Dimitrinka Koleva Nikolova

Research output

Research output per year 1998 2016 2017 2018 2019 2021

• 46 Journal article
• 15 Review
• 3 Letter
• 1 Book chapter
• 2 More
  • 1 Comment/debate
  • 1 Computer programme

Research output per year

Research output per year

Search results

• 2020

  Antibiotics for adults with acute cholecystitis or acute cholangitis or both (Protocol)

  Markotic, F., Grgic, S., Poropat, G., Fox, A., Nikolova, D. K., Vukojevic, K., Jakobsen, J. C. & Gluud, C., 2020, In: Cochrane Database of Systematic Reviews. p. CD013646

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2019

  Acupuncture for chronic hepatitis B

  Kong, D. Z., Liang, N., Yang, G. L., Zhang, Z., Liu, Y., Yang, Y., Liu, Y. X., Wang, Q. G., Zhang, F., Zhang, H. Y., Nikolova, D., Jakobsen, J. C., Gluud, C. & Liu, J., 22 Aug 2019, In: Cochrane Database of Systematic Reviews. 8, p. CD013107

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

  • Acupuncture 100%
  • Chronic Hepatitis B 99%
  • Hepatitis B 35%
  • Hepatitis B e Antigens 21%
  • Mortality 21%

• Essential phospholipids for people with non-alcoholic fatty liver disease (Protocol)

  Varganova, D. L., Pavlov, C. S., Casazza, G., Nikolova, D. K. & Gluud, C., 2019, In: Cochrane Database of Systematic Reviews. 4, p. CD013301

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

• Glucocorticosteroids for people with alcoholic hepatitis (Cochrane review)

  Pavlov, C. S., Varganova, D. L., Casazza, G., Tsochatzis, E., Nikolova, D. & Gluud, C., 15 Aug 2019, In: Terapevticheskii Arkhiv. 91, 8, p. 52-66 15 p.

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

  • Alcoholic Hepatitis 100%
  • Placebos 29%
  • Placebo 25%
  • Quality of Life 18%
  • Alcoholic Liver Diseases 18%

• Radix Sophorae flavescentis versus no intervention or placebo for chronic hepatitis B

  Liang, N., Kong, D. Z., Ma, S. S., Lu, C. L., Yang, M., Feng, L. D., Shen, C., Diao, R. H., Cui, L. J., Lu, X. Y., Nikolova, D., Jakobsen, J. C., Gluud, C. & Liu, J. P., 3 Apr 2019, In: Cochrane Database of Systematic Reviews. 4, 4, p. CD013089 CD013089.

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

  • Chronic Hepatitis B 100%
  • Hepatitis B 90%
  • Placebos 64%
  • Mortality 46%
  • Hepatitis B virus 38%
  4 Citations (Scopus)

• Total serum bile acids or serum bile acid profile, or both, for the diagnosis of intrahepatic cholestasis of pregnancy

  Manzotti, C., Casazza, G., Stimac, T., Nikolova, D. & Gluud, C., 5 Jul 2019, In: Cochrane Database of Systematic Reviews. 7, p. CD012546 CD012546.

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

  • Intrahepatic Cholestasis of Pregnancy 100%
  • Bile Acids and Salts 67%
  • Acids 49%
  • Cholic Acid 40%
  • Chenodeoxycholic Acid 40%
  10 Citations (Scopus)
• 2017

  Direct-acting antivirals for chronic hepatitis C

  Jakobsen, J. C., Nielsen, E. E., Feinberg, J., Katakam, K. K., Fobian, K., Hauser, G., Poropat, G., Djurisic, S., Weiss, K. H., Bjelakovic, M., Bjelakovic, G., Klingenberg, S. L., Gluud, C., Nikolova, D., Koretz, R. L. & Liu, J. P., 18 Sep 2017, In: Cochrane Database of Systematic Reviews. 9, p. CD012143

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

  • Chronic Hepatitis C 100%
  • Antiviral Agents 81%
  • Hepatitis C 23%
  • Genotype 21%
  • Hepacivirus 17%
  175 Citations (Scopus)

• Total serum bile acids or serum bile acid profile, or both, for the diagnosis of intrahepatic cholestasis of pregnancy (Protocol)

  Manzotti, C., Casazza, G., Stimac, T., Nikolova, D. K. & Gluud, C., 2017, In: Cochrane Database of Systematic Reviews. p. CD012546

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2016

  Clevudine in people with chronic hepatitis B virus infection (Protocol)

  Ricaforte-Campos, J. D., Benjamin, CLM., Nikolova, D. K. & Gluud, C., 2016, In: Cochrane Database of Systematic Reviews. 10, p. CD012411

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

• Direct-acting antivirals for chronic hepatitis C (Protocol)

  Jakobsen, J. C., Nielsen, E. E., Feinberg, J., Fobian, K., Katakam, K. K., Hauser, G., Poropat, G., Djurisic, S., Weiss, K. H., Bjelakovic, M., Bjelakovic, G., Klingenberg, S. L., Liu, J. P., Nikolova, D. K., Koretz, R. & Gluud, C., 2016, In: Cochrane Database of Systematic Reviews. p. CD012143

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

• FibroTest, transient elastography method, and combined FibroTest and transient elastography method for diagnosis of severe hepatic fibrosis and cirrhosis in adults with chronic hepatitis C (Protocol)

  Pavlov, C. S., Casazza, G., Nikolova, D. K., Tsochatzis, E. A., Ivashkin, V. T. & Gluud, C., 2016, In: Cochrane Database of Systematic Reviews. 7, p. CD012291

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

• Glucocorticosteroids for people with alcoholic hepatitis (Protocol)

  Pavlov, C. S., Tsochatzis, E. A., Casazza, G., Nikolova, D. K., Volcek, E. & Gluud, C., 2016, In: Cochrane Database of Systematic Reviews. 6, p. CD001511

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

• Systematic review with meta-analysis: diagnostic accuracy of transient elastography for staging of fibrosis in people with alcoholic liver disease

  Pavlov, C. S., Casazza, G., Nikolova, D., Tsochatzis, E. & Gluud, C., Mar 2016, In: Alimentary Pharmacology and Therapeutics. 43, 5, p. 575-85 11 p.

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

  • Alcoholic Liver Diseases 100%
  • Elasticity Imaging Techniques 96%
  • Meta-Analysis 59%
  • Fibrosis 59%
  • Systematic Reviews 58%
  52 Citations (Scopus)

• Ultrasonography for diagnosis of alcoholic cirrhosis in people with alcoholic liver disease

  Pavlov, C. S., Casazza, G., Semenistaia, M., Nikolova, D., Tsochatzis, E., Liusina, E., Ivashkin, V. T. & Gluud, C., 2 Mar 2016, In: Cochrane Database of Systematic Reviews. 3, p. CD011602

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

  • Alcoholic Liver Cirrhosis 100%
  • Alcoholic Liver Diseases 96%
  • Ultrasonography 59%
  • Liver 39%
  • Fibrosis 37%
  9 Citations (Scopus)
• 2015

  S-adenosyl-L-methionine for people with alcoholic liver disease (Protocol)

  Pavlov, C. S., Casazza, G., Nikolova, D. K., Tikhonov, I. & Gluud, C., 2015, In: Cochrane Database of Systematic Reviews. 11, p. CD011949

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

• Transient elastography for diagnosis of stages of hepatic fibrosis and cirrhosis in people with alcoholic liver disease

  Pavlov, C. S., Casazza, G., Nikolova, D., Tsochatzis, E., Burroughs, A. K., Ivashkin, V. T. & Gluud, C., 22 Jan 2015, In: Cochrane Database of Systematic Reviews. 1, p. CD010542

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

  • Alcoholic Liver Diseases 100%
  • Elasticity Imaging Techniques 96%
  • Liver Cirrhosis 73%
  • Fibrosis 59%
  • Liver 41%
  44 Citations (Scopus)

• Ultrasonography for diagnosis of cirrhosis in people with alcoholic liver disease (Protocol)

  Pavlov, C. S., Casazza, G., Pavlova, M., Nikolova, D. K., Tsochatzis, E. A., Liusina, E. & Gluud, C., 2015, In: Cochrane Database of Systematic Reviews. 3, p. CD011602

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

• Vitamin D supplementation for chronic liver diseases in adults (Protocol)

  Bjelakovic, G., Nikolova, D. K., Bjelakovic, M. & Gluud, C., 2015, In: Cochrane Database of Systematic Reviews. 3, p. CD011564

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2014

  Antioxidant supplements and mortality

  Bjelakovic, G., Nikolova, D. & Gluud, C., 2014, In: Current Opinion in Clinical Nutrition and Metabolic Care. 17, 1, p. 40-44

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

  • Income 100%
  • Antioxidants 90%
  • Mortality 61%
  • Cause of Death 48%
  • Chronic Disease 44%
  183 Citations (Scopus)

• The architecture of diagnostic research: From bench to bedside - clinical guidelines using liver stiffness as an example

  Colli, A., Fraquelli, M., Casazza, G., Conte, D., Nikolova, D., Duca, P., Thorlund, K. & Gluud, C., 2014, In: Hepatology. 60, 1, p. 408-418

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

  • Guidelines 100%
  • Liver 80%
  • Routine Diagnostic Tests 73%
  • Elasticity Imaging Techniques 47%
  • Gastroenterology 43%
  54 Citations (Scopus)

• Vitamin D supplementation for prevention of cancer in adults

  Bjelakovic, G., Gluud, L. L., Nikolova, D., Whitfield, K. E., Krstic, G., Wetterslev, J. & Gluud, C., 2014, In: Cochrane Database of Systematic Reviews. 6, p. CD007469

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

  • Vitamin D 100%
  • Neoplasms 34%
  • Odds Ratio 14%
  • Calcium 12%
  • Confidence Intervals 11%
  124 Citations (Scopus)

• Vitamin D supplementation for prevention of mortality in adults

  Bjelakovic, G., Gluud, L. L., Nikolova, D., Whitfield, K. E., Wetterslev, J., Simonetti, R. G., Bjelakovic, M. & Gluud, C., 2014, In: Cochrane Database of Systematic Reviews. 1, p. CD007470

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

  • Vitamin D 100%
  • Mortality 54%
  • Systematic Reviews 52%
  • Cholecalciferol 41%
  • Elderly 24%
  221 Citations (Scopus)
• 2013

  Antioxidant supplements to prevent mortality

  Bjelakovic, G., Nikolova, D. & Gluud, C., 18 Sep 2013, In: J A M A: The Journal of the American Medical Association. 310, 11, p. 1178-9 2 p.

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

  • Antioxidants 100%
  • Mortality 67%
  90 Citations (Scopus)

• Meta-regression analyses, meta-analyses, and trial sequential analyses of the effects of supplementation with Beta-carotene, vitamin a, and vitamin e singly or in different combinations on all-cause mortality: do we have evidence for lack of harm?

  Bjelakovic, G., Nikolova, D. & Gluud, C., 2013, In: P L o S One. 8, 9, p. e74558

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

  • beta Carotene 100%
  • Vitamins 81%
  • vitamin E drug combination vitamin A 66%
  • Meta-Analysis 61%
  • Regression Analysis 53%
  123 Citations (Scopus)

• The Cochrane Hepato-Biliary Group as a resource example of evidence-based medicine for all

  Nikolova, D., Klingenberg, S. L. & Gluud, C., 2013, In: Acta Medica Portuguesa. 26, 2, p. 81-2 2 p.

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

  2 Citations (Scopus)
• 2012

  Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases

  Bjelakovic, G., Nikolova, D., Gluud, L. L., Simonetti, R. G. & Gluud, C., 2012, In: Cochrane Database of Systematic Reviews. 3, p. CD007176

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

  • Antioxidants 100%
  • Healthy Volunteers 89%
  • Mortality 67%
  • Confidence Intervals 44%
  • Meta-Analysis 33%
  478 Citations (Scopus)
• 2011

  Antioxidant supplements for liver diseases

  Bjelakovic, G., Gluud, L. L., Nikolova, D., Bjelakovic, M., Nagorni, A. & Gluud, C., 2011, In: Cochrane Database of Systematic Reviews. 3, p. CD007749

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

  • Liver Diseases 100%
  • Antioxidants 88%
  • Oxidative Stress 43%
  • Therapeutics 9%
  44 Citations (Scopus)

• Design of surgical randomized controlled trials involving multiple interventions

  Gurusamy, K. S., Gluud, C., Nikolova, D. & Davidson, B. R., 2011, In: Journal of Surgical Research. 165, 1, p. 118-27 10 p.

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

  • Randomized Controlled Trials 100%
  6 Citations (Scopus)

• Hepato-biliary clinical trials and their inclusion in the Cochrane Hepato-Biliary Group register and reviews

  Klingenberg, S. L., Nikolova, D., Alexakis, N., Als-Nielsen, B., Colli, A., Conte, D., D'Amico, G., Davidson, B., Fingerhut, A., Fraquelli, M., Gluud, L. L., Gurusamy, K., Keus, F., Khan, S., Koretz, R., van Laarhoven, C., Liu, J., Myers, R., Pagliaro, L., Simonetti, R., & 3 othersSutton, R., Thorlund, K. & Gluud, C., 2011, In: Journal of Gastroenterology and Hepatology. 26, 4, p. 649-56 8 p.

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

  • Systematic Reviews 100%
  • Clinical Trials 88%
  • Controlled Clinical Trials 73%
  • Focus Groups 65%
  • Meta-Analysis 50%
  3 Citations (Scopus)

• Vitamin D supplementation for prevention of mortality in adults

  Bjelakovic, G., Gluud, L. L., Nikolova, D., Whitfield, K., Wetterslev, J., Simonetti, R. G., Bjelakovic, M. & Gluud, C., 2011, In: Cochrane Database of Systematic Reviews. 7, p. CD007470

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

  • Vitamin D 100%
  • Mortality 54%
  163 Citations (Scopus)
• 2010

  Meta-analysis: antioxidant supplements for liver diseases - the Cochrane Hepato-Biliary Group

  Bjelakovic, G., Gluud, L. L., Nikolova, D., Bjelakovic, M., Nagorni, A. & Gluud, C., 1 Aug 2010, In: Alimentary Pharmacology and Therapeutics. 32, 3, p. 356-67 12 p.

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

  • Liver Diseases 100%
  • Meta-Analysis 88%
  • Antioxidants 88%
  • Oxidative Stress 43%
  • Therapeutics 9%
  52 Citations (Scopus)
• 2009

  Assessment of risk of bias in randomized clinical trials in surgery

  Gurusamy, K. S., Gluud, C., Nikolova, D. & Davidson, B. R., Apr 2009, In: British Journal of Surgery. 96, 4, p. 342-9 8 p.

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

  • Risk Assessment 100%
  • Randomized Controlled Trials 80%
  • Meta-Analysis 44%
  143 Citations (Scopus)

• Immunoglobulins for preventing hepatitis A

  Liu, J. P., Nikolova, D. & Fei, Y., 2009, In: Cochrane Database of Systematic Reviews. 2, p. CD004181

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

  • Hepatitis A 100%
  • Immunoglobulins 71%
  • Passive Immunization 49%
  • Epidemics 34%
  24 Citations (Scopus)
• 2008

  Antioxidant supplements for preventing gastrointestinal cancers

  Bjelakovic, G., Nikolova, D., Simonetti, R. G. & Gluud, C., 2008, In: Cochrane Database of Systematic Reviews. 3, p. CD004183

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

  • Gastrointestinal Neoplasms 100%
  • Antioxidants 62%
  • Oxidative Stress 30%
  207 Citations (Scopus)

• Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases

  Bjelakovic, G., Nikolova, D., Gluud, L. L., Simonetti, R. G. & Gluud, C., 2008, In: Cochrane Database of Systematic Reviews. 2, p. CD007176

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

  • Observational Studies 100%
  • Antioxidants 95%
  • Healthy Volunteers 85%
  • Survival 71%
  • Mortality 64%
  406 Citations (Scopus)

• Evidence-based clinical practice and The Cochrane Hepato-Biliary Group

  Gluud, C. & Nikolova, D. K., 2008, In: Acta Facultatis Medicae Naissensis. 25, 3, p. 145-9

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

• Systematic review: primary and secondary prevention of gastrointestinal cancers with antioxidant supplements

  Bjelakovic, G., Nikolova, D., Simonetti, R. G. & Gluud, C., 15 Sep 2008, In: Alimentary Pharmacology and Therapeutics. 28, 6, p. 689-703 15 p.

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

  • Gastrointestinal Neoplasms 100%
  • Primary Prevention 86%
  • Secondary Prevention 81%
  • Antioxidants 62%
  • Systematic Reviews 61%
  87 Citations (Scopus)
• 2007

  Banding ligation versus beta-blockers as primary prophylaxis in esophageal varices: systematic review of randomized trials

  Gluud, L. L., Klingenberg, S., Nikolova, D. & Gluud, C., Dec 2007, In: American Journal of Gastroenterology. 102, 12, p. 2842-8; quiz 2841, 2849

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

  • Esophageal and Gastric Varices 100%
  • Ligation 73%
  • Systematic Reviews 61%
  • Hemorrhage 53%
  102 Citations (Scopus)

• Likely country of origin in publications on randomised controlled trials and controlled clinical trials during the last 60 years

  Gluud, C. & Nikolova, D., 2007, In: Trials. 8, p. 7

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

  • Controlled Clinical Trials 100%
  • Publications 76%
  • Randomized Controlled Trials 61%
  • Clinical Trials 59%
  27 Citations (Scopus)

• Mortality in randomized trials of antioxidant supplements for primary and secondary prevention: systematic review and meta-analysis

  Bjelakovic, G., Nikolova, D., Gluud, L. L., Simonetti, R. G. & Gluud, C., 28 Feb 2007, In: J A M A: The Journal of the American Medical Association. 297, 8, p. 842-57 16 p.

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

  • Primary Prevention 100%
  • Secondary Prevention 94%
  • Meta-Analysis 72%
  • Antioxidants 71%
  • Systematic Reviews 71%
  1905 Citations (Scopus)
• 2006

  Meta-analysis: antioxidant supplements for primary and secondary prevention of colorectal adenoma

  Bjelakovic, G., Nagorni, A., Nikolova, D., Simonetti, R. G., Bjelakovic, M. & Gluud, C., 15 Jul 2006, In: Alimentary Pharmacology and Therapeutics. 24, 2, p. 281-91 11 p.

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

  • Adenomatous Polyps 100%
  • Primary Prevention 76%
  • Secondary Prevention 72%
  • Adenoma 69%
  • Colorectal Neoplasms 59%
  85 Citations (Scopus)
• 2004

  Antioxidant supplements for preventing gastrointestinal cancers

  Bjelakovic, G., Nikolova, D., Simonetti, R. G. & Gluud, C., 2004, In: Cochrane Database of Systematic Reviews. 4, p. CD004183

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

  • Gastrointestinal Neoplasms 100%
  • Antioxidants 62%
  • Oxidative Stress 30%

• Antioxidant supplements for prevention of gastrointestinal cancers: a systematic review and meta-analysis

  Bjelakovic, G., Nikolova, D., Simonetti, R. G. & Gluud, C., 2004, In: Lancet. 364, 9441, p. 1219-28 10 p.

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

  • Gastrointestinal Neoplasms 100%
  • Meta-Analysis 62%
  • Antioxidants 62%
  • Systematic Reviews 61%
  • Oxidative Stress 61%
  548 Citations (Scopus)
• 2003

  Antioxidant supplements for preventing gastrointestinal cancers. Protocol for a Cochrane Review

  Bjelakovic, G., Nikolova, D. & Simonetti, R. G., 2003, In: Cochrane Database of Systematic Reviews. 2

  Research output: Contribution to journal › Journal article › Research › peer-review
• 1999

  Randomized clinical trials in HEPATOLOGY: predictors of quality

  Kjaergard, L. L., Nikolova, D. & Gluud, C., Nov 1999, In: Hepatology. 30, 5, p. 1134-8 5 p.

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

  • Randomized Controlled Trials 100%
  • Odds Ratio 95%
  • Drug Industry 42%
  • Portal Hypertension 40%
  • Industry 34%
  95 Citations (Scopus)
• 1998

  Quality assessment of reports on clinical trials in the Journal of Hepatology

  Gluud, C. & Nikolova, D., Aug 1998, In: Journal of Hepatology. 29, 2, p. 321-7 7 p.

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

  • Gastroenterology 100%
  • Randomized Controlled Trials 60%
  • Clinical Trials 57%
  • Controlled Clinical Trials 48%
  • Databases 26%
  44 Citations (Scopus)