Mixed results from mtDNA likely reflect variation in mutation rates among genes and taxa as well as potential impacts of selection for this nonrecombinant molecule.
We used clinical data on the effects of inhaled long-acting beta-agonist (LABA) use on the risk of mortality among patients with obstructive pulmonary disease to illustrate the impact of selection of confounding variables for adjustment based on baseline comparisons.
According to these criteria, in this study, we have shown that cycling between pairwise combinations of three herbicides can slow, accelerate or have no impact on the dynamics of selection for herbicide resistance.
To mitigate the impact of selection, the only targets employed for rate calculations were putatively neutral synonymous mutations.
24 Although RCTs are often considered the gold standard of trial design due to their ability to minimise the impact of selection and information biases, control for confounding variables and potentially rule out chance, they have often been challenged on the grounds of external validity.
On the other hand, scanning multiple genes from different ontology classes and with different functional properties minimizes the bias that may result from analyzing genes involved in only one type of function when assessing the impact of selection on genetic diversity (as for most previous enzyme-based diversity studies).
The calculation of life expectancy in this material leads to the prediction that about a third of all patients receiving a certain type of hip resurfacing will become centenarians, illustrating the impact of selection bias that cannot be adequately adjusted for (Kandala et al. 2014).
To evaluate the potential impact of patient selection for coronary artery bypass graft surgery on long-term survival, the outcomes of 5,809 consecutive patients with symptomatic coronary disease documented by angiography at Duke University Medical Center were examined.
Some demographic and genetic features of this population, related to its insularity, offered the opportunity to study the impact of natural selection, for instance in determining resistance against malaria [1] and to clarify relevant aspects of the molecular bases of monogenic diseases common in Sardinia such as Thalassemia [2], Wilson disease [3], and APECED [4].
