Subjects were randomly selected from the villagers using administrative lists of local authorities (Table 1).
Subjects were randomly selected from lists of employees and administrative lists of citizens obtained from local authorities (Table 1).
Our method assumes that the inaccuracies in the general practice administrative lists occur equally for each of the ethnic groups.
In the urban area inclusion of the intended subjects through administrative lists appeared to be more complicated.
Subjects were selected randomly from administrative lists of residents of communities or villages provided by local authorities and lists of employees of factories.
Based on the administrative lists, we calculated sampling weights for each stage of clusters sampled, and subsequently assigned a final sampling weight as the product of weights at each stage.
We selected 2067 patients who were admitted to ICUs after cardiac surgery in Regione Piemonte, Italy, in 2009 and analyzed all administrative data listing diagnosis and procedures according to ICD-9CM definitions.
Statistics Canada randomly selected the survey respondents from the administrative data lists provided by the provincial and territorial apprenticeship authorities.
Subjects were randomly selected using administrative name lists.
Next, subjects from these villages were randomly selected using administrative name-lists.
