Related Experiment Video
Updated: Oct 8, 2025
06:18
Measurement of Specific Mycobacterial Mistranslation Rates with Gain-of-function Reporter Systems
Published on: April 26, 2019
6.1K
The new normal? Redaction bias in biomedical science
David Robert Grimes1,2, James Heathers3
1School of Physical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland.
Royal Society Open Science
|December 30, 2021
Summary
Biomedical research reproducibility is threatened by inappropriate data redaction. Removing even a few extreme data points can skew results, potentially leading to unreliable medical science findings and patient risk.
Area of Science:
- Biomedical Science
- Research Methodology
- Statistical Analysis
Background:
- A significant portion of biomedical research lacks reproducibility, hindering medical progress and patient safety.
- Inappropriate statistical methods and analytical choices by researchers are identified as major contributors to this irreproducibility crisis.
Purpose of the Study:
- To formally quantify the impact of inappropriate data redaction beyond a threshold value in biomedical science.
- To elucidate the potential for data truncation to accidentally or deliberately create spurious results in significance testing.
Main Methods:
- Analysis of dataset truncation through the removal of extreme data points.
- Quantification of the effect of removing a small number of data points on statistical significance.
Main Results:
- The removal of a surprisingly small number of extreme data points can dramatically alter research outcomes.
- Demonstration of how data redaction can engineer spurious results in significance testing.
Conclusions:
- Inappropriate data redaction poses a significant risk to the integrity of biomedical literature.
- Researchers must studiously avoid redaction bias and implement mitigation strategies to maintain research quality in medical science.
Related Concept Videos
01:22Bias
5.9K
Bias refers to any tendency that prevents a question from being considered unprejudiced. In research, bias occurs when one outcome or answer is selected or encouraged over others in sampling or testing. Bias can occur during any research phase, including study design, data collection, analysis, and publication.
In statistics, a sampling bias is created when a sample is collected from a population, and some members of the population are not as likely to be chosen as others (remember, each member...
In statistics, a sampling bias is created when a sample is collected from a population, and some members of the population are not as likely to be chosen as others (remember, each member...
5.9K
01:29Bias in Epidemiological Studies
769
Biases can arise at various stages of research, from study design and data collection to analysis and interpretation. Recognizing and addressing these biases is essential to ensure the validity and reliability of epidemiological findings.Broadly speaking, biases in epidemiology fall into three main categories: selection bias, information bias, and confounding. A more detailed description of possible biases is:
769
02:23RNA Editing
9.2K
RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
9.2K
02:07Improving Translational Accuracy
12.0K
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
12.0K
02:28Leaky Scanning
5.3K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.3K
02:46Genome Copying Errors
4.6K
DNA replication is a well-evolved process that copies millions of base pairs with high fidelity during each cell division. Occasionally a wrong base or a long stretch of wrong bases may get added to the daughter strands. If the errors are left unchecked, cells might accumulate several mutations that might endanger their survival. Therefore, the copying errors are checked and repaired at three levels.
4.6K