The phrase "a preferred control" is correct and usable in written English.
It can be used in contexts where you are discussing options or choices, indicating that one control is favored over others.
Example: "In the user interface design, we have identified a preferred control that enhances user experience."
Alternatives: "a favored option" or "a chosen control".
In terms of designing an intervention, the most preferred control group option was the opportunity to attend the same course at a later date.
The Centers for Disease Control and Prevention CDCC) established ring vaccination (selective epidemiological control [ 5]), a strategy in which contacts of cases are identified and vaccinated, as the preferred control measure in the event of a smallpox outbreak (interim plan).
In recent years, low impact development (LID), or a broader term, green infrastructure (GI), has gained worldwide recognition as the preferred control practices to alleviate the effects of urban stormwater runoff.
Comments by the participants gave strong indications that view to the outside influenced the choice of preferred control strategy.
For most infectious diseases vaccination is the preferred control measure.
Clearly, healthy children without CF would have been the preferred control group for these studies.
We selected TF2B as the preferred control gene and have verified that TF2B qPCR counts do not change in freshly harvested separated human leukocytes under a variety of conditions, when RNA is processed as described here.
The study specifically found that all females tested preferred control males (who had no ancestral vinclozolin exposure) whereas males from both the control and ancestrally treated groups exhibited no particular preference for female type.
As already noted, depression or mental health education websites are not the preferred control condition for studies of interventions for mental disorders as there is evidence that such information may improve mental health.
