- Fragility Index Calculator
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.
- Number Needed to Treat
Tool to calculate the number needed to treat (NNT) between two independent groups.
- Odds Ratio to Risk Ratio Conversion
Tool to convert OR (odds ratio) to RR (risk ratio) from logistic regression.
- Post-hoc Power Calculator
Calculator to determine the post-hoc power of an existing study.
- Sample Size Calculator
Calculator to determine the minimum number of subjects to enroll in a study for adequate power.