However, some [ 6] administered adenine for a longer period time, whereas others measured PTH using assays that were different from ours, impeding comparisons across studies.
However, the lack of consistency in study design, methodology, and interpretation of menstrual cycle phases impedes comparison between the studies.
Fourthly, due to ethical issues, the surveyed hospitals have to be anonymous which impedes comparison with their actual levels of preparedness.
Researchers use varied inclusion criteria, definitions, baseline assessments, and outcome measures, which impede comparisons and consensus.
Further, the lack of an international taxonomy in health service research impedes comparisons of like with like.
In addition, the abundance and diversity of viruses in natural systems impede comparisons between metagenomic datasets, especially when comparing relatively short reads generated by some second-generation sequencing platforms.
In each of these studies, different cutoff values for renal rSO2 were used to define critical desaturation episodes, including criteria for relevant time periods of desaturations, which impedes comparisons between studies.
There is no clear consensus on how to operationalize it [ 8- 10] and the lack of a gold standard impedes comparisons across time, countries, and populations in a reliable manner.
However, restrictively it has to be mentioned that these functional imaging studies applied different paradigms, compared different patient groups, and used different comparisons between experimental conditions or groups, impeding direct comparison between these studies.
Response shift is generally associated with a change in the meaning of test scores, impeding the comparison of repeated measurements.
