| .n.strata.less.than.max | R Documentation | 
Intended only to be called within stratify, not as a standalone function
.n.strata.less.than.max(n_strata, data_interest, variables, idvar)
n_strata | 
 integer, a number of strata in which to divide to cluster population  | 
data_interest | 
 data.frame, a data.frame object with the population of interest (rows are observations)  | 
variables | 
 character, provide a character vector of the names of stratifying variables (from population data frame)  | 
idvar | 
 character, provide a character vector of the name of the ID variable (from population data frame)  | 
The function returns a boolean value indicating whether the number of observations with non-missing variables of interests exceeds 1 plus the number of strata requested
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