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123 results on '"Altman, Douglas G"'

1. Taking healthcare interventions from trial to practice

Author

Glasziou, Paul, Chalmers, Iain, Altman, Douglas G., Bastian, Hilda, Boutron, Isabelle, Brice, Anne, Jamtvedt, Gro, Farmer, Andrew, Ghersi, Davina, Groves, Trish, Heneghan, Carl, Hill, Sophie, Lewin, Simon, Michie, Susan, Perera, Rafael, Pomeroy, Valerie, Tilson, Julie, Shepperd, Sasha, and Williams, John W.

Subjects
Clinical trials -- Evaluation, Medical journals -- Criticism and interpretation, Medical personnel -- Research, Medical personnel -- Practice
Published
2010

4. Ten steps towards improving prognosis research

Author

Hemingway, Harry, Riley, Richard D., and Altman, Douglas G.

Subjects
Medical research -- Quality management, Medical research -- Methods, Medical research -- Evaluation, Medicine, Experimental -- Quality management, Medicine, Experimental -- Methods, Medicine, Experimental -- Evaluation
Published
2010

9. Prognosis and prognostic research: what, why and how?

Author

Moons, Karel G.M., Royston, Patrick, Vergouwe, Yvonne, Grobbee, Diederick E., and Altman, Douglas G.

Subjects
Prion diseases -- Development and progression, Prion diseases -- Risk factors, Prions -- Research, Tonsillectomy -- Usage, Tonsillitis -- Care and treatment
Published
2009

12. Improving the reporting of pragmatic trials: an extension of the CONSORT statement

Author

Zwarenstein, Merrick, Treweek, Shaun, Tunis, Sean, Altman, Douglas G., Gagnier, Joel J., Haynes, Brian, Oxman, Andrew D., and Moher, David

Subjects
Practice guidelines (Medicine) -- Evaluation, Clinical trials -- Management, Clinical trials -- Laws, regulations and rules, Government regulation, Company business management
Published
2008

13. Empirical evidence of bias in treatment effect estimates in controlled trials with different interventions and outcomes: meta-epidemiological study

Author

Wood, Lesley, Egger, Matthias, Juni, Peter, Gluud, Lise Lotte, Schulz, Kenneth F., Altman, Douglas G, Wood, Anthony J.G., Gluud, Christian, Martin, Richard M., and Sterne, Jonathan A.C.

Subjects
Clinical trials -- Research, Clinical trials -- Management, Epidemiology -- Research, Meta-analysis -- Usage, Outcome and process assessment (Health Care) -- Evaluation, Company business management
Published
2008

14. Waiving confidentiality for the greater good

Author

An-Wen Chan, Upshur, Ross, Singh, Jerome A., Ghersi, Davina, Chapuis, Francois, and Altman, Douglas G.

Subjects
Medical research -- Laws, regulations and rules, Medicine, Experimental -- Laws, regulations and rules, Medical protocols -- Comparative analysis, Government regulation
Published
2006

17. CONSORT statement: extension to cluster randomised trials

Author

Campbell, Marion K., Elbourne, Diana R., and Altman, Douglas G.

Subjects
Clinical trials -- Research, Methodology -- Research, Health, Research
Abstract

Reports of cluster randomised trials require additional information to allow readers to interpret them accurately The effective reporting of randomised controlled trials has received useful attention in recent years. Many [...]

Published
2004

18. Measuring inconsistency in meta-analyses

Author

Higgins, Julian PT, Thompson, Simon G., Deeks, Jonathan J., and Altman, Douglas G.

Subjects
Meta-analysis -- Methods -- Analysis, Medical research -- Analysis -- Methods, Medicine, Experimental -- Analysis -- Methods, Clinical trials -- Analysis -- Methods, Health, Analysis, Methods
Abstract

Summary points Inconsistency of studies' resets in a meta-analysis reduces the confidence of recommendations about treatment Inconsistency is usually assessed with a test for heterogeneity, but problems of power can [...]

Published
2003

19. Validity of indirect comparison for estimating efficacy of competing interventions: empirical evidence from published meta-analyses. (Papers)

Author

Song, Fujian, Altman, Douglas G., Glenny, Anne-Marie, and Deeks, Jonathan J.

Subjects
Meta-analysis -- Usage -- Methods, Outcome and process assessment (Health Care) -- Methods -- Evaluation -- Usage, Clinical trials -- Evaluation -- Usage -- Methods, Health, Evaluation, Usage, Methods
Abstract

Abstract Objective To determine the validity of adjusted indirect comparisons by using data from published meta-analyses of randomised trials. Design Direct comparison of different interventions in randomised trials and adjusted [...]

Published
2003

20. Confidence intervals for the number needed to treat

Author

Altman, Douglas G.

Subjects
Confidence intervals -- Analysis, Clinical trials -- Analysis, Medical statistics -- Analysis, Health, Analysis
Abstract

The number needed to treat (NNT) is a useful way of reporting the results of randomised controlled trials.[1] In a trial comparing a new treatment with a standard one, the [...]

Published
1998

25. Randomised trial of educational visits to enhance use of systematic reviews in 25 obstetric units

Author

Wyatt, Jeremy C., Paterson-Brown, Sarah, Johanson, Richard, Altman, Douglas G., Bradburn, Michael J., and Fisk, Nicholas M.

Subjects
Obstetrics -- Study and teaching, Evidence-based medicine -- Study and teaching, Health, Study and teaching
Abstract

Introduction Although local circumstances must always be taken into account, it is acknowledged that as far as possible clinical practice should be guided by rigorous evidence from large trials or [...]

Published
1998

43. Indirect comparison meta-analysis of aspirin therapy after coronary surgery

Author

Lim, Eric, Ali, Ziad, Ali, Ayyaz, Routledge, Tom, Edmonds, Lyn, Altman, Douglas G., and Large, Stephen

Subjects
Aspirin -- Health aspects -- Evaluation, Heart attack -- Prevention -- Health aspects, Health, Prevention, Evaluation, Health aspects
Abstract

Abstract Objectives To evaluate the efficacy of low and medium dose aspirin therapy after coronary surgery by using an indirect comparison meta-analysis. Data sources Systematic literature search of Medline, Embase, [...]

Published
2003

44. Concealing treatment allocation in randomised trials

Author

Altman, Douglas G. and Schulz, Kenneth F.

Subjects
Clinical trials -- Management, Health, Company business management, Management
Abstract

We have previously explained why random allocation of treatments is a required design feature of controlled trials[1] and explained how to generate a random allocation sequence.[2] Here we consider the [...]

Published
2001

45. Systematic reviews of evaluations of prognostic variables

Author

Altman, Douglas G.

Subjects
Meta-analysis -- Evaluation -- Analysis, Medical literature -- Analysis, Diseases -- Prognosis -- United Kingdom, Health, Evaluation, Analysis, Prognosis
Abstract

Summary points Systematic reviews are applicable to all types of research design, and studies of prognostic variables are an important additional area where appropriate methodology should be applied Prognostic variables [...]

Published
2001

46. Assessing the quality of controlled clinical trials

Author

Juni, Peter, Altman, Douglas G., and Egger, Matthias

Subjects
Meta-analysis -- Methods, Clinical trials -- Evaluation -- Methods, Health, Evaluation, Methods
Abstract

This is the first in a series of four articles Summary points Empirical studies show that inadequate quality of trials may distort the results from systematic reviews and meta-analyses The [...]

Published
2001

47. Blinding in clinical trials and other studies

Author

Day, Simon J. and Altman, Douglas G.

Subjects
Clinical trials -- Methods, Health, Methods
Abstract

Human behaviour is influenced by what we know or believe. In research there is a particular risk of expectation influencing findings, most obviously when there is some subjectivity in assessment, [...]

Published
2000

48. The quality of systematic reviews

Author

Senn, Stephen, Altman, Douglas G., Deeks, Jonathan J., Clarke, Mike, Cates, Christopher, Barnes, N C., Hallett, C, Harris, T AJ, Wilson, Carole, Waugh, Paula, Jadad, Alejandro R., Moher, Michael, Browman, George P., Booker, Lynda, Sigouin, Christopher, Fuentes, Mario, and Stevens, Robert

Subjects
Meta-analysis -- Evaluation, Health, Evaluation
Abstract

Review is biased EDITOR--In discussing meta-analyses in the treatment of asthma, Jadad et al state that most reviews published in peer reviewed journals or funded by industry have serious methodological [...]

Published
2000

49. The odds ratio

Author

Bland, J Martin and Altman, Douglas G.

Subjects
Medical statistics -- Analysis, Health, Analysis
Abstract

In recent years odds ratios have become widely used in medical reports--almost certainly some will appear in today's BMJ. There are three reasons for this. Firstly, they provide an estimate [...]

Published
2000

50. Calculating the number needed to treat for trials where the outcome is time to an event

Author

Altman, Douglas G. and Andersen, Per Kragh

Subjects
Medical research -- Methods -- Analysis, Medicine, Experimental -- Methods -- Analysis, Medical statistics -- Analysis -- Methods, Health, Analysis, Methods
Abstract

The number of patients who need to be treated to prevent one additional event (number needed to treat; NNT) has become a widely used measure of treatment benefit derived from [...]

Published
1999

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