Sentence examples for by the sampling frame from inspiring English sources
This study is limited by the sampling frame, which included only seropositive men in the San Francisco area, most of whom had been diagnosed many years before.
If a Trust declined to participate then the next Trust in that stratum was approached until the quota defined by the sampling frame was fulfilled.
As intended by the sampling frame, both groups had similarly high levels of educational attainment (> 55% college graduate or post-graduate degrees) and household income (> 34% with incomes > $100,000).
The study's exploratory rather than in-depth nature, the non-random sample selected and the use of self-reported data represent other limitations, as did the potential bias introduced by the sampling frame.
39 Although the differences in the observed rates may be partially explained by the sampling frame, response rates, or the small number of eligible respondents who received the HPV vaccine question series in the national surveys, the estimates of HPV vaccine uptake are noticeably different from the current study.
While a higher proportion of electronic respondents were male and living in an urban area (information provided by the sampling frame), these differences were not statistically significant – most probably due to a lack of power.
The sampling is stratified by province (the sampling frame) and then implicitly stratified by urban-rural and geographical location, as well as demographic structure.
The CTVB was assigned to each individual by matching the sampling frame to the local authority council tax register.
Household selection in each cluster was randomly taken by using the sampling frame of every 10th household with the nearest household from the village health service (Pustu) as the starting point.
This system allows dual live view of the specimen: through the microscope's optics or on the video image overlaid by the sampling frames.
The national sample was selected by random digit dialing, with the sampling frame generated by a random sample from a proprietary database of working residential telephone exchanges in the continental United States.
