Results 11 to 20 of about 4,896,431 (278)

The Percent Fragility Index [PDF]

open access: yesINTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH, 2023
This article proposes the Percent Fragility Index (PFI) as an improved measure of statistical fragility in biomedical research. The PFI quantifies the percentage change in outcomes needed to change a study's statistical significance from positive to negative or vice-versa.
Thomas F Heston, Heston, Thomas
core   +6 more sources

A critique of the fragility index

open access: yesThe Lancet Oncology, 2019
In The Lancet Oncology , Joseph Del Paggio and Ian Tannock report on a retrospective analysis of the fragility indices of phase 3 trials used by the US Food and Drug Administration (FDA) to approve anticancer drugs. 1 The authors conclude that “many phase 3 randomised controlled trials supporting FDA-approved anticancer drugs have a low fragility index,
Machado, Tiago   +4 more
core   +8 more sources

Assessing and visualizing fragility of clinical results with binary outcomes in R using the fragility package [PDF]

open access: yesPLoS ONE, 2022
With the growing concerns about research reproducibility and replicability, the assessment of scientific results’ fragility (or robustness) has been of increasing interest.
Lifeng Lin, Haitao Chu
doaj   +3 more sources

Fragility exposure index: Concepts, measurement, and application [PDF]

open access: yesReview of Development Economics, 2022
AbstractDefinitions of fragility are focused at the level of the state, but this should not be considered to suggest that individuals with heterogeneous endowments experience a state of fragility in the same way. Nor does it suggest that all subregions of a fragile country exist in this state.
Ghassan Baliki   +3 more
openaire   +4 more sources

Nonattainability of the Fragility Index. [PDF]

open access: yesCureus
The fragility index (FI) is intended to quantify how many outcome changes would be required to convert a statistically significant two-arm trial result into a nonsignificant one. A reliable statistical metric should produce a result for every valid case it evaluates.
Heston TF.
europepmc   +3 more sources

Beyond the Fragility Index. [PDF]

open access: yesPharm Stat
ABSTRACTThe results of randomized clinical trials (RCTs) are frequently assessed with the fragility index (FI). Although the information provided by FI may supplement the p value, this indicator presents intrinsic weaknesses and shortcomings. In this article, we establish an analysis of fragility within a broader framework so that it can reliably ...
Quatto P, Ripamonti E, Marasini D.
europepmc   +4 more sources

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