Representativeness: Were the study samples shown to be representative of the study population?
A minimum sample size of 109, representing 20% of study population was considered an adequate representative of the study population.
The latter were used to calculate a vertical variogram, representative of the study site.
Some studies, however, do not include the use of air quality models, considering the monitoring network as spatially representative of the study domain (e.g. Lisbon Region, Riga, Malta).
This approach enabled us to replicate the method in a sufficiently large number of cases for the results obtained to be considered reliable and representative of the study area.
Verbal consent is a standard procedure used by the HVRF based on extensive experience conducting telephone surveys of this type; requiring written consent produces low response rates and survey samples unlikely to be representative of the study population.
Although the data are representative of the study area it is likely that frequencies of newborn care behaviours vary between different countries in sub-Saharan Africa, and within Tanzania.
Concerning possible selection bias, the sample was representative of the study population.
We consider that our sample size is representative of the study population.
This indicates that the study participants were representative of the study field.
It should be noted that those patients are not fully representative of the study population.
