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Post-hoc Power Analyses

These resources explain what post-hoc power analyses are and why they aren’t useful in most cases.

A simple, clear blog post explaining what observed power (post-hoc power) is and why it is a “useless statistical concept”.

A short, clear, peer-reviewed article explaining “why it is nonsensical to use retrospective power analyses to conduct a postmortem on your study”.

The Biostats4you website was developed to serve medical and public health researchers and professionals who wish to learn more about biostatistics.

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