldorff, Frans Boch, 2019, In: Scandinavian Journal of Public Health. 47, 2, p. 221-228 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
- Published
Efficacy of a standardised acupuncture approach for women with bothersome menopausal symptoms: a pragmatic randomised study in primary care (the ACOM study)
Lund, K. S., Siersma, Volkert Dirk, Brodersen, John Brandt & Waldorff, Frans Boch, 2019, In: BMJ Open. 9, 1, p. e023637 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Examining to what extent pregnancy-related physical symptoms worry women in the first trimester of pregnancy: a cross-sectional study in general practice
Lutterodt, Melissa C., Kähler, P., Kragstrup, Jakob, Nicolaisdottir, Dagny Ros, Siersma, Volkert Dirk & Ertmann, Ruth Kirk, 2019, In: British Journal of General Practice Open . 3, 9 p., 4.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Labour market attachment after mild traumatic brain injury: nationwide cohort study with 5-year register follow-up in Denmark
Graff, H. J., Siersma, Volkert Dirk, Møller, Anne, Kragstrup, Jakob, Andersen, L. L., Egerod, Ingrid Eugenie & Rytter, Hana Malá, 2019, In: BMJ Open. 9, 4, 10 p., e026104.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Mobility limitation as determinant of primary care use and ambulatory care sensitive conditions
Jørgensen, Terese Sara Høj, Siersma, Volkert Dirk, Lund, Rikke & Nilsson, Charlotte Juul, 2019, In: European Geriatric Medicine. 10, 1, p. 53-60 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- Published
Physical discomfort in early pregnancy and postpartum depressive symptoms
Ertmann, Ruth Kirk, Nicolaisdottir, Dagny Ros, Kragstrup, Jakob, Siersma, Volkert Dirk, Lutterodt, Melissa C. & Bech, P., 2019, In: Nordic Journal of Psychiatry. 73, 3, p. 200-206 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Pre-test probability of urinary tract infection in dogs with clinical signs of lower urinary tract disease
Sørensen, Tina Møller, Holmslykke, M., Nordlund, M., Siersma, Volkert Dirk & Jessen, Lisbeth Rem, 2019, In: Veterinary Journal. 247, p. 65-70 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Premorbid risk factors influencing labour market attachment after mild traumatic brain injury: a national register study with long-term follow-up
Graff, H. J., Siersma, Volkert Dirk, Møller, Anne, Kragstrup, Jakob, Andersen, L. L., Egerod, Ingrid Eugenie & Rytter, Hana Malá, 2019, In: BMJ Open. 9, 10 p., e027297.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Psychosocial consequences of receiving a lung cancer diagnosis by telephone versus in an outpatient clinic. A pragmatic randomized trial
Bodtger, U., Marsaa, K., Brodersen, John Brandt, Siersma, Volkert Dirk, Bang, C. W. & Høegholm, A., 2019, In: European Respiratory Journal. 54, Supplement 63, PA4651.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
- 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
- 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. 168-176Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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. 202-207Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
ID: 3512987
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Maternal stress and placental function, a study using questionnaires and biomarkers at birth
Research output: Contribution to journal › Journal article › Research › peer-review
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328
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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
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326
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Biomonitoring of Danish school children and mothers including biomarkers of PBDE and glyphosate
Research output: Contribution to journal › Journal article › Research › peer-review
Published