Sentence examples for a proper control population from inspiring English sources

Randomized trials (RCT) are very difficult in this context for ethical and organizational reasons [ 15], and, observational studies have important limits due to the identification of a proper control population and to the type of intervention to be evaluated.

Therefore, a natural and important question is that whether a proper control only on the predator population can make the extinct prey species become permanent, and the prey-predator can coexist in a certain pattern.

The present study does not comply with all the recommendations for reporting cost-effectiveness in medicine [ 12] since we do not have a proper control group for our intensive care population, which is necessary for calculating the incremental cost-effectiveness ratio.

From a practical point of view, a proper control helps to manage and reasonably develop the population systems.

To find out, a proper control group is essential.

Select a proper control group of animals.

Thus, a proper control strategy is needed.

It is a major challenge in any non-medical trial to define a proper control group.