HLTB15H3 Lecture Notes - Lecture 3: Randomized Controlled Trial, The Lancet, Dependent And Independent Variables
9 Apr 2020
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Note: these objectives are addressed in week 2 and week 3 tutorials. Readings: aschengrau & seage, chapters 10 (bias) and 11 (confounding, galante j, dufour g, vainre m, et al. A mindfulness-based intervention to increase resilience to stress in university students (the mindful student study): a pragmatic randomised controlled trial. The following questions refer to the above study by galante et al. The questions focus on critically appraising a randomized trial, which builds on last week"s tutorial. 3 will further delve into selection bias, information bias, and confounding. Questions: define the terms internal validity , bias , selection bias , information bias , and. Internal validity: when systematic bias, confounding and random error have been ruled out as alternative explanations and the association is true. Bias: systematic error that results in an incorrect or invalid estimate of the measure of association.
