Even if representativeness were achieved, polls properly mirror public opinion only when they ask about the concerns that are actually on people's minds, concerns about which held views are firm and compelled to find voice.
Geographic representativeness was achieved by an unbiased selection of the specialized care centers throughout the whole country, and a random enrollment of investigators in each selected center.
High representativeness has been achieved by means of the sampling method and participation rate.
It has been suggested that greater heterogeneity in snowball samples, and improved representativeness can be achieved by increasing sample sizes, using quotas for key demographic variables, use of multiple starting points for snowball initiation and using a small number of links within each chain [ 13, 27].
While targeted recruitment will increase the numbers of participants in particular subgroups and allow for more detailed study of these individuals, true representativeness is unlikely to be achieved in any voluntary study.
Spiked materials could be a suitable alternative as long as sufficient representativeness, equivalence, homogeneity and stability are achieved for the candidate CRM.
Especially good representativeness of the Estonian PD population was achieved for the patient groups with mild and moderate disease.
For hospital benchmarking and/or public reporting NOIS-SSI was not good enough, because when hospitals are not required to submit all procedures, full representativeness for such variables as hospital size and type may not be achieved.
The NRSMPA is underpinned by the principles of comprehensiveness, adequacy, and representativeness (CAR, http://www.environment.gov.au/coasts/mpa/nrsmpa/index.html), but there is uncertainty about whether this will be achieved in practice given the conflicting political and socioeconomic pressures.
While the sample size may limit representativeness of findings to other healthcare settings, we included a range of nurses working in different environments and data saturation was achieved.
