A 2012 study of Dr. Adamson's patients had found, on average, a seven-year reduction in perceived age, but that study used less rigorous criteria.
To ensure that the surround shift described above is not just a consequence of the cell selection procedure employed, we repeated the analysis based on a less rigorous selection criterion.
We postulated that higher referral rates may reflect the use of less rigorous selection criteria by some GPs.
However, some researchers have reported conflicting results of randomized controlled trials in which delirium was assessed using less rigorous, unvalidated criteria [ 5, 6].
However, using less rigorous statistical criteria for determining significance, such as fold-change, results in higher false discovery rates [ 29] and thus would be predicted to overestimate the number of significantly regulated genes.
Third, we focused only on interventional trials as specified in the meta-analysis protocol and did not include any observational data that would potentially allow for larger sample sizes in the different subgroups and increases in the patient spectrum, as in observational studies less rigorous exclusion criteria usually apply.
While there are those who feel that only the most scientifically rigorous methodology must be employed if one hopes to draw meaningful conclusions, others feel that less stringent criteria in terms of comparison groups can yield meaningful inferential results.
The second level of determining response rates was less rigorous, similar to the GAIT criteria, and used a 20% reduction in WOMAC pain subscale and a 10 mm reduction in VAS pain.
The fact that we found few studies fulfilling our eligibility criteria, even as accepting less rigorous designs for evaluating effectiveness of interventions, confirms that little research effort is placed on this matter.
Some analysts also said the measure was less rigorous than many had feared.
