Computes the Kish design effect and corresponding intra-cluster correlation
for a single cluster-sampled variable
Usage
deff(y, cluster)
Arguments
y
variable to analyze
cluster
a variable whose unique values indicate cluster membership. Any
type of variable is allowed.
Value
a vector with named elements n (total number of non-missing observations),
clusters (number of clusters after deleting missing data), rho
(intra-cluster correlation), and deff (design effect).