Individuals qualify to become Health and Demographic Surveillance System (HDSS) residents through baseline enumeration, in-migration or birth [ 24].
People staying at the target households for a period of less than six months, temporary residents (people who have permanent residence elsewhere), a resident who passes away after the enumeration but prior to examination, and an eligible resident who cannot be contacted after five physical attempts by the social worker are excluded from the study.
Analyses are restricted to those permanently resident at the place of enumeration (98% of the ONS LS sample).
It is also as much a count of dwellings, of "flats and houses", commuting vehicles, caravans and beds in halls of residents – as it is an enumeration of people.
This sampling frame excluded 17 wealthy enumeration areas, where residents typically make private security arrangements and do not participate in public health initiatives for the popular neighborhoods.
Within each school district, 200 residents were randomly chosen using the Basic Resident Register (an enumeration of every residence in Japan managed by the national government and prefecture) as the sampling frame.
On average, enumeration districts contain 450 residents or 200 households.
The enumeration group made contact with residents and tried to confirm whether they would participate in this study.
Participants Residents in a random sample of census enumeration areas across both countries: 75 intervention and 75 control clusters (about 140 households each) were randomized and analyzed (60 clusters in Nicaragua and 90 in Mexico), including 85 182 residents in 18 838 households.
A structural bulwark will ensure that only those women who are resident in intervention villages at the time of enumeration (along with those who marry in) receive the programme of services.
Participating villages were the largest settlements in randomly selected census enumeration areas (each containing approximately 1000 residents) within a 25 km radius of the district hospitals of Dedza and Mangochi (Figure 1).
