Volkert Dirk Siersma

Volkert Dirk Siersma

!!Statistiker, External Lecturer

ORCID: 0000-0003-1941-2681

Publication year:
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326 - 350 out of 380Page size: 25
  1. 2011
  2. 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

  3. 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

  4. 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

  5. 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

  6. 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. 79

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

  7. 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

  8. 2010
  9. 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

  10. Published

    Paracetamol for feverish children: parental motives and experiences

    Jensen, J. F., Tonnesen, L. L., Söderström, M., Thorsen, Hanne & Siersma, Volkert Dirk, 2010, In: Scandinavian Journal of Primary Health Care. 28, 2, p. 115-120 6 p.

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

  11. Published

    Fitness consultations in routine care of patients with type 2 diabetes in general practice: an 18-month non-randomised intervention study

    Lohmann, H., Siersma, Volkert Dirk & Olivarius, Niels de Fine, 2010, In: B M C Family Practice. 11, p. 83-92 10 p.

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

  12. 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

  13. Published

    Predictors of mortality of patients newly diagnosed with clinical type 2 diabetes: a 5-year follow up study

    Olivarius, Niels de Fine, Siersma, Volkert Dirk, Nielsen, Anni Brit Sternhagen, Hansen, L. J., Rosenvinge, L. & Mogensen, C. E., 1 Jan 2010, In: B M C Endocrine Disorders. 10, p. 14

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

  14. Published

    Monte Carlo and bootstrap evaluation of model search in graphical models for ordinal data

    Siersma, Volkert Dirk & Kreiner, Svend, 2010.

    Research output: Contribution to conference › Conference abstract for conference › Research

  15. 2009
  16. Published

    Communicating Test Results: Considering diagnostic and screening tests

    Austin, L., Siersma, Volkert Dirk, Jensen, H. L. & Brodersen, John Brandt, 2009.

    Research output: Contribution to conference › Conference abstract for conference › Research

  17. Published

    Social-cognitive and school factors in initiation of smoking among adolescents: a prospective cohort study

    Bidstrup, P. E., Frederiksen, K., Siersma, Volkert Dirk, Mortensen, Erik Lykke, Ross, L., Vinther-Larsen, M., Grønbæk, M. & Johansen, Christoffer, 2009, In: Cancer Epidemiology, Biomarkers & Prevention. 18, 2, p. 384-92 8 p.

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

  18. Published

    16-year excess all-cause mortality of newly diagnosed type 2 diabetic patients: a cohort study

    Hansen, Lars J, Olivarius, Niels de Fine & Siersma, Volkert Dirk, 2009, In: BMC Public Health. 9, p. 400

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

  19. Published

    GP and staff evaluation of the maturity matrix as a tool to assess and improve organizational development in primary care

    Loegstrup, L., Edwards, A., Waldorff, Frans Boch, Siersma, Volkert Dirk, Buch, M. S. & Eriksson, T., 2009, In: International Journal of Health Care Quality Assurance. 22, 7, p. 684-701 18 p.

    Research output: Contribution to journal › Journal article › Research

  20. Published

    The impact of changes in self-rated general health on 28-year mortality among middle-aged Danes

    Nielsen, Anni Brit Sternhagen, Siersma, Volkert Dirk, Kreiner, Svend, Hiort, L. C., Drivsholm, Thomas, Eplov, L. F. & Hollnagel, Hanne, 2009, In: Scandinavian Journal of Primary Health Care. 27, 3, p. 160-166 7 p.

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

  21. Published

    Changes in levels of haemoglobin A1c during the first 6 years after diagnosis of clinical type 2 diabetes

    Olivarius, Niels de Fine, Siersma, Volkert Dirk, Hansen, Lars J, Drivsholm, Thomas & Horder, M., 2009, In: Scandinavian Journal of Clinical & Laboratory Investigation. 69, 8, p. 851-857 7 p.

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

  22. Published

    Importance Sampling Strategies for Off-Policy LSTD(1)

    Siersma, Volkert Dirk, 2009, København: Museum Tusculanum. (Research Report, Biostatistisk Afdeling, Institut for Folkesundhedsvidenskab.; No. 9/12).

    Research output: Book/Report › Report › Research

  23. Published

    A Coefficient of Association Between Categorical Variables With Partial or Tentative Ordering of Categories

    Siersma, Volkert Dirk & Kreiner, Svend, 2009, In: Sociological Methods & Research. 38, 2, p. 265-286 21 p.

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

  24. 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. 43

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

  25. 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

  26. 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

  27. 2008
  28. Published

    Social-cognitive and school factors in lifetime smoking among adolescents

    Bidstrup, P. E., Frederiksen, K., Siersma, Volkert Dirk, Mortensen, Erik Lykke, Ross, L., Vinther-Larsen, M., Gronbaek, M. & Johansen, C., 2008, In: Cancer Epidemiology, Biomarkers & Prevention. 17, 8, p. 1862-1871 9 p.

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

  29. Published

    Randomised controlled trial of extraarticular gold bead implantation for treatment of knee osteoarthritis: a pilot study

    Nejrup, K., Olivarius, Niels de Fine, Jacobsen, J. L. & Siersma, Volkert Dirk, Nov 2008, In: Clinical Rheumatology. 27, 11, p. 1363-9 6 p.

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

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ID: 3512987