It provides power and sample size calculations for group sequential trials.
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Statistical power analysis and sample size determination are crucial elements of study design. A study that is too small may produce inconclusive results, while a study that is too large will waste scarce resources.
nTerim provides power and sample size calculations for group sequential trials. nTerim uses the alpha-spending function of Lan & DeMets and includes the spending functions from O’Brien-Fleming, Pocock, Hwang-Shih-DeCani and others.
Pros
- Excellent tools for system analysis and design
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Caution: New version is not compatible with old version. Bummer!
Just tried the new version and it's a huge improvement.
It's garbage, not the power calculation software as claimed.
Guest, May I ask what you didn't like about it?