Minimum Detectable Effect

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Minimum Detectable Effect Size (MDES) is a critical part of power calculations.

Guidelines

We do not know in advance the effect of our policy. We want to design a precise way of measuring it. But precision is not cheap: need cost-benefit analysis to decide. We need to identify the smallest program effect size that it would be useful to detect, i.e. the smallest effect for which we would be able to say with statistical confidence that the program effect is statistically different from zero.

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This article is part of the topic Sampling & Power Calculations

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