By using a stringent quality control method to exclude the analysis of potentially degraded samples, we have concluded that there is no large association between colorectal adenomas status and systemic levels of proinflammatory (TNF-α, IL-6, IL-1β) or T-cell polarizing (IL-12, IL-2, IL-10, IL-4, IL-17, IFN-γ) cytokines among a subset of participants from the IRAS Colon Study.
Therefore, the signal conveyed by the event of co-occurrence itself was controlled using a stringent site score cut-off (P-value 10-4).
Stothard et al. acknowledged using a stringent criterion for normality: "Children were regarded as having a good outcome only if they were essentially indistinguishable from controls" (p. 413).
In contrast, we may wish to use a less stringent control across genes, to obtain an experiment-wide error significance value: here false discovery rate (FDR) procedures, that control the probability that a significant result is also a true one, may be more appropriate.
To obtain the required discriminating power, a stringent control of gas parameters is necessary.
T5FEN is a highly processive exonuclease, which serves as a stringent control.
We used a stringent Pearson cut off threshold of r = 0.9 and clustered the data using a MCL inflation value (which controls the granularity of clustering) of 2.2 to ensure minimal genes falling into these clusters by chance.
Given the small number of participants who were eligible and completed this randomized controlled-trial, one could view the results as a second pilot study of the Headstrong program using a control condition (educational control) more stringent than the wait-list control used in the first plot study [12].
For this we screened B cell culture supernatants against a stringent comparator using a positive control monoclonal antibody, Trastuzumab, that recognizes the HER2/neu tumor antigen, expressed on breast cancer cells and on some melanoma cells [38].
As expected, odds ratios were small, but when considering that we applied a stringent test by using a psychiatric control group, these results are noteworthy and robust.
