More importantly, many genes with aberrant DNA methylation were excluded from further evaluation because of lack of consistent evidence for their biological functions.
This report contends that the preclinical evaluation of NXY-059 lacked strenuous testing and was not shown to reproducibly lead to robust protection in extended time windows in clinically relevant stroke models, at several different academic research laboratories.
Numerous reasons have been identified: disbelief in the benefits of evaluation, lack of confidence in whether training has an impact on the organization, as well as lack of resources, expertise, and organizational support [ 21].
Although the evaluation of research productivity would ideally include the assessment of impact, in practice this is extremely difficult to achieve, because the multifaceted nature of evaluation, the lack of standard terminology, and the heterogeneity of empirical experiences make it hard to identify a preferred model of impact measurement [ 8].
While a number of STAT3 inhibitors have been shown to enhance the efficacy of therapeutic agents in vitro, the majority of them have yet to enter clinical evaluation mostly because of lack of efficacy issues.
37 Limitations of this review include heterogeneity of the evaluation methods, lack of consistent outcome blinding methods, and a relatively small number of relevant studies identified.
Currently existing predictive models for massive blood transfusion in major trauma patients had limitations for sequential evaluation of patients and lack of dynamic parameters.
Possible selection bias, use of a screening tool alone without further diagnostic evaluation of depression, and lack of direct comparison with a healthy control group should be considered in interpretation of these results.
This study shows that NOUs, in relation to their evaluation of health effects, lack transparency and, overall, show few signs of the use of systematic processes as far as scientific quality is concerned.
The evaluation of accuracy revealed lack of convergence for all parameters (values highly above the acceptable cut-off), and the PSG data set was the bottom-ranked group in analysis of the concordance between trees from independent runs.
