Yet while Leicestershire police officer Harvey Watson, who is the vice-chair of the Police Association of Higher Education Liaison Officers, says students are a "very hard population to reach", he assures parents that there are many support networks for students, once they know where to go.
There is still no hard population information on anaconda numbers in the Peruvian Amazon, which makes it impossible to establish a baseline for the species.
The remote character of their working environment defines them as a hard to reach population group [4 6].
Senior leaders can be a hard to reach population for research purposes.
Data relating to the challenges of research with a hard to reach population are included in the data synthesis.
Senior leaders can be a hard to reach population for research purposes, due to the demands of their jobs.
Implementing a complex intervention with a hard to reach population through a factory in China, using a quasi-experimental design, is not easy.
The results of the study will provide crucial information on feasibility of delivering the intervention in a hard to reach population.
In addition, the heaviest drinkers are often socially marginalised and comprise a hard to reach population who are difficult to recruit and follow-up [ 15].
