Volkert Dirk Siersma

Search results

• 2009

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

  Olivarius, N. D. F., Siersma, V., Hansen, L. J., Drivsholm, T. & 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

  7 Citations (Scopus)

• Communicating Test Results: Considering diagnostic and screening tests

  Austin, L., Siersma, V. D., Jensen, H. L. & Brodersen, J., 2009.

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

• 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, F. B., Siersma, V., 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

• Importance Sampling Strategies for Off-Policy LSTD(1)

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

  Research output: Book/Report › Report › Research

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

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

  Research output: Contribution to journal › Journal article › Research › peer-review
  29 Citations (Scopus)

• The effect of reminder letters on the uptake of an e-learning programme on dementia: a randomized trial in general practice

  Waldorff, F. B., Siersma, V., 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

  12 Citations (Scopus)

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

  Nielsen, A. B. S., Siersma, V., Kreiner, S., Hiort, L. C., Drivsholm, T., Eplov, L. F. & Hollnagel, H., 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

  24 Citations (Scopus)
• 2008

  Monte Carlo Evaluation of Model Search in Graphical Models for Ordinal Data

  Siersma, V. & Kreiner, S., 2008, Heidelberg: Physica-Verlag.

  Research output: Book/Report › Report › Research

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

  Nejrup, K., Olivarius, N. D. F., Jacobsen, J. L. & Siersma, V., Nov 2008, In: Clinical Rheumatology. 27, 11, p. 1363-9 6 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  12 Citations (Scopus)

• Self-rated general health among 40-year-old Danes and its association with all-cause mortality at 10-, 20-, and 29 years' follow-up

  Nielsen, A. B. S., Siersma, V., Hiort, L. C., Drivsholm, T., Kreiner, S. & Hollnagel, H., 2008, In: Scandinavian Journal of Public Health. 170, 36, p. 3-11 8 p.

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

  42 Citations (Scopus)

• Social-cognitive and school factors in lifetime smoking among adolescents

  Bidstrup, P. E., Frederiksen, K., Siersma, V., Mortensen, E. L., 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

  7 Citations (Scopus)

• Studies in the interaction between disease development and interventions

  Siersma, V., 2008, In: Maanedsskrift for Praktisk Laegegerning. p. -

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

• Studies in the interactions between disease development and interventions

  Siersma, V. D., 2008, Museum Tusculanum.

  Research output: Book/Report › Ph.D. thesis › Research

• Vaegtanamnesen for patienter med nyopdaget type 2-diabetes--sekundaerpublikation

  Translated title of the contribution: Weight history of patients with newly diagnosed type 2 diabetes--secondary publicationOlivarius, N. D. F., Richelsen, B., Siersma, V., Andreasen, A. H. & Beck-Nielsen, H., 2008, In: Ugeskrift for læger. 170, 45, p. 3640-3 3 p.

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

• Weight history of patients with newly diagnosed Type 2 diabetes

  Olivarius, N. D. F., Richelsen, B., Siersma, V., Andreasen, A. H. & Beck-Nielsen, H., 2008, In: Diabetic Medicine. 25, 8, p. 933-41 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  13 Citations (Scopus)
• 2007

  A coefficient of association between categorical variables with partial or tentative ordering of categories

  Siersma, V. & Kreiner, S., 2007, Juli, 2007 [Biostatistisk Afdeling rapport 07-10] ed. Museum Tusculanum.

  Research output: Book/Report › Report › Research

• Multivariable modelling for meta-epidemiological assessment of the association between trial quality and treatment effects estimated in randomized clinical trials

  Siersma, V. D., Als-Nielsen, B., Chen, W., Hilden, J., 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

  60 Citations (Scopus)

• Psychometric properties of brief indexes designed to measure social-cognitive predictors of smoking initiation

  Hansen, P. E., Siersma, V. D., Ross, L., Mortensen, E. L., Riegels, M., Tjornhøj-Thomsen, T. & Johansen, C., 2007, In: Drug and Alcohol Dependence. 88, 1, p. 64-74 10 p.

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

  10 Citations (Scopus)

• Simulating from graphical models for ordinal categorical data

  Siersma, V. & Kreiner, S., 2007, Museum Tusculanum.

  Research output: Book/Report › Report › Research

• Weight change og change in weight trend. Differences in analytical approaches

  Olivarius, N. D. F. & Siersma, V., 2007, In: Diabetes, Obesity and Metabolism. 9, p. 915-916 1 p.

  Research output: Contribution to journal › Letter › Research › peer-review
• 2006

  Changes in patient weight and the impact of antidiabetic therapy during the first 5 years after diagnosis of diabetes mellitus

  Olivarius, N. D. F., Andreasen, A. H., Siersma, V. D., Richelsen, B. & Beck-Nielsen, H., 2006, In: Diabetologia. 49, 9, p. 2058-2067 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  29 Citations (Scopus)

• Vægtforløbet og betydningen af antidiabetisk behandling de første fem år efter diabetesdiagnosen - sekundærpublikation

  Olivarius, N. D. F., Andreasen, A. H., Siersma, V. D., Richelsen, B. & Beck-Nielsen, H., 2006, In: Ugeskrift for læger. 168/45, p. 3913-3916

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2005

  General practitioners need to pay more attention to their poorly controlled type 2 diabetic patients

  Hansen, L. J., Olivarius, N. D. F. & Siersma, V. D., 2005, In: European Journal of General Practice. 11, p. 81-83

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

  1 Citation (Scopus)

• Is peri-operative cortisol secretion related to post-operative cognitive dysfunction

  Rasmussen, L. S., O'Brien, J. T., Silverstein, J. H., Johnson, T. W., Siersma, V. D., Canet, J., Jolles, J., Hanning, C. D., Kuipers, H. M., Abildstrøm, H., Papaionnou, A., Raeder, J., Yli-Hankala, A., Sneyd, J. R., Munoz, L. & Møller, J. T., 2005, In: Acta Anaesthesiologica Scandinavica. 49, p. 1225-1231

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

  87 Citations (Scopus)

• Symptoms, signs and complications in newly diagnosed type 2 diabetic patients, and their relationship to glycaemia, blood pressure and weight

  Drivsholm, T. B., Olivarius, N. D. F., Nielsen, A. B. S. & Siersma, V. D., 2005, In: Diabetologia. 48, p. 210-214

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

  83 Citations (Scopus)
• 2004

  Apolipoprotein E Genotype and Cognitive Dysfunction after Noncardiac Surgery

  Abildstrøm, H., Christiansen, M., Siersma, V. D. & Rasmussen, L. S., 2004, In: Anesthesiology. 101, p. 855-861

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

  85 Citations (Scopus)

• Cognitive dysfunction after minor surgery in the elderly

  Canet, J., Raeder, J., Rasmussen, L. S., Enlund, M., Kuipers, H. M., Hanning, C. D., Jolles, J., Korttila, K., Siersma, V. D., Dodds, C., Abildstrøm, H., Sneyd, J. R., Vila, P., Johnson, T. D., Corsini, L. M., Silverstein, J. H., Nielsen, I. K. & Møller, J. T., 2004, In: Acta Anaesthesiologica Scandinavica. 47, p. 1204-1210

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

• Constitutive and ligand-induced TCR degradation

  von Essen, M., Bonefeld, C. M., Siersma, V., Rasmussen, A. B., Lauritsen, J. P. H., Nielsen, B. L. & Geisler, C., 2004, In: Journal of Immunology. 173, 1, p. 384-93 9 p.

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

  48 Citations (Scopus)

• Increased risk of developing diabetes in depressive and bipolar disorders?

  Kessing, L. V., Nilsson, F. M., Siersma, V. D. & Andersen, P. K., 2004, In: Journal of Psychiatric Research. 38, p. 395-402

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

  26 Citations (Scopus)

• Individualised treatment goals in diabetes care

  Hansen, L. J., Olivarius, N. D. F., Siersma, V. D., Drivsholm, T. B. & Andersen, J. S., 2004, In: Scandinavian Journal of Primary Health Care. 22, p. 71-77

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

  11 Citations (Scopus)

• Peripheral vascular disease is associated with reduced glycosuria in newly diagnosed type 2 diabetic patients.

  Olivarius, N. D. F., Holstein-Rathlou, N. H., Siersma, V., Witt, K., Vestbo, E., Andreasen, A. H. & Mogensen, C. E., 2004, In: Diabetes & Metabolism. 30, 3, p. 269-74 5 p.

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

  2 Citations (Scopus)

• Postoperative cognitive dysfunction: true deterioration versus random variation

  Rasmussen, L. S. & Siersma, V. D., 2004, In: Acta Anaesthesiologica Scandinavica. 48, p. 1137-1143

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

  67 Citations (Scopus)
• 2003

  Does anaesthesia cause postoperative cognitive dysfunction? A randomised study of regional versus general anaesthesia in 438 elderly patients

  Rasmussen, L. S., Johnson, T. D., Kuipers, H. M., Kristensen, D., Siersma, V. D., Vila, P., Jolles, J., Papaioannaou, A., Abildstrøm, H., Silverstein, J. H., Bonal, J. A., Raeder, J., Nielsen, I. K., Korttila, K., Munoz, L., Dodds, C., Hanning, C. D. & Møller, J. T., 2003, In: Acta Anaesthesiologica Scandinavica. 47, p. 260-266

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

  480 Citations (Scopus)

• Encouraging structured personalised diabetes care in general practice

  Hansen, L. J., Olivarius, N. D. F., Siersma, V. D., Beck-Nielsen, H. & Pedersen, P. A., 2003, In: Scandinavian Journal of Primary Health Care. 21, p. 89-95 6 p.

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

  11 Citations (Scopus)

• No increased risk of developing depression in diabetes compared to other chronic illness

  Kessing, L. V., Nilsson, F. M., Siersma, V. D. & Andersen, P. K., 2003, In: Diabetes Research and Clinical Practice. 62, p. 113-121

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

  21 Citations (Scopus)

• Postoperative Cognitive Dysfunction: Overinterpretation of Data?: In Reply:-

  Johnson, T., Rasmussen, L., Korttila, K., Siersma, V. D. & Canet, J., 2003, In: Anesthesiology. 98, p. 1295

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

• Respiratory syncytial virus infection - risk factors for hospital admission: a case-control study

  Nielsen, H. E., Siersma, V. D., Andersen, S., Gahrn-Hansen, B., Mordhorst, C. H., Nørgaard-Pedersen, B., Røder, B., Sørensen, T. L., Temme, R. & Vestergaard, B. F., 2003, In: Acta Paediatr.. 92, p. 1314-1321

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

  81 Citations (Scopus)
• 2002

  Endo- and exocytic rate constants for spontaneous and protein kinase C-activated T cell receptor cycling

  Menné, C., Møller Sørensen, T., Siersma, V., von Essen, M., Ødum, N. & Geisler, C., 2002, In: European Journal of Immunology. 32, 3, p. 616-26 10 p.

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

  36 Citations (Scopus)

• Postoperative Cognitive Dysfunction in Middle-aged Patients

  Johnson, T., Monk, T., Rasmussen, L. S., Abildstrøm, H., Houx, P., Korttila, K., Kuipers, H. M., Hanning, C. D., Siersma, V. D., Kristensen, D., Canet, J., Ibanaz, M. T. & Møller, J. T., 2002, In: Anesthesiology. 96, p. 1351-7

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

  357 Citations (Scopus)