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
- 2011
- Published
Malignant lymphoma of the lacrimal gland: a nation-based study
Rasmussen, P. K., Ralfkiaer, E., Prause, J. U., Sjö, Lene Dissing, Siersma, Volkert Dirk & Heegaard, Steffen, 2011, In: Archives of Ophthalmology. 129, 10, p. 1275-80 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Participation bias in a randomised trial of screening for lung cancer
Hestbech, Mie Sara, Siersma, Volkert Dirk, Dirksen, A., Pedersen, J. H. & Brodersen, John Brandt, 2011, In: Lung Cancer. 73, 3, p. 325-31 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Prehospital treatment of opioid overdose in Copenhagen--is it safe to discharge on-scene?
Rudolph, S. S., Jehu, G., Nielsen, S. L., Nielsen, K., Siersma, Volkert Dirk & Rasmussen, L. S., 2011, In: Resuscitation. 82, 11, p. 1414-1418 5 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Prevalence and progression of visual impairment in patients newly diagnosed with clinical type 2 diabetes: a 6-year follow up study
Olivarius, Niels de Fine, Siersma, Volkert Dirk, Almind, G. J. & Nielsen, N. V., 2011, In: B M C Public Health. 11, 80Research 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
Treatment of opioid overdose in a physician-based prehospital EMS: Frequency and long-term prognosis
Nielsen, K., Nielsen, S. L., Siersma, Volkert Dirk & Rasmussen, L. S., 2011, In: Resuscitation. 82, 11, p. 1410-1413 4 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Urinary markers of nucleic acid oxidation and long-term mortality of newly diagnosed type 2 diabetic patients
Broedbaek, K., Siersma, Volkert Dirk, Henriksen, T., Weimann, A., Petersen, M., Andersen, J. T., Jimenez-Solem, E., Stovgaard, E. S., Hansen, Lars J, Henriksen, J. E., Bonnema, S. J., Olivarius, Niels de Fine & Poulsen, H. E., 2011, In: Diabetes Care. 34, 12, p. 2594-2596 3 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
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
Patients newly diagnosed with clinical type 2 diabetes during oral glucocorticoid treatment and observed for 14 years: all-cause mortality and clinical developments
Olivarius, Niels de Fine, Siersma, Volkert Dirk, Dyring-Andersen, B., Drivsholm, Thomas, Hansen, Lars J & Henriksen, J. E., Apr 2011, In: Basic & Clinical Pharmacology & Toxicology. 108, 4, p. 285-288 4 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Breast cancer screening: ''reassuring'' the worried well?
Brodersen, John Brandt, Siersma, Volkert Dirk & Ryle, M., May 2011, In: Scandinavian Journal of Public Health. 39, 3, p. 326-332 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Similar cardiovascular risk factor profile in screen-detected and known type 2 diabetic subjects
Heldgaard, P. E., Henriksen, J. E., Sidelmann, J. J., Olivarius, Niels de Fine, Siersma, Volkert Dirk & Gram, J. B., Jun 2011, In: Scandinavian Journal of Primary Health Care. 29, 2, p. 85-91 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Infants' symptoms of illness assessed by parents: Impact and implications
Ertmann, Ruth Kirk, Siersma, Volkert Dirk, Reventlow, Susanne & Söderström, M., 1 Jun 2011, In: Scandinavian Journal of Primary Health Care. 29, 2, p. 67-74 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The relationship between HbA(1c) level, symptoms and self-rated health in type 2 diabetic patients
Nielsen, Anni Brit Sternhagen, Gannik, D. E., Siersma, Volkert Dirk & Olivarius, Niels de Fine, Sep 2011, In: Scandinavian Journal of Primary Health Care. 29, 3, p. 157-164 8 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
- 2012
- 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
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
Impact of Social Capital on 8-year Mortality Among Older People in 34 Danish Municipalities
Poulsen, T., Siersma, Volkert Dirk, Christensen, Ulla, Lund, Rikke, Vass, Mikkel & Avlund, K., 2012, In: Journal of Aging and Health. 24, p. 1202-1222 20 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Omkostningsanalyse af sundhedsudgifter ved Danish Lung Cancer Screening Trial, DLCST - en registerundersøgelse
Rasmussen, J. F., Brodersen, John Brandt, Siersma, Volkert Dirk, Saghir, Z., Dirksen, A. & Pedersen, J. H., 2012, København: Ministeriet for Sundhed og Forebyggelse.Research output: Book/Report › Report › Research
- Published
Psychosocial consequences of allocation to lung cancer screening: a randomised controlled trial
Aggestrup, L. M., Hestbech, Mie Sara, Siersma, Volkert Dirk, Pedersen, J. H. & Brodersen, John Brandt, 2012, In: B M J Open. 2, e000663.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Short-term practice effects and variability in cognitive testing in a healthy elderly population
Krenk, L., Rasmussen, L. S., Siersma, Volkert Dirk & Kehlet, Henrik, 2012, In: Experimental Gerontology. 47, 6, p. 432–436 5 p.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 Astonishing Hypothesis (Letter)
Olivarius, Niels de Fine & Siersma, Volkert Dirk, 2012, In: Primary Care Diabetes.Research output: Contribution to journal › Letter › Research
- Published
The majority of sick children receive paracetamol during the winter
Ertmann, Ruth Kirk, Møller, J. J., Waldorff, Frans Boch, Siersma, Volkert Dirk, Reventlow, Susanne & Söderström, M., 2012, In: Danish Medical Journal. 59, 12, p. A4555Research output: Contribution to journal › Journal article › Research › peer-review
- 2013
- Published
A three-year follow-up on the efficacy of psychosocial interventions for patients with mild dementia and their caregivers: the multicentre, rater-blinded, randomized Danish Alzheimer Intervention Study (DAISY).
Phung, K. T. T., Waldorff, Frans Boch, Buss, D. V., Eckermann, A., Keiding, N., Rishøj, S., Siersma, Volkert Dirk, Sørensen, J., Søgaard, R., Sørensen, L. V., Vogel, Asmus & Waldemar, Gunhild, 2013, In: B M J Open. 3, 11Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Amputations and foot ulcers in patients newly diagnosed with Type 2 diabetes mellitus and observed for 19 years. The role of age, gender and co-morbidity
Bruun, C., Siersma, Volkert Dirk, Guassora, Ann Dorrit, Holstein, P. & Olivarius, Niels de Fine, 2013, In: Diabetic Medicine Online. 30, p. 964-972 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
Association between urinary markers of nucleic acid oxidation and mortality in type 2 diabetes: a population-based cohort study.
Brødbæk, K., Siersma, Volkert Dirk, Henriksen, T., Weimann, A., Petersen, M., Andersen, J. T., jiminez-Solem, E., Hansen, Lars J, Henriksen, J. E., Bonnema, S. J., Olivarius, Niels de Fine & Poulsen, Henrik Enghusen, 2013, In: Diabetes Care. 36, p. 669-676 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
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. 377-387Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- Published
Eosinophilia in routine blood samples and the subsequent risk of hematological malignancies and death
Andersen, Christen Bertel L, Siersma, Volkert Dirk, Hasselbalch, H., Lindegaard, H., Vestergaard, H., Felding, P., Olivarius, Niels de Fine & Bjerrum, O. W., 2013, In: American Journal of Hematology. 88, 10, p. 843-847Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Family matters: Parental-acquired brain injury and child functioning
Kieffer-Kristensen, R., Siersma, Volkert Dirk & Teasdale, T. W., 2013, In: NeuroRehabilitation. 32, 1, p. 59-68 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Health care experiences in infancy and subsequent frequent illness in 1-year old children
Ertmann, Ruth Kirk, Siersma, Volkert Dirk, Reventlow, Susanne & Söderström, M., 2013, In: Health. 5, 2, p. 259-266 8 p.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
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
Long-term psychosocial consequences of false-positive screening mammography – a cohort study with 3-year follow-up.
Brodersen, John Brandt & Siersma, Volkert Dirk, 2013, In: Annals of Family Medicine. 11, p. 106-115 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Marked differences in GPs' diagnosis of pneumonia between Denmark and Spain: a cross-sectional study.
Christensen, S. F., Jørgensen, L. C., Cordoba Currea, Gloria Cristina, Llor, C., Siersma, Volkert Dirk & Bjerrum, Lars, 2013, In: Primary Care Respiratory Journal. 22, 4, p. 454-458 5 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
- 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
Progression of Mobility Limitations in Old Age: The Combined Effect of Mobility-Related Fatigue and Socio-Economic Position
Nilsson, Charlotte Juul, Siersma, Volkert Dirk, Mänty, M. R., Lund, Rikke, Vass, Mikkel & Avlund, K., 2013.Research output: Contribution to conference › Conference abstract for conference › Research
- 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
Structured personal care of type 2 diabetes: a 19 year follow-up of the study Diabetes Care in General Practice (DCGP).
Hansen, Lars J, Siersma, Volkert Dirk, Beck-Nielsen, H. & Olivarius, Niels de Fine, 2013, In: Diabetologia. 56, 6, p. 1243-1253Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The development and validation of a multidimensional sum-scaling questionnaire to measure patient-reported outcomes in acute respiratory tract infections in primary care: the Acute Respiratory Tract Infection Questionnaire: ARTIQ
Aabenhus, Rune Munck, Thorsen, Hanne, Siersma, Volkert Dirk & Brodersen, John Brandt, 2013, In: Value in Health. 16, p. 987-992 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The effectiveness of computer reminders for improving quality assessment for point-of-care testing in general practice - a randomized controlled trial.
Kousgaard, Marius Brostrøm, Siersma, Volkert Dirk, Reventlow, Susanne, Ertmann, Ruth Kirk, Felding, P. & Waldorff, Frans Boch, 2013, In: Implementation Science. 8, 47Research output: Contribution to journal › Journal article › Research › peer-review
- 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
The predictive value of self-rated health in the presence of subjective memory complaints on permanent nursing home placement in elderly primary care patients over 4-year follow-up.
Nielsen, Anni Brit Sternhagen, Siersma, Volkert Dirk, Waldemar, Gunhild & Waldorff, Frans Boch, 2013, In: Age and Ageing. 43, 1, p. 50-57Research output: Contribution to journal › Journal article › Research › peer-review
- Published
What fraction of women with false-positive screening mammography results reported a higher score than women with normal screening results?
Brodersen, John Brandt & Siersma, Volkert Dirk, 2013, In: Annals of Family Medicine.Research output: Contribution to journal › Comment/debate › Research
- Published
Hovedparten af syge børn får paracetamol i løbet af en vinterperiode
Ertmann, Ruth Kirk, Møller, J. J., Waldorff, Frans Boch, Siersma, Volkert Dirk, Reventlow, Susanne & Söderström, M., 14 Jan 2013, In: Ugeskrift for Laeger. 175, 3, p. 130 1 p.Research output: Contribution to journal › Journal article › Research
- 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
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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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329
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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