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Printable Handouts
Navigable Slide Index
- Introduction
- Outline
- Definitions
- Fabrication, falsification, plagiarism (FFP)
- Other questionable research practices
- Sources of data errors in clinical trials
- Prevalence
- Questionable research practices
- How common is data fraud?
- Falsification and alteration in self reports
- Falsification and alteration in non-self reports
- Prevalence conclusions
- Examples
- Modern high-profile research misconduct examples
- Roger Poisson
- Werner Bezwoda
- Robert Fiddes
- H.W. Snyder & R. Peugeot
- Yoshitaka Fujii
- Anil Potti
- Hiroaki Matsubara
- Kyoto prefectural university of medicine apology
- Motivations
- Why did they do it?
- Contributing factors
- Physician-scientists less rigorous?
- Rationale from Poisson
- Statistical detection
- Gregor Mendel and R.A. Fisher
- Mendel’s data: too good to be true?
- Fisher on Mendel’s data
- Fujii et al.: “Incredibly Nice” data?
- Fujii’s studies summary: Fisher’s p-value method
- Hierarchical data structure: multi-site clinical trials
- Central statistical monitoring (CSM)
- Data fraud statistical detection: principles
- Data fraud statistical detection: general approach
- Mahalanobis distance
- Mahalanobis distance (two dimensions)
- Example: Mahalanobis distance
- Visualization: parallel coordinates
- Parallel coordinate plot - 9 variables at 16 sites
- Other statistical techniques
- Conclusions
- Sources for talk
Topics Covered
- Definitions (fabrication, falsification, plagiarism)
- Prevalence of data fraud
- Examples (Modern high-profile examples of research misconduct)
- Motivations: why did they do it?
- Statistical detection
Links
Series:
Categories:
Talk Citation
George, S. (2016, September 29). Data fraud in clinical trials [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved November 23, 2024, from https://doi.org/10.69645/SXAA6618.Export Citation (RIS)
Publication History
Financial Disclosures
- Prof. Stephen George has not informed HSTalks of any commercial/financial relationship that it is appropriate to disclose.
Other Talks in the Series: The Risk of Bias in Randomized Clinical Trials
Transcript
Please wait while the transcript is being prepared...
0:00
My name is Stephen George.
I am a Professor Emeritus
of Biostatistics
in the Department of Biostatistics
and Bioinformatics at Duke University.
My topic today is
"Data Fraud in Clinical Trials".
0:15
An outline is given on this slide.
There are five different areas.
First, we'll talk about some definitions
that are important in setting
the stage for the discussion,
some estimates of prevalence
of data fraud,
some key examples
that have been uncovered,
some information on motivation
and contributing factors,
and end with
some statistical detection methods.
0:43
First, definitions.
0:46
The US Public Health Service
has defined "Research misconduct
means fabrication, falsification,
or plagiarism
in proposing, performing,
or reviewing research,
or in reporting research results...
Research misconduct does not include
honest error or differences of opinion".
That last stanza is very important.
In this presentation,
I will focus on what I call "data fraud"
which is simply the fabrication
or falsification of data in clinical trials.
1:20
In addition to data fraud,
there are of course
other questionable research practices
in clinical trials.
I'm not going to talk about
these much today,
but it's important to note
that these may be at least as important,
if not more so, in producing
questionable results.
And these include inadequate
or inappropriate design and analysis,
selective reporting of results,
inappropriate subgroup analyses,
not admitting that some data are missing,
ignoring outliers,
over-interpretation of results
from small trials,
post-hoc analyses that are done
but not admitted as being post-hoc,
and withholding details of methodology,
or someone's day-to-day
withholding the data.