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
- Published
Breast cancer screening implementation and reassurance.
Østerø, J., Siersma, Volkert Dirk & Brodersen, John Brandt, 2013, In: European Journal of Public Health. 24, 2, p. 258-263Research 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
Lacrimal gland lesions in Denmark between 1974 and 2007
von Holstein, Sarah Linea, Therkildsen, M. H., Prause, J. U., Stenman, G., Siersma, Volkert Dirk & Heegaard, Steffen, 2013, In: Acta Ophthalmologica. 91, 4, p. 349-354 5 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Constitutive and ligand-induced TCR degradation
von Essen, Marina Rode, Bonefeld, Charlotte Menne, Siersma, Volkert Dirk, Rasmussen, A. B., Lauritsen, J. P. H., Nielsen, B. L. & Geisler, Carsten, 2004, In: Journal of Immunology. 173, 1, p. 384-93 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Formal home help services and institutionalization
Yamada, Y., Siersma, Volkert Dirk, Avlund, K. & Vass, Mikkel, 2012, In: Archives of Gerontology and Geriatrics. 54, p. e52-e56Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The effect of structured personal care on diabetes symptoms and self-rated health over 14 years after diabetes diagnosis
Willadsen, Tora Grauers, Siersma, Volkert Dirk, Nielsen, Anni Brit Sternhagen, Køster-Rasmussen, Rasmus, Guassora, Ann Dorrit, Jarbol, D. E., Eusebi, P., Malterud, Kirsti, Reventlow, Susanne & Olivarius, Niels de Fine, 2018, In: Primary Care Diabetes. 12, 4, p. 354-363 10 p.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
Multimorbidity and mortality: A 15-year longitudinal registry-based nationwide Danish population study
Willadsen, Tora Grauers, Siersma, Volkert Dirk, Nicolaisdottir, Dagny Ros, Køster-Rasmussen, Rasmus, Jarbøl, D. E., Reventlow, Susanne, Mercer, S. & Olivarius, Niels de Fine, 2018, In: Journal of Comorbidity. 8, p. 1-9 9 p., 8.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
Risk factors for 48-hours mortality after prehospital treatment of opioid overdose
Wichmann, S., Nielsen, S. L., Siersma, Volkert Dirk & Rasmussen, L. S., 2013, In: Emergency Medicine Journal. 30, 3, p. 223-225 3 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Risk factors for 48-hours mortality after prehospital treatment of opioid overdose.
Wichmann, S., Nielsen, S. L., Siersma, Volkert Dirk, Rasmussen, L. S. & Rasmussen, L. S., Nov 2011, In: Resuscitation. 82, 11, p. 1414-1418 4 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
Subjective memory complaints in general practice predicts future dementia: a 4-year follow-up study.
Waldorff, Frans Boch, Vogel, Asmus, Siersma, Volkert Dirk & Waldemar, Gunhild, 2012, In: International Journal of Geriatric Psychiatry. 27, 11, p. 1180-1188 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The effect of reminder letters on the uptake of an e-learning programme on dementia: a randomized trial in general practice
Waldorff, Frans Boch, Siersma, Volkert Dirk, Nielsen, B., Steenstrup, A. P. & Bro, F., 2009, In: Family Practice. 26, 6, p. 466-471 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Full journal publication of abstracts presented at the Nordic Congress of General Practice in 2009 and 2011
Waldorff, Frans Boch, Petersen, K., Vinther, S., Sandholdt, H., Siersma, Volkert Dirk & Andersen, John Sahl, 2017, In: Scandinavian Journal of Primary Health Care. 35, 1, p. 84-88 5 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Association between subjective memory complaints and nursing home placement: a four-year follow-up
Waldorff, Frans Boch, Siersma, Volkert Dirk & Waldemar, Gunhild, 2009, In: International Journal of Geriatric Psychiatry. 24, 6, p. 602-9 7 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
Association between subjective memory complaints and health care utilisation: a three-year follow up
Waldorff, Frans Boch, Siersma, Volkert Dirk & Waldemar, Gunhild, 2009, In: BMC Geriatrics. 9, p. 43Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The efficacy of computer reminders on external quality assessment for point-of-care testing in Danish general practice: rationale and methodology for two randomized trials
Waldorff, Frans Boch, Siersma, Volkert Dirk, Ertmann, Ruth Kirk, Kousgaard, Marius Brostrøm, Nielsen, A. S., Felding, P., Mosbæk, N., Hjortsø, E. & Reventlow, Susanne, 1 Jan 2011, In: Implementation Science. 6, p. 79Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Efficacy of psychosocial intervention in patients with mild Alzheimer's disease: the multicentre, rater blinded, randomised Danish Alzheimer Intervention Study (DAISY)
Waldorff, Frans Boch, Buss, D. V., Eckermann, A., Rasmussen, M. L., Keiding, N., Rishoj, S., Siersma, Volkert Dirk, Sorensen, J., Sorensen, L. V., Vogel, A. & Waldemar, Gunhild, 2012, In: BMJ. 345, p. e4693Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The Danish Alzheimer Intervention Study: Rationale, Study Design and Baseline Characteristics of the Cohort
Waldemar, Gunhild, Waldorff, Frans Boch, Buss, D. V., Eckermann, A., Keiding, N., Rish›j, S., Siersma, Volkert Dirk, S›rensen, J., S›rensen, L. V. & Vogel, A., 2011, In: Neuroepidemiology. 36, 1, p. 52-61 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The Danish Alzheimer intervention study: rationale, study design and baseline characteristics of the cohort
Waldemar, Gunhild, Waldorff, Frans Boch, Buss, D. V., Eckermann, A., Keiding, N., Rishøj, S., Siersma, Volkert Dirk, Sørensen, J., Sørensen, L. V. & Vogel, A., 1 Jan 2011, In: Neuroepidemiology. 36, 1, p. 52-61 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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, , 2023, In: British Journal of Ophthalmology. 107, 9, p. 1231-1238 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Patients newly diagnosed with clinical type 2 diabetes mellitus but presenting with HbA1c within normal range: 19-year mortality and clinical outcomes
Veloso, A. G., Siersma, Volkert Dirk, Heldgaard, P. E. & Olivarius, Niels de Fine, 2013, In: Primary Care Diabetes. 7, 1, p. 33-38Research 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
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
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
- 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
- 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
- Published
The role of the anterolateral ligament in ACL insufficient and reconstructed knees on rotary stability: A biomechanical study on human cadavers
Tavlo, M., Eljaja, S., Tranum-Jensen, Jørgen, Siersma, Volkert Dirk & Krogsgaard, Michael R., Aug 2016, In: Scandinavian Journal of Medicine & Science in Sports. 26, 8, p. 960-966Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Hunde med tegn på cystitis overbehandles
Sørensen, Tina Møller, Bjørnvad, Charlotte Reinhard, Cordoba Currea, Gloria Cristina, Damborg, Peter Panduro, Guardabassi, Luca, Siersma, Volkert Dirk, Bjerrum, Lars & Jessen, Lisbeth Rem, Jun 2018, In: Dyrlægen; fagmagasin for dyrlæger, veterinærstuderende og veterinærsygeplejersker. 12, 3, p. 22-26 5 p.Research output: Contribution to journal › Journal article › Communication
- 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
Effects of Diagnostic Work-Up on Medical Decision-Making for Canine Urinary Tract Infection: An Observational Study in Danish Small Animal Practices
Sørensen, Tina Møller, Bjørnvad, Charlotte Reinhard, Cordoba Currea, Gloria Cristina, Damborg, Peter Panduro, Guardabassi, Luca, Siersma, Volkert Dirk, Bjerrum, Lars & Jessen, Lisbeth Rem, 2018, In: Journal of Veterinary Internal Medicine. 32, 2, p. 743-751Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
- Published
Spending time outside to reduce infections at preschool may be an overrated strategy
Söderström, M., Siersma, Volkert Dirk & Boldemann, C., 2018, In: Acta Paediatrica. 107, 9, p. 1652 1 p.Research output: Contribution to journal › Editorial › 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
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
- Published
Is postoperative cognitive dysfunction a risk factor for dementia?
Steinmetz, Jacob, Siersma, Volkert Dirk, Kessing, Lars Vedel, Rasmussen, L. S. & Group, T. I., 2013, In: British Journal of Anaesthesia. 110 Suppl, 1, p. i92-i97 6 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
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
Psychosocial consequences among women with false-positive results after mammography screening in Norway
Solbjør, M., Forsmo, S., Skolbekken, J., Siersma, Volkert Dirk & Brodersen, John Brandt, 2018, In: Scandinavian Journal of Primary Health Care. 36, 4, p. 380-389 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Effect of aerobic exercise on physical performance in patients with Alzheimer’s disease
Sobol, N. A., Hoffmann, K., Frederiksen, K. S., Vogel, A., Vestergaard, K., Brændgaard, H., Gottrup, H., Lolk, A., Wermuth, L., Jakobsen, S., Laugesen, L., Gergelyffy, R., Høgh, P., Bjerregaard, E., Siersma, Volkert Dirk, Andersen, B. B., Johannsen, P., Waldemar, G., Hasselbalch, S. G. & Beyer, N., 2016, In: Alzheimer's & Dementia. 12, 12, p. 1207–1215 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Change in Fitness and the Relation to Change in Cognition and Neuropsychiatric Symptoms After Aerobic Exercise in Patients with Mild Alzheimer's Disease
Sobol, N. A., Dall, C. H., Høgh, Peter, Hoffmann, K., Frederiksen, K. S., Vogel, A., Siersma, Volkert Dirk, Waldemar, Gunhild, Hasselbalch, Steen & Beyer, N., 2018, In: Journal of Alzheimer's Disease. 65, 1, p. 137-145 9 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
Studies in the interactions between disease development and interventions
Siersma, Volkert Dirk, 2008, Museum Tusculanum.Research output: Book/Report › Ph.D. thesis › Research
- Published
Analysis with repeatedly measured binary item response data by ad hoc Rasch scales
Siersma, Volkert Dirk & Eusebi, P., 2013, Rasch Models in Health. Christensen, K. B., Kreiner, S. & Mesbah, M. (eds.). Wiley, p. 257-275 18 p. (Wiley-ISTE, London).Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
- Published
The importance of factors determining the low health-related quality of life in people presenting with a diabetic foot ulcer – the Eurodiale study.
Siersma, Volkert Dirk, Thorsen, H., Holstein, P., Kars, M., Apelqvist, J., Jude, E., Piagessi, A., Bakker, K., Edmonds, M., Jirkovska, A., Mauricio, D., Tennvall, G., Reike, H., Spraul, M., Uccioli, L., Urbancic, V., Acker, K., Baal, J. & Schaper, N., 2013, In: Diabetic Medicine. 30, 11, p. 1382-1387Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Multivariable modelling for meta-epidemiological assessment of the association between trial quality and treatment effects estimated in randomized clinical trials
Siersma, Volkert Dirk, Als-Nielsen, B., Chen, W., Hilden, Jørgen, Gluud, L. L. & Gluud, C. N., 2007, In: Statistics in Medicine. 26, 14, p. 2745-2758 13 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Subjective memory complaints in primary care patients and death from all causes: a four-year follow-up
Siersma, Volkert Dirk, Waldemar, Gunhild & Waldorff, Frans Boch, Mar 2013, In: Scandinavian Journal of Primary Health Care. 31, 1, p. 7-12Research output: Contribution to journal › Journal article › Research › peer-review
ID: 3512987
Most downloads
-
760
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