This kind of a "self-selection" of participants may have led to a certain bias in the composition of the group of participants.
For some of the entities at the low end of this spectrum, a certain bias through frequent biopsies at early stages can be suspected (e.g. tumors of skin, thyroid, prostate), although pre-maligant tumors had been excluded from the analysis.
This change reflects the complexity of the human genome and a certain bias of each method.
The star of the hearing had a certain bias: David Cone, the former Yankees pitcher and now an occasional YES commentator.
"The use of the term overpopulation portrays a certain bias, that you're focusing on the number of people rather than the level of development," he said.
As already discussed by the authors, the results of this study might exhibit a certain bias, as the study followed a strict protocol of cleaning all polyps with water, simethicone, and N-acetylcysteine prior to the assessment of polyps [ 21].
While for most cases this approach provides data which correlates well with actual blood parameters, it lacks the ability to provide real-time monitoring of patients in critical conditions, requires invasive procedures for blood extraction, and often involves a certain bias of some parameters owing to the inherent differences between ex vivo measurements and the true physiological properties.
Due to the Rician nature of noise in traditional systems, a certain bias in the estimation is known to exist.
A certain bias of the results obtained could be due to the fact that the markers initially were selected for forensic purposes with a high level of polymorphism in different ethnic groups.
