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Prevalence

For help go to SISA.

Exp. Proportion:

N of Clusters:

Cases per Cluster:

Design Effect:

Width of final CI:

Percentage in CI:

%




This procedure is to calculate
the sample size required for
estimating a prevalence,
incidence or other binomial
or proportion like estimator.
It can be used for simple
random designs but also to
estimate the sample size
required for a two stage
cluster design.
More....