Sentence examples for survey clusters from inspiring English sources

The survey clusters (see supplemental information file) and malaria prevalence maps were prepared (figure 2, 3 and 4 respectively).

Geographic parsing of the rates of uptake of recommended control measures between survey clusters demonstrated substantial heterogeneity, with penetration generally less successful in less developed and accessible regions.

The clinical relevance of these largely asymptomatic parasitemias in adults is indicated by the association within survey clusters between P. falciparum prevalence and under-5 mortality (U5MR).

Using ArcGIS (v9.3, ESRI, Redlands, CA, USA), individual maps of parasite rates and rates of uptake of control measures were generated using inverse-distance weighting to smooth surfaces across unmeasured locations between survey clusters.

Overall, the point prevalence of malaria parasitemia was over 33% in adults, and parasite prevalence within survey clusters was associated with traditional determinants of malaria endemicity and with increased under-5 mortality.

Nine randomly selected administrative units ('Boma') constituted the survey clusters, with a corresponding running cumulative population size for each Boma.

Figure two shows the survey cluster locations.

Some surveys also use GPS to collect geographical coordinates for each survey cluster.

Robust SEs were used to adjust for survey clustering at the area level.

Figure 4 presents the prevalence of podoconiosis by survey cluster and shows marked geographical variation, with prevalence ranging from 0%to54.6%6%.

Our results are adjusted for survey clustering, sample weights and stratification, and we calculated robust standard errors to address heteroskedasticity.