This is a simplistic analysis -- campaigns and committees use turnout scoring and persuasion scoring based on a more rigorous series of variables to more precisely define these categories (for more on that, read Sasha Issenberg's latest which goes into these methods in much greater detail) -- but it shows that the decision facing many campaigns is not so cut and dry.
Our molecular data, which were rigorously analyzed with phylogenetic methods, contradict species distinctions based upon non-rigorous intuition using highly variable morphological features, and we conclude that our rigorous analyses are more scientifically sound.
They require rigorous definition of clinical variables (including ALI), consideration of confounding and causal pathway variables, careful attention to avoid biases introduced by the selection of the study population and controls, and biases introduced by underlying population architecture [ 9].
Discussion PCAS is frequent after CA. Its management requires a rigorous control of many variables.
The explanatory trial seeks to maximize the internal validity by assuring rigorous control of all variables other than the intervention.
Sample size determinations are highly sensitive to changes in design assumptions, which behoves sponsors to be rigorous when estimating these variables.
When subjected to the more rigorous multivariate analysis, most variables – including age – fell out of statistical significance (Table 2), a phenomenon seen in many other geriatric studies.
Whereas the explanatory trial seeks to maximize the internal validity by assuring rigorous control of all variables other than the intervention, the pragmatic trial seeks to maximize external validity to ensure that the results can be generalized.
ALI represents a complex syndrome with different possible causes and origins, but also involves patients with complex conditions: 'standard' care has to be defined in detail in such situations, and rigorous control of physiological variables as well as therapeutic modalities is of the outmost importance [ 9].
Several models were developed concerning various combinations of weather variables and through rigorous analysis it was identified that only the rain variable has noticeable effect on daily ridership.
