Sample size calculation

Calculating sample size under required precision: for prevalence estimates

The tool calculates sample sizes, i.e., the number of households required to estimate prevalence of asset ownership. Please enter values for all the necessary parameters if differ from the default value shown and follow instructions on the screen to estimate the number of households need to be approached in a household survey. 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) :
Required coefficient of variation (cv) :
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)
Total number of households to be approached