After a preliminary demographic census of the study areas a clinical and parasitological cross-section survey was performed to evaluate malaria prevalence.
A baseline census of the study population was carried-out from January to March 2003, followed by a second census one year later.
To summarize, a door-to-door census of the study region was carried out based on maps from the Australian Bureau of Statistics.
A census of the studied communities enabling mortality rate ascertainment was only available in Porto Alegre [ 8].
The physical dimensions (radius, axis, and wall height), the presence of window and separate kitchen in the study homes were extracted from the 1999 census data of the study setting.
For the Korean population, however, the average might be slightly skewed, since some Koreans, at least, count their age from conception and base it on the lunar year, factors that may not have been accounted for in census figures, one of the study's authors said.
Similarly, because of significant effects of the interaction between diversity and density on survival from first census to termination of the study (Table 2, Figure 3) we performed separate tests for effects of diversity and relatedness on survival in high and low density.
The boundaries for the 1976 1996 censuses are consistent, but there are small changes for the 1971 and 2001 Censuses, covering either end of the study period.
Since there was no census at the end of the study, loss to follow-up after the 2000 census could not be determined, i.e. all 7,854 individuals linked to the 2000 census but not to a succeeding death or emigration record are assumed to have survived.
The census undertaken in part of the study population area indicates that about half those with chronic illness will request help from the home based care team.
