Asbjørn Hróbjartsson

Asbjørn Hróbjartsson's AcademicInfluence.com Rankings

Philosophy

#3567

World Rank

#5733

Historical Rank

Logic

#2471

World Rank

#3469

Historical Rank

philosophy Degrees

Download Badge

Philosophy

Asbjørn Hróbjartsson's Degrees

Bachelors Medicine University of Copenhagen
PhD Medical Science University of Copenhagen

Why Is Asbjørn Hróbjartsson Influential?

(Suggest an Edit or Addition)

According to Wikipedia, Asbjørn Hróbjartsson is a Danish medical researcher. He is Professor of Evidence-Based Medicine and Clinical Research Methodology at the University of Southern Denmark, as well as head of research at Odense University Hospital's Center for Evidence-Based Medicine. He is the former editor-in-chief of the Danish journal Bibliotek for Læger. He is also affiliated with the Nordic Cochrane Centre in Copenhagen. He received his Ph.D. in June 2001 from the University of Copenhagen, with a thesis entitled Are placebo interventions associated with clinically important effects? He is best-known for a 2001 article he co-authored with Peter C. Gotzsche on the placebo effect. The article reviewed 114 studies comparing placebo treatment to no treatment, and concluded that placebos did not have clinically important effects for any condition, with the exception of self-reported pain and other continuous subjective outcomes. He has also co-authored a subsequent paper on placebo effect research with Ted Kaptchuk and Franklin G. Miller.

(See a Problem?)

Asbjørn Hróbjartsson's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

The PRISMA 2020 statement: an updated guideline for reporting systematic reviews (2021) (17108)
RoB 2: a revised tool for assessing risk of bias in randomised trials (2019) (7746)
ROBINS-I: a tool for assessing risk of bias in non-randomised studies of interventions (2016) (7256)
SPIRIT 2013 statement: defining standard protocol items for clinical trials. (2013) (3679)
SPIRIT 2013 explanation and elaboration: guidance for protocols of clinical trials (2013) (3035)
PRISMA 2020 explanation and elaboration: updated guidance and exemplars for reporting systematic reviews (2020) (2160)
Empirical evidence for selective reporting of outcomes in randomized trials: comparison of protocols to published articles. (2004) (1706)
Guidelines for Reporting Reliability and Agreement Studies (GRRAS) were proposed. (2011) (1615)
Is the placebo powerless? An analysis of clinical trials comparing placebo with no treatment. (2001) (1468)
The PRISMA 2020 statement: an updated guideline for reporting systematic reviews (2021) (1336)
A revised tool for assessing risk of bias in randomized trials (2016) (1230)
The PRISMA 2020 statement: An updated guideline for reporting systematic reviews. (2021) (788)
SPIRIT 2013 Statement: defining standard protocol items for clinical trials. (2015) (688)
The PRISMA 2020 statement: An updated guideline for reporting systematic reviews (2021) (617)
The PRISMA 2020 statement: An updated guideline for reporting systematic reviews. (2020) (562)
Placebo interventions for all clinical conditions. (2004) (520)
Impact of allocation concealment on conclusions drawn from meta-analyses of randomized trials. (2007) (442)
Spontaneous improvement in randomised clinical trials: meta-analysis of three-armed trials comparing no treatment, placebo and active intervention (2009) (376)
Acupuncture treatment for pain: systematic review of randomised clinical trials with acupuncture, placebo acupuncture, and no acupuncture groups (2009) (373)
Is the placebo powerless? Update of a systematic review with 52 new randomized trials comparing placebo with no treatment (2004) (356)
Observer bias in randomized clinical trials with measurement scale outcomes: a systematic review of trials with both blinded and nonblinded assessors (2013) (350)
Observer bias in randomised clinical trials with binary outcomes: systematic review of trials with both blinded and non-blinded outcome assessors (2012) (325)
Guidelines for Reporting Reliability and Agreement Studies (GRRAS) were proposed. (2011) (294)
Bias due to lack of patient blinding in clinical trials. A systematic review of trials randomizing patients to blind and nonblind sub-studies. (2014) (289)
Reporting Methods of Blinding in Randomized Trials Assessing Nonpharmacological Treatments (2007) (286)
Ghost Authorship in Industry-Initiated Randomised Trials (2007) (254)
Hepatology and Nutrition Guidelines for Diagnosing Coeliac Disease 2020 (2020) (224)
Pain relief that matters to patients: systematic review of empirical studies assessing the minimum clinically important difference in acute pain (2017) (222)
Differential effectiveness of placebo treatments: a systematic review of migraine prophylaxis. (2013) (221)
European Society Paediatric Gastroenterology, Hepatology and Nutrition Guidelines for Diagnosing Coeliac Disease 2019. (2019) (217)
Placebo interventions for all clinical conditions. (2010) (209)
Biomarkers as point-of-care tests to guide prescription of antibiotics in patients with acute respiratory infections in primary care. (2014) (206)
Data extraction errors in meta-analyses that use standardized mean differences. (2007) (191)
Evaluation of the Cochrane tool for assessing risk of bias in randomized clinical trials: overview of published comments and analysis of user practice in Cochrane and non-Cochrane reviews (2016) (178)
Empirical Evidence of Study Design Biases in Randomized Trials: Systematic Review of Meta-Epidemiological Studies (2016) (178)
Discrepancies in sample size calculations and data analyses reported in randomised trials: comparison of publications with protocols (2008) (178)
Comparison of descriptions of allocation concealment in trial protocols and the published reports: cohort study (2005) (172)
Systematic review adherence to methodological or reporting quality (2017) (169)
What are the main methodological problems in the estimation of placebo effects? (2002) (167)
Considering bias and conflicts of interest among the included studies (2019) (167)
Blinded trials taken to the test: an analysis of randomized clinical trials that report tests for the success of blinding. (2007) (160)
Methods of Blinding in Reports of Randomized Controlled Trials Assessing Pharmacologic Treatments: A Systematic Review (2006) (142)
The Use of Placebo Interventions in Medical Practice—A National Questionnaire Survey of Danish Clinicians (2003) (140)
Placebo effect studies are susceptible to response bias and to other types of biases. (2011) (138)
Who is blinded in randomized clinical trials? A study of 200 trials and a survey of authors (2006) (130)
Impact of blinding on estimated treatment effects in randomised clinical trials: meta-epidemiological study (2020) (127)
Conflicts of Interest at Medical Journals: The Influence of Industry-Supported Randomised Trials on Journal Impact Factors and Revenue – Cohort Study (2010) (121)
Minimum clinically important differences in chronic pain vary considerably by baseline pain and methodological factors: systematic review of empirical studies. (2018) (113)
Interleukin-6 blocking agents for treating COVID-19: a living systematic review. (2021) (109)
Guidelines for Reporting Trial Protocols and Completed Trials Modified Due to the COVID-19 Pandemic and Other Extenuating Circumstances: The CONSERVE 2021 Statement. (2021) (100)
Observer bias in randomized clinical trials with time-to-event outcomes: systematic review of trials with both blinded and non-blinded outcome assessors. (2014) (99)
A new classification of spin in systematic reviews and meta-analyses was developed and ranked according to the severity. (2016) (90)
Constraints on publication rights in industry-initiated clinical trials. (2006) (85)
Somatostatin analogues for acute bleeding oesophageal varices. (2008) (85)
Fertility after uterine artery embolization of fibroids: a systematic review (2017) (75)
Benefits and harms of locking plate osteosynthesis in intraarticular (OTA Type C) fractures of the proximal humerus: a systematic review. (2012) (68)
Benefits and harms in clinical trials of duloxetine for treatment of major depressive disorder: comparison of clinical study reports, trial registries, and publications (2014) (63)
The controlled clinical trial turns 100 years: Fibiger's trial of serum treatment of diphtheria (1998) (62)
Disagreements in meta-analyses using outcomes measured on continuous or rating scales: observer agreement study (2009) (61)
Blinding in Randomized Clinical Trials: Imposed Impartiality (2011) (60)
Lack of blinding of outcome assessors in animal model experiments implies risk of observer bias. (2014) (60)
Improved interobserver variation after training of doctors in the Neer system. A randomised trial. (2002) (59)
The uncontrollable placebo effect (1996) (52)
The evolution of assessing bias in Cochrane systematic reviews of interventions: celebrating methodological contributions of the Cochrane Collaboration (2013) (52)
Reporting on blinding in trial protocols and corresponding publications was often inadequate but rarely contradictory. (2009) (50)
The COVID-NMA Project: Building an Evidence Ecosystem for the COVID-19 Pandemic (2020) (49)
Unsubstantiated claims of large effects of placebo on pain: serious errors in meta-analysis of placebo analgesia mechanism studies. (2006) (48)
Training improves agreement among doctors using the Neer system for proximal humeral fractures in a systematic review. (2008) (46)
Placebo treatment versus no treatment. (2002) (46)
Comparison of central adjudication of outcomes and onsite outcome assessment on treatment effect estimates. (2016) (44)
Identifying approaches for assessing methodological and reporting quality of systematic reviews: a descriptive study (2017) (43)
Reverse shoulder arthroplasty in acute fractures of the proximal humerus: A systematic review (2013) (41)
The Osteoporosis Self-Assessment Tool versus alternative tests for selecting postmenopausal women for bone mineral density assessment: a comparative systematic review of accuracy (2009) (39)
Assessing risk of bias in randomised clinical trials included in Cochrane Reviews: the why is easy, the how is a challenge. (2013) (39)
Financial conflicts of interest in systematic reviews: associations with results, conclusions, and methodological quality. (2019) (36)
Subjective and objective outcomes in randomized clinical trials: definitions differed in methods publications and were often absent from trial reports. (2014) (36)
Interleukin-1 blocking agents for treating COVID-19. (2022) (35)
The risk of unblinding was infrequently and incompletely reported in 300 randomized clinical trial publications. (2014) (34)
Active placebo control groups of pharmacological interventions were rarely used but merited serious consideration: a methodological overview. (2017) (33)
Promoting public access to clinical trial protocols: challenges and recommendations (2018) (33)
Surgeons agree more on treatment recommendations than on classification of proximal humeral fractures (2012) (32)
Association between conflicts of interest and favourable recommendations in clinical guidelines, advisory committee reports, opinion pieces, and narrative reviews: systematic review (2020) (32)
Powerful spin in the conclusion of Wampold et al.'s re-analysis of placebo versus no-treatment trials despite similar results as in original review. (2007) (31)
Low agreement among 24 doctors using the Neer-classification; only moderate agreement on displacement, even between specialists (2002) (30)
Effect of osteosynthesis, primary hemiarthroplasty, and non-surgical management for displaced four-part fractures of the proximal humerus in elderly: a multi-centre, randomised clinical trial (2009) (29)
Performance of the Osteoporosis Self-Assessment Tool in ruling out low bone mineral density in postmenopausal women: a systematic review (2007) (29)
Diagnosing displaced four-part fractures of the proximal humerus: a review of observer studies (2009) (28)
Randomized clinical trials with run-in periods: frequency, characteristics and reporting (2019) (27)
Clinical Placebo Interventions Are Unethical, Unnecessary, and Unprofessional (2008) (27)
Interventions for the prevention and treatment of COVID-19: a living mapping of research and living network meta-analysis (2020) (27)
Locking plate osteosynthesis in displaced 4-part fractures of the proximal humerus (2011) (26)
Efficacy and safety of COVID‐19 vaccines (2022) (26)
Somatostatin analogues for acute bleeding oesophageal varices. (2005) (25)
A systematic review found no consistent difference in effect between more and less intensive placebo interventions. (2015) (24)
Unreported formal assessment of unblinding occurred in 4 of 10 randomized clinical trials, unreported loss of blinding in 1 of 10 trials. (2017) (21)
Effect of teaching and type of stethoscope on cardiac auscultatory performance. (2006) (20)
Unreliable analysis of placebo analgesia in trials of placebo pain mechanisms (2003) (18)
Research response to coronavirus disease 2019 needed better coordination and collaboration: a living mapping of registered trials (2020) (18)
The matching quality of experimental and control interventions in blinded pharmacological randomised clinical trials: a methodological systematic review (2016) (18)
A randomized trial comparing electronic and conventional stethoscopes. (2005) (17)
Antibiotics for secondary prevention of coronary heart disease (2017) (16)
Mechanisms and direction of allocation bias in randomised clinical trials (2016) (15)
Performance of the Osteoporosis Self-Assessment Tool in ruling out low bone mineral density in postmenopausal women: a systematic review (2007) (15)
Interventions for preventing and treating COVID-19: protocol for a living mapping of research and a living systematic review (2020) (15)
Conflicts of interest in clinical guidelines, advisory committee reports, opinion pieces, and narrative reviews: associations with recommendations. (2020) (13)
Ten questions to consider when interpreting results of a meta‐epidemiological study—the MetaBLIND study as a case (2019) (13)
[Constraints on publication rights in industry-initiated clinical trials--secondary publication]. (2006) (13)
Divine intervention? A Cochrane review on intercessory prayer gone beyond science and reason (2009) (11)
High-dose interleukin-2 and interferon as first-line immunotherapy for metastatic melanoma: long-term follow-up in a large unselected Danish patient cohort. (2019) (11)
Coding of adverse events of suicidality in clinical study reports of duloxetine for the treatment of major depressive disorder: descriptive study (2014) (11)
Assessing risk of bias in studies that evaluate health care interventions: recommendations in the misinformation age. (2018) (11)
Resurfacing hemiarthroplasty compared to stemmed hemiarthroplasty for glenohumeral osteoarthritis: a randomised clinical trial (2015) (11)
Influence and management of conflicts of interest in randomised clinical trials: qualitative interview study (2020) (10)
Financial conflicts of interest in clinical research (2018) (10)
Should doctors recommend acupuncture for pain? (2018) (9)
Conflicts of interest and recommendations in clinical guidelines, opinion pieces, and narrative reviews (2019) (9)
Non-surgical interventions for excessive anterior pelvic tilt in symptomatic and non-symptomatic adults: a systematic review (2020) (9)
What to do with a clinical trial with conflicts of interest (2019) (9)
Minimal clinically important differences in chronic pain (2012) (8)
Postponement of Death by Statin Use: a Systematic Review and Meta-analysis of Randomized Clinical Trials (2019) (8)
Systematic review finds that appraisal tools for medical research studies address conflicts of interest superficially. (2019) (7)
Control interventions in randomised trials among people with mental health disorders. (2022) (7)
Why did it take 19 months to retrieve clinical trial data from a non-profit organisation? (2013) (6)
Prevalence and prognosis of acutely ill patients with organ failure at arrival to hospital: A systematic review (2018) (6)
Core belief in powerful effects of placebo interventions is in conflict with no evidence of important effects in a large systematic review (2001) (6)
Active placebo versus standard placebo control interventions in pharmacological randomised trials (2019) (5)
Interventions for the treatment of COVID-19: a living network meta-analysis (2020) (5)
Rheumatoid arthritis: the goal rather than the health-care provider is key (2006) (5)
An update to SPIRIT and CONSORT reporting guidelines to enhance transparency in randomized trials (2022) (5)
Prevalence and prognosis of acutely ill patients with organ failure at arrival to hospital: protocol for a systematic review (2017) (4)
Conflict of Interest Policies at Medical Schools and Teaching Hospitals: A Systematic Review of Cross-sectional Studies (2021) (4)
Placebo, usual care and wait-list interventions for all mental health disorders (2019) (4)
Financial conflicts of interest and outcomes and quality of systematic reviews (2017) (4)
Wampold et al.'s reiterate spin in the conclusion of a re‐analysis of placebo versus no‐treatment trials despite similar results as in original review (2007) (4)
Postponement of Death by Pharmacological Heart Failure Treatment: A Meta-Analysis of Randomized Clinical Trials. (2020) (3)
Treatment effect sizes vary in randomized trials depending on type of outcome measure. (2020) (3)
The Influence of Industry Funding and Other Financial Conflicts of Interest on the Outcomes and Quality of Systematic Reviews (2017) (3)
Interventions for preventing and treating COVID-19: living systematic reviews and network meta-analyses (2020) (3)
[Selective reporting of positive outcomes in randomised trials--secondary publication.. A comparison of protocols with published reports]. (2005) (3)
Adherence to the PRISMA-P 2015 reporting guideline was inadequate in systematic review protocols. (2022) (2)
[What is the effect of placebo interventions? A systematic review of randomized clinical trials with placebo treated and untreated patients]. (2002) (2)
Controversy and Debate on Meta-epidemiology. Paper 1: Treatment effect sizes vary in randomized trials depending on the type of outcome measure (2020) (2)
Income from reprints creates a conflict of interests (2012) (2)
Correction: Conflicts of Interest at Medical Journals: The Influence of Industry-Supported Randomised Trials on Journal Impact Factors and Revenue – Cohort Study (2011) (2)
Placebo in Nonpharmacological Randomized Trials (2011) (1)
Combining meta‐epidemiological study datasets on commercial funding of randomised clinical trials: Database, methods, and descriptive results of the COMFIT study (2021) (1)
Using Risk of Bias 2 to assess results from randomised controlled trials: guidance from Cochrane (2023) (1)
Differential Effectiveness of Placebo Treatments (2014) (1)
Long-term Changes in Observed Behaviour after Exposure to Psychiatric Drugs A Systematic Review of Animal Studies (2017) (1)
[A new scientific source of bias: SILLY bias. Analysis of citations of BMJ's Christmas articles]. (2009) (1)
Response to Meissner: our preference of patient‐reported to observer‐reported outcomes has trivial influence on our updated systematic review of the effect of placebo (2005) (1)
Blinding in Biomedical Research: An Essential Method to Reduce Risk of Bias (2016) (1)
Modelling of Outcome Postponement for Cardiovascular Outcomes in Statin Trials (2017) (0)
Re: "A note on unmasking" (Letter commenting on: J Clin Epidemiol. 2014;67:1059-69). (2016) (0)
Our findings on acupuncture are robust (2017) (0)
Observer bias in randomised clinical trial with measurement scale outcomes. An analysis of trials with both blind and nonblind outcome assessors. Cochrane Database Syst Rev 2011;133(Suppl 3) (2011) (0)
Follow-up Commentary (2006) (0)
Danish University Colleges Nonsurgical interventions of excessive anterior pelvic tilt in symptomatic and non- symptomatic adults: a systematic review (2020) (0)
Agreement was moderate between data-based and opinion-based assessments of biases affecting randomized trials within meta-analyses (2020) (0)
A meta-epidemiological study found that meta-analyses of the same trials may obtain drastically conflicting results. (2023) (0)
Acupuncture for pain: our result is robust to trial selection, and our threshold for minimal clinically effect is low (2017) (0)
Letter re: stratification of meta-analyses based on risk of bias is appropriate and does not induce selection bias. (2019) (0)
Syddansk Universitet Evaluation of the Cochrane tool for assessing risk of bias in randomized clinical trials overview of published comments and analysis of user practice in Cochrane and non-Cochrane (2016) (0)
A scoping review identifies multiple comments suggesting modifications to SPIRIT 2013 and CONSORT 2010. (2023) (0)
RCTs and non-RCT studies on preventive measures and treatments for Covid-19 (2020) (0)
ABSTRACTS 1st AUGUST CONFERENCE AARHUS UNIVERSITY GROUP FOR UNDERSTANDING SYSTEMATIC REVIEWS AND METAANALYSES IN TRANSLATIONAL PRECLINICAL SCIENCE November 17th 2015 Aarhus, Denmark (2016) (0)
List of studies on Covid-19 identified in PubMed and excluded from our systematic review (2020) (0)
Response to Soares et al. (2019) (0)
Impact of active placebo controls on estimated drug effects in randomised trials: a systematic review of trials with both active placebo and standard placebo. (2023) (0)
Commercial funding and estimated intervention effects in randomized clinical trials: Systematic review of meta‐epidemiological studies (2022) (0)
Are there any differences between acupuncture and placebo acupuncture in the treatment of pain (2009) (0)
A scoping review finds that guides to authors of protocols for observational epidemiological studies varied highly in format and content. (2022) (0)
Observational studies on preventive measures and treatments for Covid-19 (2020) (0)
Syddansk Universitet Prevalence and prognosis of acutely ill patients with organ failure at arrival to hospital protocol for a systematic review (2017) (0)
Re: "Zinc lozenges and vitamin C for the common cold are not examples of placebo effect in action". (2015) (0)
Modelling studies on preventive measures and treatments for Covid-19 (2020) (0)
The methodological quality was low and conclusions discordant for meta-analyses comparing proximal humerus fracture treatments: a meta-epidemiological study. (2021) (0)
Syddansk Universitet The matching quality of experimental and control interventions in blinded pharmacological randomised clinical trials (2016) (0)
Antibiotics for secondary prevention of coronary heart disease. (2021) (0)
acupuncture groups acupuncture, placebo acupuncture, and no review of randomised clinical trials with Acupuncture treatment for pain: systematic (2009) (0)
Stratification of meta-analyses based on risk of bias is appropriate and does not induce selection bias. Journal of Clinical Epidemiology. (2019) (0)
RCTs and quasi-experimental studies on preventive measures and treatments for Covid-19 (2020) (0)
Meta-epidemiology and the MetaBLIND study: Response to Tack. (2023) (0)
Minimal clinically important differences in acute pain. Cochrane Database Syst Rev 2011;113(Suppl 3) (2011) (0)
Modelling of endpoint postponement for all-cause mortality in statin trials (2015) (0)
Syddansk Universitet Promoting public access to clinical trial protocols Challenges and recommendations (2018) (0)
Research on complementary-alternative medicine: the importance and frailty of impartiality (2008) (0)
Authors' reply: The quality of the acupuncture interventions was considered in our systematic review (2017) (0)
Undocumented editorial on placebos (2018) (0)
Were patients with unfavorable outcomes deleted in a covert duplicate publication reporting effect of placebo on hypertension? (2006) (0)
BENEFITS AND HARMS OF LOCKING PLATE OSTEOSYNTHESIS IN DISPLACED FOUR-PART FRACTURES OF THE PROXIMAL HUMERUS: A SYSTEMATIC REVIEW (2012) (0)
Protocols for RCTs on preventive measures and treatments for Covid-19 (2020) (0)
Examples, mechanisms and management of conflicts of interest in randomized clinical trials: qualitative interview study (2019) (0)
adherence to methodological or reporting quality (2017) (0)
[A survey of medical end-of-life decisions in six different European countries]. (2001) (0)
Syddansk Universitet Mechanisms and direction of allocation bias in randomised clinical trials (2016) (0)
[The thesis about the powerless placebo]. (2004) (0)
[Placebo and the evidence burden]. (2002) (0)
Acupuncture and placebo acupuncture for pain (2017) (0)
[Johannes Fibiger and the controlled clinical trial]. (2007) (0)
Postponement of cardiovascular outcomes by statin use: A systematic review and meta‐analysis of randomized clinical trials (2020) (0)
from academia or the pharmaceutical and biomedical research industries, be fully acknowledged. (2017) (0)

This paper list is powered by the following services:

Other Resources About Asbjørn Hróbjartsson

What Schools Are Affiliated With Asbjørn Hróbjartsson?

Asbjørn Hróbjartsson is affiliated with the following schools:

Asbjørn Hróbjartsson's Academic­Influence.com Rankings