If the selected control-respondent refused to participate or did not meet the inclusion criteria, the geographically closest eligible person was then selected from the list.
13 In brief, we stratified the 39 eligible communities, geographically defined according to municipal boundaries, by population size (three strata) and geographical location (four strata).
All those aged 65 years and over living in geographically defined catchment areas were eligible.
All eligible residents within geographically defined areas within each nursing home were invited to participate.
All boys and girls entering the elementary school from 1991 to 2000 and living in the geographically defined areas of East Germany were eligible to participate.
We are expanding our screening area by area, and we are including all eligible residents of a geographically confined area within a limited time.
Sites under the oversight of the same parent agency were eligible only if they were in geographically distinct catchment areas, and could be assigned to different study arms without cross-contamination at any level.
In addition to the required authorizations, contracting of services between HMOs administering subsidized insurance and service providers is geographically fragmented creating further barriers by increasing travel times to eligible providers (Abadía and Oviedo 2009; Vargas et al. 2010).
We included studies that met the following criteria: · Eligible participants were those diagnosed with hypertension in a specified geographically defined community (for example, cities, districts, counties, villages, or work sites).
Second, geographically targeted direct mailings were conducted to more than 2,000 age-eligible health plan members who reside in census tracts in which minority individuals are over-represented (>= 40% racial/ethnic minorities, based on Census 2000 counts).
