Fragility index
How many patients' outcomes would need to change for a significant trial result to lose significance.
Inputs
0 of 4count
count
count
count
When to use
- Appraising a trial with a significant dichotomous primary outcome.
Pearls and pitfalls
- Compare the index with the number lost to follow-up.
Why use
A plain-language measure of how robust a result is.
Add events to the group with fewer events until Fisher's exact two-sided P ≥ 0.05