Volkert Dirk Siersma

Volkert Dirk Siersma

!!Statistiker, External Lecturer

ORCID: 0000-0003-1941-2681

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  1. Published

    Effect of Total Dose of Lidocaine on Duration of Adductor Canal Block, Assessed by Different Test Methods: A Report of Two Blinded, Randomized, Crossover Studies in Healthy Volunteers

    Jæger, P., Koscielniak-Nielsen, Z. J., Hilsted, K. L., Grevstad, U., Siersma, Volkert Dirk, Fabritius, M. L. & Dahl, J. B., Oct 2016, In: Anesthesia and Analgesia. 123, 4, p. 1026-1032 7 p.

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

  2. 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

  3. 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

  4. Published

    Effect of point-of-care susceptibility testing in general practice on appropriate prescription of antibiotics for patients with uncomplicated urinary tract infection: a diagnostic randomised controlled trial

    Holm, Anne, Cordoba Currea, Gloria Cristina, Sørensen, Tina Møller, Jessen, Lisbeth Rem, Frimodt-Møller, N., Siersma, Volkert Dirk & Bjerrum, Lars, Oct 2017, In: B M J Open. 7, 10, 9 p., e018028.

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

  5. Published

    Effectiveness of a tailored intervention to reduce antibiotics for urinary tract infections in nursing home residents: a cluster, randomised controlled trial

    Arnold, Sif Helene, Jensen, J. N., Bjerrum, Lars, Siersma, Volkert Dirk, Bang, C. W., Kousgaard, Marius Brostrøm & Holm, Anne, 2021, In: Lancet Infectious Diseases. 21, 11, p. 1549-1556 8 p.

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

  6. Published

    Effectiveness of an adaptive, multifaceted intervention to enhance care for patients with complex multimorbidity in general practice: protocol for a pragmatic cluster randomised controlled trial (the MM600 trial)

    Holm, Anne, Lyhnebeck, A. B., Rozing, Maarten Pieter, Buhl, S. F., Willadsen, Tora Grauers, Prior, A., Christiansen, Ann-Kathrin Lindahl, Kristensen, J., Andersen, John Sahl, Waldorff, Frans Boch, Siersma, Volkert Dirk, Brodersen, John Brandt, Reventlow, Susanne & MM600 project team, M. P. T., 2024, In: BMJ Open. 14, 2, 11 p., e077441.

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

  7. Published

    Effectiveness of promotion and support for physical activity maintenance post total hip arthroplasty-study protocol for a pragmatic, assessor-blinded, randomized controlled trial (the PANORAMA trial)

    Bieler, T., Magnusson, Stig Peter, Siersma, Volkert Dirk, Rinaldo, M., Schmiegelow, M. T., Beck, T., Krifa, A., Kjaer, B. H., wcr491, wcr491 & Midtgaard, Julie, 2022, In: Trials. 23, 1, 17 p., 647.

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

  8. 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. 743-751

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

  9. Published

    Effects of Heavy Slow Resistance Training Combined With Corticosteroid Injections or Tendon Needling in Patients With Lateral Elbow Tendinopathy A 3-Arm Randomized Double-Blinded Placebo-Controlled Study

    Couppé, Christian, Døssing, S., Bulow, P. M., Siersma, Volkert Dirk, Zilmer, C. K., Bang, C. W., Høffner, Rikke, Kracht, M., Hogg, P., Edstrom, G., Kjær, Michael & Magnusson, Stig Peter, 2022, In: American Journal of Sports Medicine. 50, 10, p. 2787-2796 10 p.

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

  10. Published

    Effects of Implementing the Short-Term Assessment of Risk and Treatability for Mechanical Restraint in a Forensic Male Population: A Stepped-Wedge, Cluster-Randomized Design

    Hvidhjelm, J., Brandt-Christensen, M., Delcomyn, C., Møllerhøj, J., Siersma, Volkert Dirk & Bak, J., 2022, In: Frontiers in Psychiatry. 13, 9 p., 822295.

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

  11. Published

    Effects of numerical information on intention to participate in cervical screening among women offered HPV vaccination: a randomised study

    Hestbech, Mie Sara, Gyrd-Hansen, D., Kragstrup, Jakob, Siersma, Volkert Dirk & Brodersen, John Brandt, 15 Nov 2016, In: Scandinavian Journal of Primary Health Care. 34, 4, p. 401-419 19 p.

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

  12. 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

  13. 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. e4693

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

  14. Published

    Electrical somatosensory stimulation followed by motor training of the paretic upper limb in acute stroke: study protocol for a randomized controlled trial

    Ghaziani, E., Couppé, Christian, Henkel, C., Siersma, Volkert Dirk, Søndergaard, M., Christensen, Hanne Krarup & Magnusson, Stig Peter, 23 Feb 2017, In: Trials. 18, p. 1-9 9 p., 84.

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

  15. Published

    Encouraging structured personalised diabetes care in general practice

    Hansen, Lars J, Olivarius, Niels de Fine, Siersma, Volkert Dirk, 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

  16. Published

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

    Bonefeld, Charlotte Menne, Møller Sørensen, T., Siersma, Volkert Dirk, von Essen, Marina Rode, Ødum, Niels & Geisler, Carsten, 2002, In: European Journal of Immunology. 32, 3, p. 616-26 10 p.

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

  17. 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. 843-847

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

  18. Published

    Eosinophilia in routine blood samples as a biomarker for solid tumor development: A study based on The Copenhagen Primary Care Differential Count (CopDiff) Database

    Andersen, Christen Bertel L, Siersma, Volkert Dirk, Hasselbalch, H. C., Lindegaard, H., Vestergaard, H., Felding, P., Olivarius, Niels de Fine & Bjerrum, O. W., 2014, In: Acta Oncologica. 53, 9, p. 1245-1250 6 p.

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

  19. Published

    Estimation of Overdiagnosis of Lung Cancer in Low-Dose Computed Tomography Screening: A Secondary Analysis of the Danish Lung Cancer Screening Trial

    Heleno, B., Siersma, Volkert Dirk & Brodersen, John Brandt, 2018, In: JAMA Internal Medicine. 178, 10, p. 1420-1422 3 p.

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

  20. Published

    Evaluation of the Danish version of the prenatal parental reflective functioning questionnaire in early pregnancy as a screening tool

    Schwartz, M., Rasmussen, Ida Scheel, Wilson, Philip Michael John, Overbeck, Gritt & Siersma, Volkert Dirk, 2023, In: Infant Mental Health Journal. 44, 3, 19 p.

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

  21. 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

  22. Published

    Exercise induced effects on muscle function and range of motion in patients with hip osteoarthritis

    Bieler, T., Siersma, Volkert Dirk, Magnusson, Stig Peter, Kjær, Michael & Beyer, N., Jan 2018, In: Physiotherapy Research International. 23, 1, 9 p., e1697.

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

  23. Published

    Exploring the concurrent validity of the nationwide assessment of permanent nursing home residence in Denmark: A cross-sectional data analysis using two administrative registries

    Bebe, Anna, Nielsen, Anni Brit Sternhagen, Willadsen, Tora Grauers, Søndergaard, J., Siersma, Volkert Dirk, Nicolaisdottir, Dagny Ros, Kragstrup, Jakob & Waldorff, Frans Boch, 29 Aug 2017, In: B M C Health Services Research. 17, p. 1-7 7 p., 607.

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

  24. 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

  25. Published

    Factors in early pregnancy predicting pregnancy-related pain in the second and third trimester

    Ertmann, Ruth Kirk, Nicolaisdottir, Dagny Ros, Siersma, Volkert Dirk, Overbeck, Gritt, de Voss, Sarah Strøyer, Modin, F. A. & Lutterodt, Melissa C., 2023, In: Acta Obstetricia et Gynecologica Scandinavica. 102, 10, p. 1269-1280 12 p.

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

  26. 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

  27. Published

    Family wellbeing in general practice: a study protocol for a cluster-randomised trial of the web-based resilience programme on early child development

    Overbeck, Gritt, Kragstrup, Jakob, Gørtz, Mette, Rasmussen, Ida Scheel, mxb897, mxb897, Siersma, Volkert Dirk, de Voss, Sarah Strøyer, Ertmann, Ruth Kirk, Shahrzad, S., Appel, Clara Lundmark & Wilson, Philip Michael John, 2023, In: Trials. 24, 1, 12 p., 7.

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

  28. 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

  29. 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

  30. Published

    Follicular lymphoma of the ocular adnexal region: A nation-based study

    Rasmussen, P. K., Ralfkiaer, E., Prause, J. U., Sjö, Lene Dissing, Specht, Lena, Rossing, H. H., Siersma, Volkert Dirk & Heegaard, Steffen, Mar 2015, In: Acta Ophthalmologica. 93, 2, p. 184-191 8 p.

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

  31. 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-e56

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

  32. Published

    Four of five frequently used orthopedic PROMs possess inadequate content validity: a COSMIN evaluation of the mHHS, HAGOS, IKDC-SKF, KOOS and KNEES-ACL

    Hansen, C. F., Jensen, J., Odgaard, Anders, Siersma, Volkert Dirk, Comins, J. D., Brodersen, John Brandt & Krogsgaard, Michael R., 2022, In: Knee Surgery, Sports Traumatology, Arthroscopy. 30, p. 3602–3615 14 p.

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

  33. 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

  34. 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

  35. Published

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

    Hansen, Lars J, Olivarius, Niels de Fine & Siersma, Volkert Dirk, 2005, In: European Journal of General Practice. 11, p. 81-83

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

  36. Published

    Good quality of oral anticoagulation treatment in general practice using international normalised ratio point of care testing.

    Løkkegaard, T., Pedersen, T. H., Lind, B., Siersma, Volkert Dirk & Waldorff, Frans Boch, Feb 2015, In: Danish Medical Journal. 62, 2, p. 1-6 6 p., A5010.

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

  37. 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

  38. Published

    Health-Related Quality of Life Predicts Major Amputation and Death, but Not Healing, in People With Diabetes Presenting With Foot Ulcers: The Eurodiale Study

    Siersma, Volkert Dirk, Thorsen, Hanne, Holstein, P. E., Kars, M., Apelqvist, J., Jude, E. B., Piaggesi, A., Bakker, K., Edmonds, M., Jirkovska, A., Mauricio, D., Ragnarson Tennvall, G., Reike, H., Spraul, M., Uccioli, L., Urbancic, V., Acker, K., Baal, K. & Schaper, N. C., Mar 2014, In: Diabetes Care. 37, 3, p. 694-700 7 p.

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

  39. 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

  40. Published

    Health-Related Quality-of-Life in patients with chronic rheumatic disease after a multidisciplinary rehabilitation regimen

    Couppé, C., Comins, J., Beyer, N., Hansen, S. E., Stodolsky, D. S. & Siersma, Volkert Dirk, Feb 2017, In: Quality of Life Research. 26, 2, p. 381–391 11 p.

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

  41. Published

    Healthcare costs in the Danish randomised controlled lung cancer CT-screening trial: A registry study

    Rasmussen, J. F., Siersma, Volkert Dirk, Pedersen, J. H., Heleno, B., Saghir, Z. & Brodersen, John Brandt, Mar 2014, In: Lung Cancer. 83, 3, p. 347-355 9 p.

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

  42. Published

    Helicopter vs. ground transportation of patients bound for primary percutaneous coronary intervention

    Funder, K. S., Rasmussen, L. S., Siersma, Volkert Dirk, Lohse, N., Hesselfeldt, R., Pedersen, F., Hendriksen, O. M. & Steinmetz, Jacob, 2018, In: Acta Anaesthesiologica Scandinavica. 62, 4, p. 568-578 11 p.

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

  43. 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

  44. Published

    How does HPV vaccination status relate to risk perceptions and intention to participate in cervical screening? a survey study

    Hestbech, Mie Sara, Gyrd-Hansen, D., Kragstrup, Jakob, Siersma, Volkert Dirk & Brodersen, John Brandt, 3 Aug 2016, In: BMC Public Health. 16, p. 1-11 11 p., 708.

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

  45. Published

    How to translate and locally adapt a PROM: Assessment of cross-cultural differential item functioning

    Krogsgaard, Michael R., Brodersen, John Brandt, Christensen, Karl Bang, Siersma, Volkert Dirk, Jensen, J., Hansen, C. F., Engebretsen, L., Visnes, H., Forssblad, M. & Comins, J. D., 2021, In: Scandinavian Journal of Medicine & Science in Sports. 31, 5, p. 999-1008 10 p.

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

  46. Published

    How well do general practitioners know their elderly patients' social relations and feelings of loneliness?

    Due, Tina Drud, Sandholdt, H., Siersma, Volkert Dirk & Waldorff, Frans Boch, 26 Feb 2018, In: BMC Family Practice. 19, 8 p., 34.

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

  47. 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

  48. Published

    Identifying practice-related factors for high-volume prescribers of antibiotics in Danish general practice

    Aabenhus, Rune Munck, Siersma, Volkert Dirk, Sandholdt, H., Køster-Rasmussen, Rasmus, Hansen, M. P. & Bjerrum, Lars, 1 Aug 2017, In: Journal of Antimicrobial Chemotherapy. 72, 8, p. 2385-2391 7 p.

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

  49. 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

  50. 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

  51. Published

    In hip osteoarthritis, Nordic Walking is superior to strength training and home based exercise for improving function

    Bieler, T., Siersma, Volkert Dirk, Magnusson, Stig Peter, Kjær, Michael, Christensen, H. E. & Beyer, N., Aug 2017, In: Scandinavian Journal of Medicine & Science in Sports. 27, 8, p. 873–886 14 p.

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

  52. Published

    Inappropriate antibiotic prescribing and demand for antibiotics in patients with upper respiratory tract infections is hardly different in female versus male patients as seen in primary care

    Bagger, K., Nielsen, Anni Brit Sternhagen, Siersma, Volkert Dirk & Bjerrum, Lars, 2015, In: The European Journal of General Practice. 21, 2, p. 118-123 6 p.

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

  53. 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

  54. Published

    Increased Incidence of Mental Disorders in Children with Cataract: Findings from a Population-based Study

    AL-BAKRI, M. O. U. G., SKOVGAARD, A. M., Bach-Holm, Daniella, LARSEN, D. A., Siersma, Volkert Dirk & Kessel, Line, 2022, In: American Journal of Ophthalmology. 236, p. 204-211 8 p.

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

  55. Published

    Increased healing in diabetic toe ulcers in a multidisciplinary foot clinic—An observational cohort study

    Almdal, Thomas Peter, Nielsen, A. A., Nielsen, K. E., Jørgensen, M. E., Rasmussen, A., Hangaard, S., Siersma, Volkert Dirk & Holstein, P., 2015, In: Diabetes Research and Clinical Practice. 110, 3, p. 315-321 7 p.

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

  56. Published

    Increased health care utilisation in international adoptees

    Graff, H. J., Siersma, Volkert Dirk, Kragstrup, Jakob & Petersson, B., Aug 2015, In: Danish Medical Journal. 62, 8, p. 1-6 6 p., A5111.

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

  57. Published

    Increased risk of developing diabetes in depressive and bipolar disorders?

    Kessing, L. V., Nilsson, F. M., Siersma, Volkert Dirk & Andersen, Per Kragh, 2004, In: Journal of Psychiatric Research. 38, p. 395-402

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

  58. Published

    Individualised treatment goals in diabetes care

    Hansen, Lars J, Olivarius, Niels de Fine, Siersma, Volkert Dirk, Drivsholm, Thomas & Andersen, John Sahl, 2004, In: Scandinavian Journal of Primary Health Care. 22, p. 71-77

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

  59. 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

  60. 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

  61. 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

  62. Published

    Influence of educational level on test and treatment for incident hypothyroidism

    Møllehave, Line Tang, Jacobsen, R. K., Linneberg, Allan René, Skaaby, T., Knudsen, Nils Jakob, Jørgensen, T., Kårhus, L. L., Kriegbaum, Margit, Grand, Mia Klinten, Siersma, Volkert Dirk, Lind, B., Andersen, Christen Bertel L, Nygaard, Birte, Medici, B. B., Pedersen, I. B., Ravn-Haren, G. & Thuesen, B. H., 2021, In: Clinical Endocrinology. 94, 6, p. 1025-1034 10 p.

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

  63. Published

    Informasjonsstyrke og utvalgsstørrelse i kvalitative studier

    Malterud, Kirsti, Siersma, Volkert Dirk & Guassora, Ann Dorrit, 2016, In: Fysioterapeuten. 83, 8, p. 31 1 p.

    Research output: Contribution to journal › Journal article › Research

  64. Published

    Intentional Weight Loss and Longevity in Overweight Patients with Type 2 Diabetes: A Population-Based Cohort Study

    Køster-Rasmussen, Rasmus, Simonsen, M. K., Siersma, Volkert Dirk, Henriksen, J. E., Heitmann, Berit & Olivarius, Niels de Fine, 25 Jan 2016, In: PloS one. 11, 1, p. 1-14 14 p., e0146889.

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

  65. 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

  66. Published

    Interplay between financial assets and social relations on decline in physical function and mortality among older people

    Jørgensen, Terese Sara Høj, Lund, Rikke, Siersma, Volkert Dirk & Nilsson, Charlotte Juul, 2018, In: European Journal of Ageing. 15, 2, p. 133–142 10 p.

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

  67. Published

    Interpretation of HbA1c in primary care and potential influence of anaemia and chronic kidney disease: an analysis from the Copenhagen Primary Care Laboratory (CopLab) Database

    Borg, Rikke, Persson, F., Siersma, Volkert Dirk, Lind, B., de Fine Olivarius, N. & Andersen, Christen Bertel L, 2018, In: Diabetic Medicine. 35, 12, p. 1700-1706 7 p.

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

  68. Published

    Is it okay to choose to receive bad news by telephone? An observational study on psychosocial consequences of diagnostic workup for lung cancer suspicion

    Andersen, I. C., Siersma, Volkert Dirk, Marsaa, K., Preisel, N., Høegholm, A., Brodersen, John Brandt & Bodtger, U., 2022, In: Acta Oncologica. 61, 12, p. 1446-1453

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

  69. Published

    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, Volkert Dirk, 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

  70. 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

  71. Published

    Is thrombocytosis a valid indicator of advanced stage and high mortality of gynecological cancer?

    Andersen, Christen Bertel L, Eskelund, C. W., Siersma, Volkert Dirk, Felding, P., Lind, B., Palmblad, J., Bjerrum, O. W., Friis, S., Hasselbalch, H. C. & Olivarius, Niels de Fine, Nov 2015, In: Gynecologic Oncology. 139, 2, p. 312-318 7 p.

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

  72. Published

    KNEES-ACL has superior responsiveness compared to the most commonly used patient-reported outcome measures for anterior cruciate ligament injury

    Comins, J. D., Siersma, Volkert Dirk, Lind, M., Jakobsen, B. W. & Krogsgaard, Michael R., 2018, In: Knee Surgery, Sports Traumatology, Arthroscopy. 26, 8, p. 2438-2446 9 p.

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

  73. 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

  74. Published

    Labour market attachment dynamics in patients with concussion: a Danish nationwide register-based cohort study

    Graff, H. J., Siersma, Volkert Dirk, Møller, Anne, Waldorff, Frans Boch, Modin, F. A. & Rytter, Hana Malá, 2023, In: BMC Public Health. 23, 1, 11 p., 2493.

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

  75. 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

  76. Published

    Long-term follow-up of trauma patients before and after implementation of a Physician-Staffed Helicopter: a prospective observational study

    Funder, K. S., Rasmussen, L. S., Lohse, N., Siersma, Volkert Dirk, Hesselfeldt, R. & Steinmetz, Jacob, Jan 2016, In: Injury. 47, 1, p. 7-13 7 p.

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

  77. Published

    Long-term functional and structural outcomes in patients with primary congenital glaucoma — A Danish nationwide study

    Brynskov, T., Bach-Holm, Daniella, Kappelgaard, P., Siersma, Volkert Dirk, Pedersen, Karen Bjerg & Kessel, Line, 2024, In: Acta Ophthalmologica. 102, 2, p. 228-237 10 p.

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

  78. Published

    Long-term psychosocial consequences of breast cancer screening – a matched cohort study

    Gram, Emma Grundtvig, Brodersen, John Brandt & Siersma, Volkert Dirk, 2022, In: BMJ Evidence-Based Medicine. 27, Supplement 1, 1 p.

    Research output: Contribution to journal › Conference abstract in journal › Research

  79. 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

  80. Published

    Long-term psychosocial consequences of false-positive screening mammography: a cohort study with follow-up of 12–14 years in Denmark

    Gram, Emma Grundtvig, Siersma, Volkert Dirk & Brodersen, John Brandt, 2023, In: BMJ Open. 8 p.

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

  81. Published

    Long-term success after trabeculotomy in primary congenital glaucoma – a study with up to 35 years follow-up

    Kessel, Line, Pedersen, K. B., Siersma, Volkert Dirk, Kappelgaard, P. & Bach-Holm, Daniella, 2021, In: Acta Ophthalmologica. 99, 4, p. 362-368 7 p.

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

  82. 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

  83. Published

    Major depressive symptoms increase 3-year mortality rate in patients with mild dementia

    Petersen, Jindong Ding, Waldorff, Frans Boch, Siersma, Volkert Dirk, Phung, T. K. T., Bebe, Anna & Waldemar, Gunhild, 6 Apr 2017, In: International Journal of Alzheimer's Disease. 2017, p. 1-9 9 p., 7482094.

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

  84. 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

  85. Published

    Management of dyslipidaemia in individuals with severe mental illness: a population-based study in the Greater Copenhagen Area

    Høgnason Mohr, G., Barcella, C. A., Grand, Mia Klinten, Kriegbaum, Margit, Siersma, Volkert Dirk, Hahn, M. K., Agarwal, S. M., Bakkedal, Catrine, Baandrup, Lone, Knop, Filip Krag, Andersen, C. L. & Ebdrup, Bjørn, 2023, In: Therapeutic Advances in Psychopharmacology. 13, 13 p.

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

  86. 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

  87. Published

    Markers of DNA/RNA damage from oxidation as predictors of a registry-based diagnosis of psychiatric illness in type 2 diabetic patients

    Jørgensen, Anders, Siersma, Volkert Dirk, Davidsen, Annette Sofie, Weimann, A., Henriksen, T., Poulsen, Henrik Enghusen & Olivarius, Niels de Fine, Jan 2018, In: Psychiatry Research. 259, p. 370-376 7 p.

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

  88. Published

    Maternal pain influences her evaluation of recurrent pain in 6- to 11-year-old healthy children

    mxb897, mxb897, Siersma, Volkert Dirk, Nielsen, Kirsten Lykke, Ertmann, Ruth Kirk, Knudsen, Lisbeth E. & Mäkelä, Marjukka, Feb 2016, In: Acta Paediatrica. 105, 2, p. 183-190 8 p.

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

  89. Published

    Maternal stress and placental function, a study using questionnaires and biomarkers at birth

    Dahlerup, B. R., Egsmose, E. L., Siersma, Volkert Dirk, Mortensen, Erik Lykke, Hedegaard, M., Knudsen, Lisbeth E. & Mathiesen, Line, 2018, In: PLOS ONE. 13, 11, 18 p., e0207184.

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

  90. Published

    Measuring bothersome menopausal symptoms: development and validation of the MenoScores questionnaire

    Lund, K. S., Siersma, Volkert Dirk, Christensen, Karl Bang, Waldorff, Frans Boch & Brodersen, John Brandt, 2018, In: Health and Quality of Life Outcomes. 16, 12 p., 97.

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

  91. Published

    Measuring needs-based quality of life and self-perceived health inequity in patients with multimorbidity: investigating psychometric measurement properties of the MultiMorbidity Questionnaire (MMQ) using primarily Rasch models

    Bissenbakker, Kristine Henderson, Siersma, Volkert Dirk, Jønsson, Alexandra Brandt Ryborg, Møller, Anne, Christensen, Karl Bang & Brodersen, John Brandt, 2023, In: Journal of Patient-Reported Outcomes. 7, 1, 15 p., 94.

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

  92. Published

    Menopausal symptoms: Development and dimensionality of the MenoScores Questionnaire (MSQ)

    Lund, K. S., Waldorff, Frans Boch, Siersma, Volkert Dirk & Brodersen, John Brandt, 15 Jun 2016.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  93. 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

  94. Published

    Mental vulnerability before and depressive symptoms during pregnancy and postpartum: a prospective population-based cohort study from general practice

    Ertmann, Ruth Kirk, Lyngsøe, B. K., Nicolaisdottir, Dagny Ros, Kragstrup, Jakob & Siersma, Volkert Dirk, 2022, In: Nordic Journal of Psychiatry. 76, 4, p. 243-249 7 p.

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

  95. Published

    Mental well-being during stages of COVID-19 lockdown among pregnant women and new mothers

    Overbeck, Gritt, Rasmussen, Ida Scheel, Siersma, Volkert Dirk, Kragstrup, Jakob, Ertmann, Ruth Kirk & Wilson, Philip Michael John, 2022, In: BMC Pregnancy and Childbirth. 22, 1, 7 p., 92.

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

  96. Published

    MicroRNA expression analysis and Multiplex ligation-dependent probe amplification in metastatic and non-metastatic uveal melanoma

    Larsen, A., Holst, L. M., Kaczkowski, B., Andersen, M. T., Manfé, V., Siersma, Volkert Dirk, Kolko, Miriam, Kiilgaard, Jens Folke, Winther, Ole, Prause, J. U., Gniadecki, R. & Heegaard, Steffen, 2014, In: Acta Ophthalmologica. 92, 6, p. 541-549

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

  97. Published

    Micronucleus frequency in Danish school children and their mothers from the DEMOCOPHES population.

    Mørck, T. A., Vande Loock, K., Poulsen, M. B., Siersma, Volkert Dirk, Nielsen, J. K. S., Hertel, O., Kirsch-Volders, M. & Knudsen, Lisbeth E., 2016, In: Mutagenesis. 31, 1, p. 1-8 8 p.

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

  98. Published

    Minor amputation does not negatively affect health-related quality of life as compared with conservative treatment in patients with a diabetic foot ulcer: An observational study

    Pickwell, K., Siersma, Volkert Dirk, Kars, M., Apelqvist, J., Bakker, K., Edmonds, M., Holstein, P., Jirkovska, A., Jude, E., Mauricio, D., Piaggesi, A., Reike, H., Spraul, M., Uccioli, L., Urbancic, V., Acker, K. V., Baal, J. V. & Schaper, N., Mar 2017, In: Diabetes - Metabolism: Research and Reviews (Print Edition). 33, 3, 6 p., e2867.

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

  99. Published

    Missing portion sizes in FFQ: alternatives to use of standard portions

    Køster-Rasmussen, Rasmus, Siersma, Volkert Dirk, Halldorson, T. I., Olivarius, Niels de Fine, Henriksen, J. E. & Heitmann, Berit, Aug 2015, In: Public Health Nutrition. 18, 11, p. 1914-1921 8 p.

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

  100. Published

    Mobility Decline in Old Age: The Joint Effect of Mobility-Related Fatigue and Social Relations.

    Nilsson, Charlotte Juul, Siersma, Volkert Dirk, Avlund, K., Vass, Mikkel & Lund, Rikke, 2013.

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

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