> -wrap-foot> *selectionlection: Study units selected prospectively, or retrospectively from existing samples; Consecutive, random or convenience sampling method.
Samples of different study designs could have considerably different inclusion criteria, sample selection, and study protocols.
Nevertheless, without baseline data on foreign language teachers (Australian Language & Literacy Council 1996; Liddicoat et al. 2007), and without a probability method of sample selection, the study provides important insights, but it is with caution that generalisations are made about the wider population (Traugott et al. 2004).
Finally, four papers were excluded because of considerable methodological limitations [ 32- 34] concerning data analysis, sample selection or study design.
43 Accreditation agency stakeholders will be purposively drawn from the lists used to guide the interview sample selection for study one.
The specificity of cytological markers (CEA, Ber-EP4, calretinin) appears to be rather heterogeneous, potentially, because of differences in study quality, marker handling, type of antibody, type of effusion, and patient and sample selection among studies.
Such variations could be associated with several local factors, including differences in iodine intake among populations, differences in cut-off values used for thyrotropin and FT4 levels and strategies of sample selection among studies.
The validation study was conducted via the web, which raises some potential bias in the sample selection for the study.
Exploiting these differences in natural pre-conditions, we follow Foudi and Erdlenbruch (2012) applying a sample selection approach to study the risk-decreasing properties of irrigation under joint estimation of production and production risk.
The specific criterion for sample selection in this study was that the patients presented an open bite of at least 1 mm, which is similar to other investigations [6 8, 13, 31].
