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David J. Torgerson [7]David Torgerson [4]
  1.  45
    The Need for Randomised Controlled Trials in Educational Research.Carole J. Torgerson & David J. Torgerson - 2001 - British Journal of Educational Studies 49 (3):316 - 328.
    This paper argues for more randomised controlled trials in educational research. Educational researchers have largely abandoned the methodology they helped to pioneer. This gold-standard methodology should be more widely used as it is an appropriate and robust research technique. Without subjecting curriculum innovations to a RCT then potentially harmful educational initiatives could be visited upon the nation's children.
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  2.  30
    Poor reporting quality of key Randomization and Allocation Concealment details is still prevalent among published RCTs in 2011: a review.Laura Clark, Ulrike Schmidt, Puvan Tharmanathan, Joy Adamson, Catherine Hewitt & David Torgerson - 2013 - Journal of Evaluation in Clinical Practice 19 (4):703-707.
  3.  41
    Regression to the mean: treatment effect without the intervention.Veronica Morton & David J. Torgerson - 2005 - Journal of Evaluation in Clinical Practice 11 (1):59-65.
  4.  55
    Cluster randomized controlled trials.Suezann Puffer, David J. Torgerson & Judith Watson - 2005 - Journal of Evaluation in Clinical Practice 11 (5):479-483.
  5.  30
    Computer-based instruction for improving student nurses' general numeracy: is it effective? Two randomised trials.Hannah Ainsworth, Mollie Gilchrist, Celia Grant, Catherine Hewitt, Sue Ford, Moira Petrie, Carole J. Torgerson & David J. Torgerson - 2012 - Educational Studies 38 (2):151-163.
    In response to concern over the numeracy skills deficit displayed by student nurses, an online computer programme, ?Authentic World??, which aims to simulate a real-life clinical environment and improve the medication dosage calculation skills of users, was developed (Founded in 2004 Authentic World Ltd is a spin out company of Glarmorgan and Cardiff Universities, Cardiff, Wales UK.). Two randomised controlled trials were conducted, each at a UK University, in order to investigate the impact of Authentic World? on student nurses? general (...)
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  6.  28
    Allocation concealment: a methodological review.Laura Clark, Ulrike Schmidt, Puvan Tharmanathan, Joy Adamson, Catherine Hewitt & David Torgerson - 2013 - Journal of Evaluation in Clinical Practice 19 (4):708-712.
  7.  12
    Protocol for the development of a CONSORT extension for RCTs using cohorts and routinely collected health data.Brett D. Thombs, David Torgerson, Maureen Sauvé, David Erlinge, Eric I. Benchimol, Helena M. Verkooijen, Rudolf Uher, Lehana Thabane, Tjeerd P. van Staa, Kimberly A. Mc Cord, Marion K. Campbell, Philippe Ravaud, Isabelle Boutron, David Moher, Sinéad M. Langan, Merrick Zwarenstein, Chris Gale, Clare Relton, Ole Fröbert, Margaret Sampson, Lars G. Hemkens, Edmund Juszczak & Linda Kwakkenbos - 2018 - Research Integrity and Peer Review 3 (1).
    BackgroundRandomized controlled trials (RCTs) are often complex and expensive to perform. Less than one third achieve planned recruitment targets, follow-up can be labor-intensive, and many have limited real-world generalizability. Designs for RCTs conducted using cohorts and routinely collected health data, including registries, electronic health records, and administrative databases, have been proposed to address these challenges and are being rapidly adopted. These designs, however, are relatively recent innovations, and published RCT reports often do not describe important aspects of their methodology in (...)
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  8.  36
    Avoiding Bias in Randomised Controlled Trials in Educational Research.David J. Torgerson & Carole J. Torgerson - 2003 - British Journal of Educational Studies 51 (1):36-45.
    Randomised controlled trials (RCTs) are often seen as the 'gold standard' of evaluative research. However, whilst randomisation will ensure comparable groups, trials are still vulnerable to a range of biases that can undermine their internal validity. In this paper we describe a number of common threats to the internal validity of RCTs and methods of countering them. We highlight a number of examples from randomised trials in education and health care where problems of execution and analysis of the RCT has (...)
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  9.  35
    Simple sample size calculation.David J. Torgerson & Jeremy N. V. Miles - 2007 - Journal of Evaluation in Clinical Practice 13 (6):952-953.
  10.  27
    The use of minimization to form comparison groups in educational research.Carole J. Torgerson & David J. Torgerson - 2007 - Educational Studies 33 (3):333-337.
    Randomized controlled trials in educational research tend to be small. Small trials can have large, chance, imbalances in important covariates. For studies with sample sizes greater than 50, chance imbalances can be corrected using analysis of covariance; for small trials, however, statistical power is maximized if the trial is balanced and analysis of covariance is used in the analysis. The aim of the present study was to discuss methods of improving covariate balance in trial design and to demonstrate the method (...)
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  11.  58
    Bias in recruitment to cluster randomized trials: a review of recent publications. [REVIEW]Gwen Brierley, Sally Brabyn, David Torgerson & Judith Watson - 2012 - Journal of Evaluation in Clinical Practice 18 (4):878-886.