to: Index and Menu
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....