Tool to calculate the fragility index of a study, which is one metric of how robust the results of a study are. The fragility index is calculated by changing the status of a patient from a non-event to an event until statistical significance is lost (p>0.05). The fragility index is the number of patients required to lose statistical significance within a study.
Tool to calculate the number needed to treat (NNT) between two independent groups.
Tool to convert OR (odds ratio) to RR (risk ratio) from logistic regression.
Calculator to determine the post-hoc power of an existing study.
Calculator to determine the minimum number of subjects to enroll in a study for adequate power.
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