As the first of the two components of such a wild card system, we advocate a weak signal methodology to take into account those wild cards that can be anticipated by scanning the decision environment.
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.
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.
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.
The literature on feeding people with dementia has been systematically reviewed, finding that there are few studies, with weak methodology and small sample sizes to inform interventions to improve feeding for those with dementia[ 46].
However, knowledge on this topic is still preliminary, as demonstrated by the presence of low quality studies due to weak methodology, small number of patients and short-term follow-up.
The systematic reviews all highlighted inconclusive and weak methodology in the studies reviewed, but noted sufficient evidence existed to support simulation as useful for psychomotor and communication skill development [ 32- 34] and to facilitate learning [ 35].
Moreover, most had weak methodologies: 67% were descriptive and only 20% used quasi-experimental or stronger designs.
