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  1.  19
    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.  9
    Randomized Trial Within a Trial of Yellow ‘Post-It Notes’ Did Not Improve Questionnaire Response Rates Among Participants in a Trial of Treatments for Neck Pain.Helen E. Tilbrook, Taeko Becque, Hannah Buckley, Hugh MacPherson, Mathew Bailey & David J. Torgerson - 2015 - Journal of Evaluation in Clinical Practice 21 (2):202-204.
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  3.  33
    Cluster Randomized Controlled Trials.Suezann Puffer, David J. Torgerson & Judith Watson - 2005 - Journal of Evaluation in Clinical Practice 11 (5):479-483.
  4.  25
    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.
  5.  16
    Simple Sample Size Calculation.David J. Torgerson & Jeremy N. V. Miles - 2007 - Journal of Evaluation in Clinical Practice 13 (6):952-953.
  6.  13
    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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  7.  5
    Determining the Optimal Approach to Identifying Individuals with Chronic Obstructive Pulmonary Disease: The DOC Study.Sarah J. Ronaldson, Lisa Dyson, Laura Clark, Catherine E. Hewitt, David J. Torgerson, Brendan G. Cooper, Matt Kearney, William Laughey, Raghu Raghunath, Lisa Steele, Rebecca Rhodes & Joy Adamson - 2018 - Journal of Evaluation in Clinical Practice 24 (3):487-495.
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  8.  8
    A Randomized, Embedded Trial of Pre-Notification of Trial Participation Did Not Increase Recruitment Rates to a Falls Prevention Trial.Catherine Arundel, Laura Jefferson, Matthew Bailey, Sarah Cockayne, Kate Hicks, Lorraine Loughrey, Sara Rodgers & David J. Torgerson - 2017 - Journal of Evaluation in Clinical Practice 23 (1):73-78.
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  9.  15
    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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  10.  9
    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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