cluster sampling


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Related to cluster sampling: Systematic sampling, Convenience Sampling

cluster sampling

[′kləs·tər ‚sam·pliŋ]
(statistics)
A random sampling plan in which the population is subdivided into groups called clusters so that there is small variability within clusters and large variability between clusters.
References in periodicals archive ?
Bootstrap confidence intervals for adaptive cluster sampling.
The design effect for cluster sampling depends on the cluster sizes and the strength of the correlation within the clusters, hence the need for estimates of ICC values.
It is contrary to the conventional cluster sampling where sample size 'n' is fixed in advance and the rare event is counted after attaining the sample size 'n', then the disease burden 'P' is estimated as m/n where m is the number of events in the study population.
Cluster sampling is often used for geographic data such as real estate where clusters are naturally occurring.
Prevalence of asymptomatic disease was examined by random cluster sampling of serum samples from 12 sites (494 serum samples) in a region presumed to be non-HVL-endemic (i.
The two-stage cluster sampling surveys among reproductive-aged women, 15 to 45 years old, were conducted between September 2006 and January 2007 in the Shan, Mon, Karen, and Karenni communities in eastern Myanmar.
Systematic random sampling and single stage cluster sampling are the most feasible or logistical sampling designs, according to Mendenhall and other (1971); we evaluated these 2 designs with and without stratification.
A fixed cluster sampling plan was used with two pre-selection criteria: (1) individuals must be at least 18 years of age and (2) individuals must have daily access to the Internet either from home computer, business computer or both.
In September 2009, we surveyed Old Town residents to estimate the infection rate and identify risk factors using stratified, 1-stage cluster sampling to randomly select 911 (15%) households within 1 km of the residence of the index case-patient.

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