Trials were subjected to methodological assessments by the 10 point Delphi/PedRo checklists [ 36]. as trials of weaker methodology have been found to exaggerate results in a positive direction [ 37].
Moreover, most had weak methodologies: 67% were descriptive and only 20% used quasi-experimental or stronger designs.
Further, the studies presented above have weak methodologies, small sample sizes that are restricted to sub-populations, used convenience sampling and had a low response rate.
Two major reviews of interventions to improve adherence among children revealed limited support for home-based nursing care, peer support, and education sessions for caregivers and children to improve adherence; however, many studies suffered from weak methodologies, small sample sizes, and few were conducted in LMIC.
But some scientists and consumer advocates have criticized the National Cancer Institute study as having weak methodology.
Problems included small samples, weak methodology, poorly designed tools, limited analyses, and little dissemination.
The findings from the systematic review by Joss-Vassalli et al.[9] were presented, which demonstrated a weak evidence base (with studies being retrospective in nature and of low-to-moderate value of evidence), weak methodology, short-term follow up and a significant number of confounding variables, which were not controlled for.
Absent from the Breitbart article was my definition of party raiding, as well as the distinction between my "survival of the weakest" methodology and Limbaugh's "slow down the frontrunner" approach.
Generally, the studies were of weak methodology.
These spectacular results must be considered with caution because of weak methodology resulting from the retrospective nature of the study.
However, the authors see the main limitation of their review in the weak methodology of the included trails.
