Through the combined efforts of nationally placed collaborators, studies are delivered with larger populations, improving the external validity of results, and within a shorter timeframe.
340 341 The protocol should describe the procedures for and frequency of harms data collection, the overall surveillance timeframe, any instruments to be used, and their validity and reliability, if known.
This is likely to have been a relatively small proportion of the international medical graduates who registered via the PLAB test and who underwent ARCPs during the study timeframe and is unlikely to have significantly affected the validity of our findings.
While it is considered important, and is most common, to consider cumulative exposure to racism over the lifetime [ 41], issues of unreliable recall and recall bias affecting the reliability and validity of self-report measures are considered more problematic when the recall timeframe of stressors is longer and when data is collected retrospectively [ 2].
Further work is needed to determine the optimal recording timeframe for diary recordings, as adherence rates may decrease over time, thus reducing the validity of estimates.
In light of this uncertainty, the goals of this investigation were to infer, using nuclear-encoded SSU rRNA sequences, the timeframe within which the major lineages of heterokont algae originated and diversified, and to assess the validity of putative Proterozoic xanthophyte/phaeophyte fossils in the context of the reconstructed time-calibrated phylogeny.
Our findings provided a discharge planning guideline on the timeframe of different milestones which was agreed by the local experts which takes into account its validity and applicability in the local context.
Ultimately, choosing mouse models for translational studies might require compromises between construct validity and practical concerns – i.e. to optimize phenotypes that are robust and that develop within a timeframe that is cost effective for large-scale preclinical studies.
Hannan uses a dual timeframe.
