keyword
MENU ▼
Read by QxMD icon Read
search

Douglas Altman

keyword
https://www.readbyqxmd.com/read/29159946/extracellular-volume-with-bolus-only-technique-in-amyloidosis-patients-diagnostic-accuracy-correlation-with-other-clinical-cardiac-measures-and-ability-to-track-changes-in-amyloid-load-over-time
#1
Giulia Zumbo, Sharon V Barton, Douglas Thompson, Min Sun, Amna Abdel-Gadir, Thomas A Treibel, Daniel Knight, Ana Martinez-Naharro, Lane Thirusha, Julian D Gillmore, James C Moon, Philip N Hawkins, Marianna Fontana
BACKGROUND: Extracellular volume (ECV) by T1 mapping requires the contrast agent distribution to be at equilibrium. This can be achieved either definitively with a primed contrast infusion (infusion ECV), or sufficiently with a delay postbolus (bolus-only ECV). For large ECV, the bolus-only approach measures higher than the infusion ECV, causing some uncertainty in diseases such as amyloidosis. PURPOSE: To characterize the relationship between the bolus-only and current gold-standard infusion ECV in patients with amyloidosis...
November 21, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29150467/interventions-to-improve-adherence-to-reporting-guidelines-in-health-research-a-scoping-review-protocol
#2
David Blanco, Jamie J Kirkham, Douglas G Altman, David Moher, Isabelle Boutron, Erik Cobo
INTRODUCTION: There is evidence that the use of some reporting guidelines, such as the Consolidated Standards for Reporting Trials, is associated with improved completeness of reporting in health research. However, the current levels of adherence to reporting guidelines are suboptimal. Over the last few years, several actions aiming to improve compliance with reporting guidelines have been taken and proposed. We will conduct a scoping review of interventions to improve adherence to reporting guidelines in health research that have been evaluated or suggested, in order to inform future interventions...
November 16, 2017: BMJ Open
https://www.readbyqxmd.com/read/29145404/core-outcome-set-standards-for-development-the-cos-stad-recommendations
#3
Jamie J Kirkham, Katherine Davis, Douglas G Altman, Jane M Blazeby, Mike Clarke, Sean Tunis, Paula R Williamson
BACKGROUND: The use of core outcome sets (COS) ensures that researchers measure and report those outcomes that are most likely to be relevant to users of their research. Several hundred COS projects have been systematically identified to date, but there has been no formal quality assessment of these studies. The Core Outcome Set-STAndards for Development (COS-STAD) project aimed to identify minimum standards for the design of a COS study agreed upon by an international group, while other specific guidance exists for the final reporting of COS development studies (Core Outcome Set-STAndards for Reporting [COS-STAR])...
November 2017: PLoS Medicine
https://www.readbyqxmd.com/read/29113936/reproducible-research-practices-are-underused-in-systematic-reviews-of-biomedical-interventions
#4
Matthew J Page, Douglas G Altman, Larissa Shamseer, Joanne E McKenzie, Nadera Ahmadzai, Dianna Wolfe, Fatemeh Yazdi, Ferrán Catalá-López, Andrea C Tricco, David Moher
OBJECTIVES: To evaluate how often reproducible research practices, which allow others to recreate the findings of studies, given the original data, are used in systematic reviews (SRs) of biomedical research. STUDY DESIGN AND SETTING: We evaluated a random sample of SRs indexed in MEDLINE® during February 2014, which focused on a therapeutic intervention and reported at least one meta-analysis. Data on reproducible research practices in each SR were extracted using a 26-item form by one author, with a 20% random sample extracted in duplicate...
November 4, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/29096787/structural-and-functional-phenotyping-of-the-failing-heart-is-the-left-ventricular-ejection-fraction-obsolete
#5
REVIEW
Michael R Bristow, David P Kao, Khadijah K Breathett, Natasha L Altman, John Gorcsan, Edward A Gill, Brian D Lowes, Edward M Gilbert, Robert A Quaife, Douglas L Mann
Diagnosis, prognosis, treatment, and development of new therapies for diseases or syndromes depend on a reliable means of identifying phenotypes associated with distinct predictive probabilities for these various objectives. Left ventricular ejection fraction (LVEF) provides the current basis for combined functional and structural phenotyping in heart failure by classifying patients as those with heart failure with reduced ejection fraction (HFrEF) and those with heart failure with preserved ejection fraction (HFpEF)...
November 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/29040525/beta-blockers-for-heart-failure-with-reduced-mid-range-and-preserved-ejection-fraction-an-individual-patient-level-analysis-of-double-blind-randomized-trials
#6
John G F Cleland, Karina V Bunting, Marcus D Flather, Douglas G Altman, Jane Holmes, Andrew J S Coats, Luis Manzano, John J V McMurray, Frank Ruschitzka, Dirk J van Veldhuisen, Thomas G von Lueder, Michael Böhm, Bert Andersson, John Kjekshus, Milton Packer, Alan S Rigby, Giuseppe Rosano, Hans Wedel, Åke Hjalmarson, John Wikstrand, Dipak Kotecha
Aims: Recent guidelines recommend that patients with heart failure and left ventricular ejection fraction (LVEF) 40-49% should be managed similar to LVEF ≥ 50%. We investigated the effect of beta-blockers according to LVEF in double-blind, randomized, placebo-controlled trials. Methods and results: Individual patient data meta-analysis of 11 trials, stratified by baseline LVEF and heart rhythm (Clinicaltrials.gov: NCT0083244; PROSPERO: CRD42014010012). Primary outcomes were all-cause mortality and cardiovascular death over 1...
October 10, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28830195/is-liver-perfusion-ct-reproducible-a-study-on-intra-and-interobserver-agreement-of-normal-hepatic-haemodynamic-parameters-obtained-with-two-different-software-packages
#7
COMPARATIVE STUDY
Elisa Almeida Sathler Bretas, Ulysses S Torres, Lucas Rios Torres, Daniel Bekhor, Celso Fernando Saito Filho, Douglas Jorge Racy, Lorenzo Faggioni, Giuseppe D'Ippolito
OBJECTIVE: 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)...
October 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28817867/false-reassurance-based-on-non-significant-results
#8
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
#9
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
#10
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
#11
COMPARATIVE STUDY
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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...
September 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28667088/consort-2010-statement-extension-checklist-for-reporting-within-person-randomised-trials
#18
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
#19
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
#20
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
keyword
keyword
120082
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"