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https://www.readbyqxmd.com/read/28196819/outcome-reporting-bias-in-clinical-trials-why-monitoring-matters
#1
John Pa Ioannidis, Arthur L Caplan, Rafael Dal-Ré
No abstract text is available yet for this article.
February 14, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28192565/acknowledging-and-overcoming-nonreproducibility-in-basic-and-preclinical-research
#2
John P A Ioannidis
No abstract text is available yet for this article.
February 13, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28192563/evaluation-of-evidence-of-statistical-support-and-corroboration-of-subgroup-claims-in-randomized-clinical-trials
#3
Joshua D Wallach, Patrick G Sullivan, John F Trepanowski, Kristin L Sainani, Ewout W Steyerberg, John P A Ioannidis
Importance: Many published randomized clinical trials (RCTs) make claims for subgroup differences. Objective: To evaluate how often subgroup claims reported in the abstracts of RCTs are actually supported by statistical evidence (P < .05 from an interaction test) and corroborated by subsequent RCTs and meta-analyses. Data Sources: This meta-epidemiological survey examines data sets of trials with at least 1 subgroup claim, including Subgroup Analysis of Trials Is Rarely Easy (SATIRE) articles and Discontinuation of Randomized Trials (DISCO) articles...
February 13, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28190627/does-evidence-based-hearsay-determine-the-use-of-medical-treatments
#4
John P A Ioannidis
No abstract text is available yet for this article.
February 6, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28127782/finding-the-power-to-reduce-publication-bias
#5
T D Stanley, Hristos Doucouliagos, John P A Ioannidis
The central purpose of this study is to document how a sharper focus upon statistical power may reduce the impact of selective reporting bias in meta-analyses. We introduce the weighted average of the adequately powered (WAAP) as an alternative to the conventional random-effects (RE) estimator. When the results of some of the studies have been selected to be positive and statistically significant (i.e. selective reporting), our simulations show that WAAP will have smaller bias than RE at no loss to its other statistical properties...
January 27, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28114549/underperforming-big-ideas-in-biomedical-research-reply
#6
LETTER
Michael J Joyner, Nigel Paneth, John P A Ioannidis
No abstract text is available yet for this article.
17, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28077235/drivers-of-poor-medical-care
#7
REVIEW
Vikas Saini, Sandra Garcia-Armesto, David Klemperer, Valerie Paris, Adam G Elshaug, Shannon Brownlee, John P A Ioannidis, Elliott S Fisher
The global ubiquity of overuse and underuse of health-care resources and the gravity of resulting harms necessitate an investigation of drivers to inform potential solutions. We describe the network of influences that contribute to poor care and suggest that it is driven by factors that fall into three domains: money and finance; knowledge, bias, and uncertainty; and power and human relationships. In each domain the drivers operate at the global, national, regional, and individual level, and are modulated by the specific contexts within which they act...
January 6, 2017: Lancet
https://www.readbyqxmd.com/read/28027950/dietfits-study-diet-intervention-examining-the-factors-interacting-with-treatment-success-study-design-and-methods
#8
Michael V Stanton, Jennifer L Robinson, Susan M Kirkpatrick, Sarah Farzinkhou, Erin C Avery, Joseph Rigdon, Lisa C Offringa, John F Trepanowski, Michelle E Hauser, Jennifer C Hartle, Rise J Cherin, Abby C King, John P A Ioannidis, Manisha Desai, Christopher D Gardner
Numerous studies have attempted to identify successful dietary strategies for weight loss, and many have focused on Low-Fat vs. Low-Carbohydrate comparisons. Despite relatively small between-group differences in weight loss found in most previous studies, researchers have consistently observed relatively large between-subject differences in weight loss within any given diet group (e.g., ~25kg weight loss to ~5kg weight gain). The primary objective of this study was to identify predisposing individual factors at baseline that help explain differential weight loss achieved by individuals assigned to the same diet, particularly a pre-determined multi-locus genotype pattern and insulin resistance status...
February 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28004846/short-term-economic-impact-of-the-zika-virus-outbreak
#9
Daniele Macciocchi, Simone Lanini, Francesco Vairo, Alimuddin Zumla, Luiz Tadeu Moraes Figueiredo, Francesco Nicola Lauria, Gino Strada, Philippe Brouqui, Vincenzo Puro, Sanjeev Krishna, Peter Kremsner, Paola Scognamiglio, Carsten Köhler, Emanuele Nicastri, Antonino Di Caro, Rodolfo Maria Cieri, John P A Ioannidis, Gary Kobinger, Marcelo Nascimento Burattini, Giuseppe Ippolito
Zika virus (ZIKV) is mainly transmitted by mosquitoes bites. However, transmission by sexual contacts has been reported in 11 non endemic countries. The rapid spread of ZIKV in Latin American and Caribbean Countries (LCR), person-to-person transmission and perceived risk on people's well being can affect the emerging economies of LCR which historically dependent on truism. Here we present an analysis on economic outputs for assessing the current impact of ZIKV on markets. Our analysis show an unexpected resilience of LCR markets to international alerts...
October 2016: New Microbiologica
https://www.readbyqxmd.com/read/28004011/methods-to-enhance-the-reproducibility-of-precision-medicine
#10
Arjun K Manrai, Chirag J Patel, Nils Gehlenborg, Nicholas P Tatonetti, John P A Ioannidis, Isaac S Kohane
No abstract text is available yet for this article.
2016: Pacific Symposium on Biocomputing
https://www.readbyqxmd.com/read/27998906/biomedical-journals-and-preprint-services-friends-or-foes
#11
Thomas Annesley, Mitchell Scott, Hilda Bastian, Vivian Fonseca, John P A Ioannidis, Michael A Keller, Jessica Polka
No abstract text is available yet for this article.
December 20, 2016: Clinical Chemistry
https://www.readbyqxmd.com/read/27940837/enhancing-reproducibility-for-computational-methods
#12
Victoria Stodden, Marcia McNutt, David H Bailey, Ewa Deelman, Yolanda Gil, Brooks Hanson, Michael A Heroux, John P A Ioannidis, Michela Taufer
No abstract text is available yet for this article.
December 9, 2016: Science
https://www.readbyqxmd.com/read/27927232/publication-of-nuclear-magnetic-resonance-experimental-data-with-semantic-web-technology-and-the-application-thereof-to-biomedical-research-of-proteins
#13
Masashi Yokochi, Naohiro Kobayashi, Eldon L Ulrich, Akira R Kinjo, Takeshi Iwata, Yannis E Ioannidis, Miron Livny, John L Markley, Haruki Nakamura, Chojiro Kojima, Toshimichi Fujiwara
BACKGROUND: The nuclear magnetic resonance (NMR) spectroscopic data for biological macromolecules archived at the BioMagResBank (BMRB) provide a rich resource of biophysical information at atomic resolution. The NMR data archived in NMR-STAR ASCII format have been implemented in a relational database. However, it is still fairly difficult for users to retrieve data from the NMR-STAR files or the relational database in association with data from other biological databases. FINDINGS: To enhance the interoperability of the BMRB database, we present a full conversion of BMRB entries to two standard structured data formats, XML and RDF, as common open representations of the NMR-STAR data...
May 5, 2016: Journal of Biomedical Semantics
https://www.readbyqxmd.com/read/27896967/methods-to-ensure-the-reproducibility-of-biomedical-research
#14
Konrad J Karczewski, Nicholas P Tatonetti, Arjun K Manrai, Chirag J Patel, C Titus Brown, John P A Ioannidis
Science is not done in a vacuum - across fields of biomedicine, scientists have built on previous research and used data published in previous papers. A mainstay of scientific inquiry is the publication of one's research and recognition for this work is given in the form of citations and notoriety - ideally given in proportion to the quality of the work. Academic incentives, however, may encourage individual researchers to prioritize career ambitions over scientific truth. Recently, the New England Journal of Medicine published a commentary calling scientists who repurpose data "research parasites" who misuse data generated by others to demonstrate alternative hypotheses...
2016: Pacific Symposium on Biocomputing
https://www.readbyqxmd.com/read/27884869/sex-based-subgroup-differences-in-randomized-controlled-trials-empirical-evidence-from-cochrane-meta-analyses
#15
Joshua D Wallach, Patrick G Sullivan, John F Trepanowski, Ewout W Steyerberg, John P A Ioannidis
OBJECTIVE:  To evaluate the frequency, validity, and relevance of statistically significant (P<0.05) sex-treatment interactions in randomized controlled trials in Cochrane meta-analyses. DESIGN:  Meta-epidemiological study. DATA SOURCES:  Cochrane Database of Systematic Reviews (CDSR) and PubMed. ELIGIBILITY CRITERIA FOR STUDY SELECTION:  Reviews published in the CDSR with sex-treatment subgroup analyses in the forest plots, using data from randomized controlled trials...
November 24, 2016: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/27884175/network-meta-analyses-performed-by-contracting-companies-and-commissioned-by-industry
#16
Ewoud Schuit, John Pa Ioannidis
BACKGROUND: Industry commissions contracting companies to perform network meta-analysis for health technology assessment (HTA) and reimbursement submissions. Our objective was to estimate the number of network meta-analyses performed by consulting companies contracted by industry, to assess whether they were published, and to explore reasons for non-publication. METHODS: We searched MEDLINE for network meta-analyses of randomized trials. Papers were included if they had authors affiliated with any contracting company...
November 25, 2016: Systematic Reviews
https://www.readbyqxmd.com/read/27842706/insomnia-from-drug-treatments-evidence-from-meta-analyses-of-randomized-trials-and-concordance-with-prescribing-information
#17
Anthony G Doufas, Orestis A Panagiotou, Periklis Panousis, Shane Shucheng Wong, John P A Ioannidis
OBJECTIVE: To determine whether drugs used to treat diverse conditions cause insomnia symptoms and whether their prescription information is concordant with this evidence. METHODS: We conducted a survey of meta-analyses (Cochrane Database of Systematic Reviews) and comparisons with package inserts compiled in the Physicians' Desk Reference (PDR). We identified randomized controlled trials (RCTs) in which any drug had been evaluated vs placebo and sleep had been assessed...
January 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/27832824/genome-of-the-asian-longhorned-beetle-anoplophora-glabripennis-a-globally-significant-invasive-species-reveals-key-functional-and-evolutionary-innovations-at-the-beetle-plant-interface
#18
Duane D McKenna, Erin D Scully, Yannick Pauchet, Kelli Hoover, Roy Kirsch, Scott M Geib, Robert F Mitchell, Robert M Waterhouse, Seung-Joon Ahn, Deanna Arsala, Joshua B Benoit, Heath Blackmon, Tiffany Bledsoe, Julia H Bowsher, André Busch, Bernarda Calla, Hsu Chao, Anna K Childers, Christopher Childers, Dave J Clarke, Lorna Cohen, Jeffery P Demuth, Huyen Dinh, HarshaVardhan Doddapaneni, Amanda Dolan, Jian J Duan, Shannon Dugan, Markus Friedrich, Karl M Glastad, Michael A D Goodisman, Stephanie Haddad, Yi Han, Daniel S T Hughes, Panagiotis Ioannidis, J Spencer Johnston, Jeffery W Jones, Leslie A Kuhn, David R Lance, Chien-Yueh Lee, Sandra L Lee, Han Lin, Jeremy A Lynch, Armin P Moczek, Shwetha C Murali, Donna M Muzny, David R Nelson, Subba R Palli, Kristen A Panfilio, Dan Pers, Monica F Poelchau, Honghu Quan, Jiaxin Qu, Ann M Ray, Joseph P Rinehart, Hugh M Robertson, Richard Roehrdanz, Andrew J Rosendale, Seunggwan Shin, Christian Silva, Alex S Torson, Iris M Vargas Jentzsch, John H Werren, Kim C Worley, George Yocum, Evgeny M Zdobnov, Richard A Gibbs, Stephen Richards
BACKGROUND: Relatively little is known about the genomic basis and evolution of wood-feeding in beetles. We undertook genome sequencing and annotation, gene expression assays, studies of plant cell wall degrading enzymes, and other functional and comparative studies of the Asian longhorned beetle, Anoplophora glabripennis, a globally significant invasive species capable of inflicting severe feeding damage on many important tree species. Complementary studies of genes encoding enzymes involved in digestion of woody plant tissues or detoxification of plant allelochemicals were undertaken with the genomes of 14 additional insects, including the newly sequenced emerald ash borer and bull-headed dung beetle...
November 11, 2016: Genome Biology
https://www.readbyqxmd.com/read/27816833/diet-body-size-physical-activity%C3%A2-and-risk-of-prostate-cancer-an-umbrella-review-of-the-evidence
#19
REVIEW
Georgios Markozannes, Ioanna Tzoulaki, Dimitra Karli, Evangelos Evangelou, Evangelia Ntzani, Marc J Gunter, Teresa Norat, John P Ioannidis, Konstantinos K Tsilidis
The existing literature on the relationship between diet, body size, physical activity and prostate cancer risk was summarised by the World Cancer Research Fund Continuous Update Project (CUP). An evaluation of the robustness of this evidence is required to help inform public health policy. The robustness of this evidence was evaluated using several criteria addressing evidence strength and validity, including the statistical significance of the random effects summary estimate and of the largest study in a meta-analysis, number of prostate cancer cases, between-study heterogeneity, 95% prediction intervals, small-study effects bias, excess significance bias and sensitivity analyses with credibility ceilings...
November 3, 2016: European Journal of Cancer
https://www.readbyqxmd.com/read/27789483/very-large-treatment-effects-in-randomised-trials-as-an-empirical-marker-to-indicate-whether-subsequent-trials-are-necessary-meta-epidemiological-assessment
#20
Myura Nagendran, Tiago V Pereira, Grace Kiew, Douglas G Altman, Mahiben Maruthappu, John P A Ioannidis, Peter McCulloch
OBJECTIVE:  To examine whether a very large effect (VLE; defined as a relative risk of ≤0.2 or ≥5) in a randomised trial could be an empirical marker that subsequent trials are unnecessary. DESIGN:  Meta-epidemiological assessment of existing published data on randomised trials. DATA SOURCES:  Cochrane Database of Systematic Reviews (2010, issue 7) with data on subsequent large trials updated to 2015, issue 12. ELIGIBILITY CRITERIA:  All binary outcome forest plots were selected, which contained an index randomised trial with a VLE that was nominally statistically significant (P<0...
October 27, 2016: BMJ: British Medical Journal
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