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  • Contamination in trials of educational interventions 

    Keogh-Brown, M.R.; Bachmann, M.O.; Shepstone, L.; Hewitt, C.; Howe, A.; Ramsay, Craig R; Song, F; Miles, J.N.V.; Torgerson, D.J.; Miles, S.; Elbourne, Diana R.; Harvey, I.; Campbell, M.J. (Gray Publishing, 2007-10)
    Objectives: To consider the effects of contamination on the magnitude and statistical significance (or precision) of the estimated effect of an educational intervention, to investigate the mechanisms of contamination, and ...