The phrase "participant population" is correct and usable in written English.
You can use it in the context of a research study that is using a sample of participants to make inferences about a broader population. For example, "The results of this study can be generalized to the larger participant population."
The participation rate in the MDCS was about 40% of the potential participant population.
Eligible studies clearly defined their participant population.
Our goal was to divide web pages into "common-sense" categories which would feel natural to our participant population.
Fourth, I argue that the use of online participant population can be improved through better screening, to parallel the screening we use with student participant groups.
While these pathology collections were relatively simple, contemporary biobanks exhibit considerable variation in scope, purpose, type of material collected, and participant population.
Participants in the remaining trials were untrained [65], physically active [51] or endurance cyclists [33], where the participant population was defined.
The participant population was limited to Iranian English language teachers in English language institutes who assign, assess, and grade writing tasks and give WCF.
Current evidence is inadequate to determine the influence of other variables (e.g. participant population, mode of dehydration) on the effect of fluid intake.
Previous work has used a number of techniques to render text unreadable, e.g., on a web page, including "Greeking" text (Tullis, 1998) or converting it into a language that our participant population is unable to read, such as Finnish.
For the training outcome, the participant population was the same for all but one study, which observed family and caregivers of users instead of opioid users themselves (Williams et al. 2014).
Means across the 22 participants for each stimulus were also calculated to characterize the behavior of the participant population.
