In case cohort designs, it is often useful to select subcohort members using an exposure-based stratified random sampling in order to gain statistical efficiency [ 29].
Imagine if medicine could only innovate using techniques lawyers could understand.Complexity is often useful, but complexity for its own sake is needlessly dangerous.
When using a pipeline with multiple tools, it is often useful to be able to check the data produced by each tool to ensure that it is reasonable.
A published prayer book or other book of that nature is often useful for finding common blessings, if you choose to use one of these.
In those cases, some avuncular guidance is often useful.
The distinction between intermolecular and intramolecular processes is often useful.
It is often useful to return to these first principles to temper the emotional charge of public debate.
It's important to note that contrarian research is often useful in challenging and advancing our scientific understanding.
In his own words: "Most consequential choices involve shades of gray, and some fog is often useful in getting things done".
This "wing formula" is often useful to differentiate between species of such difficult groups as the New World flycatchers and the Old World warblers (Sylviidae).
Because of the complexities inherent in any discussion of ritual, it is often useful to make distinctions by means of typology.
