Sample size calculation

Calculating precision based on number of households in the host survey - for prevalence estimates

The tool estimates coefficient of variation (cv) if a set of EDGE questions or modules are to be appended to an existing household survey with a predefined number of households. Please enter values for all the parameters if differ from the default value shown and follow the instructions on the screen to obtain results of the calculation. Excel template


Household distribution

Entering the distribution of households by number of adults in the household

Number of adults in the household:
Distribution of households
1
%
2
%
3
%
4
%
5
%
Total
%

Other information

Entering remaining information

How many adults to be selected from each household :
Estimated ownership of prevalence :
Average number of households to be interviewed per cluster (or enumeration area) :
Average number of adult members in a household :
Intra-cluster homogeneity measurement (roh) :
Total number of households :
Estimated individual non-response rate :
Calculated result
Design effect due to intra-cluster correlation (deff)
Weighting effect due to weighting for unequal selection probability within household (1+L)
Required cv(y)