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Douglas Altman

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https://www.readbyqxmd.com/read/28830195/is-liver-perfusion-ct-reproducible-a-study-on-intra-and-inter-observer-agreement-of-normal-hepatic-hemodynamic-parameters-obtained-with-two-different-software-packages
#1
Elisa Almeida Sathler Bretas, Ulysses S Torres, Lucas Torres, Daniel Bekhor, Celso Fernando Saito Filho, Douglas Jorge Racy, Lorenzo Faggioni, Giuseppe D'Ippolito
OBJECTIVES: To evaluate the agreement between the measurements of perfusion CT parameters in normal livers by using two different software packages. METHODS: This retrospective study was based on 78 liver perfusion CT examinations acquired for detecting suspected liver metastasis. Patients with any morphological or functional hepatic abnormalities were excluded. The final analysis included 37 patients (59.7 ± 14.9 y). Two readers (1 and 2) independently measured perfusion parameters using different software packages from two major manufacturers (A and B)...
August 22, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28817867/false-reassurance-based-on-non-significant-results
#2
Douglas G Altman
No abstract text is available yet for this article.
August 18, 2017: Clinical Endoscopy
https://www.readbyqxmd.com/read/28814563/statistics-notes-percentage-differences-symmetry-and-natural-logarithms
#3
Tim J Cole, Douglas G Altman
No abstract text is available yet for this article.
August 16, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28814561/statistics-notes-what-is-a-percentage-difference
#4
Tim J Cole, Douglas G Altman
No abstract text is available yet for this article.
August 16, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28783754/cardiac-arrest-risk-standardization-using-administrative-data-compared-to-registry-data
#5
Anne V Grossestreuer, David F Gaieski, Michael W Donnino, Joshua I M Nelson, Eric L Mutter, Brendan G Carr, Benjamin S Abella, Douglas J Wiebe
BACKGROUND: Methods for comparing hospitals regarding cardiac arrest (CA) outcomes, vital for improving resuscitation performance, rely on data collected by cardiac arrest registries. However, most CA patients are treated at hospitals that do not participate in such registries. This study aimed to determine whether CA risk standardization modeling based on administrative data could perform as well as that based on registry data. METHODS AND RESULTS: Two risk standardization logistic regression models were developed using 2453 patients treated from 2000-2015 at three hospitals in an academic health system...
2017: PloS One
https://www.readbyqxmd.com/read/28756393/invited-commentary-methodological-issues-in-the-design-and-analysis-of-randomised-trials
#6
EDITORIAL
Mohammad Ali Mansournia, Douglas G Altman
No abstract text is available yet for this article.
July 29, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28729459/enhancing-the-usability-of-systematic-reviews-by-improving-the-consideration-and-description-of-interventions
#7
Tammy C Hoffmann, Andrew D Oxman, John Pa Ioannidis, David Moher, Toby J Lasserson, David I Tovey, Ken Stein, Katy Sutcliffe, Philippe Ravaud, Douglas G Altman, Rafael Perera, Paul Glasziou
No abstract text is available yet for this article.
July 20, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28720117/systematic-review-adherence-to-methodological-or-reporting-quality
#8
Kusala Pussegoda, Lucy Turner, Chantelle Garritty, Alain Mayhew, Becky Skidmore, Adrienne Stevens, Isabelle Boutron, Rafael Sarkis-Onofre, Lise M Bjerre, Asbjørn Hróbjartsson, Douglas G Altman, David Moher
BACKGROUND: Guidelines for assessing methodological and reporting quality of systematic reviews (SRs) were developed to contribute to implementing evidence-based health care and the reduction of research waste. As SRs assessing a cohort of SRs is becoming more prevalent in the literature and with the increased uptake of SR evidence for decision-making, methodological quality and standard of reporting of SRs is of interest. The objective of this study is to evaluate SR adherence to the Quality of Reporting of Meta-analyses (QUOROM) and PRISMA reporting guidelines and the A Measurement Tool to Assess Systematic Reviews (AMSTAR) and Overview Quality Assessment Questionnaire (OQAQ) quality assessment tools as evaluated in methodological overviews...
July 19, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28718938/quality-control-of-ultrasound-for-fetal-biometry-results-from-the-intergrowth-21-st-project
#9
Angelo Cavallaro, Stephen T Ash, Raffaele Napolitano, Sikolia Wanyonyi, Eric O Ohuma, Malid Molloholli, Joyce Sande, Ippokratis Sarris, Christos Ioannou, Tess Norris, Vera Donadono, Maria Carvalho, Manorama Purwar, Fernando C Barros, Yasmin A Jaffer, Enrico Bertino, Ruyan Pang, Michael G Gravett, Laurent J Salomon, Julia Alison Noble, Douglas G Altman, Aris T Papageorghiou
OBJECTIVES: To assess a comprehensive package of ultrasound quality control in a large multicentre study of fetal growth - the Fetal Growth Longitudinal Study of the INTERGROWTH-21(st) Project. METHODS: We performed quality control (QC) measures on 20,313 ultrasound scan images taken prospectively from 4,321 fetuses at 14-41 weeks' gestation in eight geographical locations. At the time of each ultrasound examination, three fetal biometric variables were measured in triplicate on separately generated images: head circumference (HC), abdominal circumference (AC) and femur length (FL)...
July 18, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28681707/the-comet-handbook-version-1-0
#10
REVIEW
Paula R Williamson, Douglas G Altman, Heather Bagley, Karen L Barnes, Jane M Blazeby, Sara T Brookes, Mike Clarke, Elizabeth Gargon, Sarah Gorst, Nicola Harman, Jamie J Kirkham, Angus McNair, Cecilia A C Prinsen, Jochen Schmitt, Caroline B Terwee, Bridget Young
The selection of appropriate outcomes is crucial when designing clinical trials in order to compare the effects of different interventions directly. For the findings to influence policy and practice, the outcomes need to be relevant and important to key stakeholders including patients and the public, health care professionals and others making decisions about health care. It is now widely acknowledged that insufficient attention has been paid to the choice of outcomes measured in clinical trials. Researchers are increasingly addressing this issue through the development and use of a core outcome set, an agreed standardised collection of outcomes which should be measured and reported, as a minimum, in all trials for a specific clinical area...
June 20, 2017: Trials
https://www.readbyqxmd.com/read/28673865/support-for-reporting-guidelines-in-surgical-journals-needs-improvement-a-systematic-review
#11
REVIEW
Riaz A Agha, Ishani Barai, Shivanchan Rajmohan, Seon Lee, Mohammed O Anwar, Alexander J Fowler, Dennis P Orgill, Douglas G Altman
INTRODUCTION: Evidence-based medicine works best if the evidence is reported well. Past studies have shown reporting quality to be lacking in the field of surgery. Reporting guidelines are an important tool for authors to optimize the reporting of their research. The objective of this study was to analyse the frequency and strength of recommendation for such reporting guidelines within surgical journals. METHODS: A systematic review of the 198 journals within the Journal Citation Report 2014 (surgery category) published by Thomson Reuters was undertaken...
June 30, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28667088/consort-2010-statement-extension-checklist-for-reporting-within-person-randomised-trials
#12
Nikolaos Pandis, Bryan Chung, Roberta W Scherer, Diana Elbourne, Douglas G Altman
No abstract text is available yet for this article.
June 30, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28654988/consort-extension-for-chinese-herbal-medicine-formulas-2017-recommendations-explanation-and-elaboration-traditional-chinese-version
#13
Chung-Wah Cheng, Tai-Xiang Wu, Hong-Cai Shang, You-Ping Li, Douglas G Altman, David Moher, Zhao-Xiang Bian
Editors' Note: This article is the traditional Chinese version of the CONSORT Extension for Chinese Herbal Medicine Formulas 2017: Recommendations, Explanation, and Elaboration. (Cheng C, Wu T, Shang H, Li, Y, Altman D, Moher D; CONSORT-CHM Formulas 2017 Group. CONSORT Extension for Chinese Herbal Medicine Formulas 2017: Recommendations, Explanation, and Elaboration. Ann Intern Med. 2017;167:112-21. [Epub 27 June 2017]. doi:10.7326/M16-2977).
July 18, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28654980/consort-extension-for-chinese-herbal-medicine-formulas-2017-recommendations-explanation-and-elaboration
#14
Chung-Wah Cheng, Tai-Xiang Wu, Hong-Cai Shang, You-Ping Li, Douglas G Altman, David Moher, Zhao-Xiang Bian
Chinese herbal medicine (CHM) formulas are the major components of traditional Chinese medicine (TCM) interventions. The general reporting quality of randomized controlled trials (RCTs) of CHM formulas is disappointing, although CONSORT (Consolidated Standards of Reporting Trials) Statement extensions for herbal medicinal interventions and acupuncture interventions are available. A group of TCM clinical experts, methodologists, epidemiologists, and editors has developed this CONSORT Extension for CHM Formulas (CONSORT-CHM Formulas 2017) through a comprehensive process, including publication of the draft version, solicitation of comments, revision, and finalization...
June 27, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28654957/consort-extension-for-chinese-herbal-medicine-formulas-2017-recommendations-explanation-and-elaboration-simplified-chinese-version
#15
Chung-Wah Cheng, Tai-Xiang Wu, Hong-Cai Shang, You-Ping Li, Douglas G Altman, David Moher, Zhao-Xiang Bian
Editors' Note: This article is the simplified Chinese version of the CONSORT Extension for Chinese Herbal Medicine Formulas 2017: Recommendations, Explanation, and Elaboration. (Cheng C, Wu T, Shang H, Li, Y, Altman D, Moher D; CONSORT-CHM Formulas 2017 Group. CONSORT Extension for Chinese Herbal Medicine Formulas 2017: Recommendations, Explanation, and Elaboration. Ann Intern Med. 2017;167:112-21. [Epub 27 June 2017]. doi:10.7326/M16-2977).
July 18, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28632286/consort-extension-for-chinese-herbal-medicine-formulas-2017-recommendations-explanation-and-elaboration-traditional-chinese-version
#16
Chung-Wah Cheng, Tai-Xiang Wu, Hong-Cai Shang, You-Ping Li, Douglas G Altman, David Moher, Zhao-Xiang Bian
Editors' Note: This article is the traditional Chinese version of the CONSORT Extension for Chinese Herbal Medicine Formulas 2017: Recommendations, Explanation, and Elaboration. (Cheng C, Wu T, Shang H, Li, Y, Altman D, Moher D; CONSORT-CHM Formulas 2017 Group. CONSORT Extension for Chinese Herbal Medicine Formulas 2017: Recommendations, Explanation, and Elaboration. Ann Intern Med. 2017. [Epub 27 June 2017]. doi:10.7326/M16-2977).
June 27, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28632282/consort-extension-for-chinese-herbal-medicine-formulas-2017-recommendations-explanation-and-elaboration
#17
Chung-Wah Cheng, Tai-Xiang Wu, Hong-Cai Shang, You-Ping Li, Douglas G Altman, David Moher, Zhao-Xiang Bian
Chinese herbal medicine (CHM) formulas are the major components of traditional Chinese medicine (TCM) interventions. The general reporting quality of randomized controlled trials (RCTs) of CHM formulas is disappointing, although CONSORT (Consolidated Standards of Reporting Trials) Statement extensions for herbal medicinal interventions and acupuncture interventions are available. A group of TCM clinical experts, methodologists, epidemiologists, and editors has developed this CONSORT Extension for CHM Formulas (CONSORT-CHM Formulas 2017) through a comprehensive process, including publication of the draft version, solicitation of comments, revision, and finalization...
June 27, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28632281/consort-extension-for-chinese-herbal-medicine-formulas-2017-recommendations-explanation-and-elaboration-simplified-chinese-version
#18
Chung-Wah Cheng, Tai-Xiang Wu, Hong-Cai Shang, You-Ping Li, Douglas G Altman, David Moher, Zhao-Xiang Bian
Editors' Note: This article is the simplified Chinese version of the CONSORT Extension for Chinese Herbal Medicine Formulas 2017: Recommendations, Explanation, and Elaboration. (Cheng C, Wu T, Shang H, Li, Y, Altman D, Moher D; CONSORT-CHM Formulas 2017 Group. CONSORT Extension for Chinese Herbal Medicine Formulas 2017: Recommendations, Explanation, and Elaboration. Ann Intern Med. 2017. [Epub 27 June 2017]. doi:10.7326/M16-2977).
June 27, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28630973/consort-statement-for-randomized-trials-of-nonpharmacologic-treatments-a-2017-update-and-a-consort-extension-for-nonpharmacologic-trial-abstracts
#19
Isabelle Boutron, Douglas G Altman, David Moher, Kenneth F Schulz, Philippe Ravaud
Incomplete and inadequate reporting is an avoidable waste that reduces the usefulness of research. The CONSORT (Consolidated Standards of Reporting Trials) Statement is an evidence-based reporting guideline that aims to improve research transparency and reduce waste. In 2008, the CONSORT Group developed an extension to the original statement that addressed methodological issues specific to trials of nonpharmacologic treatments (NPTs), such as surgery, rehabilitation, or psychotherapy. This article describes an update of that extension and presents an extension for reporting abstracts of NPT trials...
July 4, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28629396/identifying-approaches-for-assessing-methodological-and-reporting-quality-of-systematic-reviews-a-descriptive-study
#20
Kusala Pussegoda, Lucy Turner, Chantelle Garritty, Alain Mayhew, Becky Skidmore, Adrienne Stevens, Isabelle Boutron, Rafael Sarkis-Onofre, Lise M Bjerre, Asbjørn Hróbjartsson, Douglas G Altman, David Moher
BACKGROUND: The methodological quality and completeness of reporting of the systematic reviews (SRs) is fundamental to optimal implementation of evidence-based health care and the reduction of research waste. Methods exist to appraise SRs yet little is known about how they are used in SRs or where there are potential gaps in research best-practice guidance materials. The aims of this study are to identify reports assessing the methodological quality (MQ) and/or reporting quality (RQ) of a cohort of SRs and to assess their number, general characteristics, and approaches to 'quality' assessment over time...
June 19, 2017: Systematic Reviews
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