Herd (Cluster) Level Sample Size Estimation
Enter Unit-level design prevalence (Inputs in percent decimal)
Enter Margin of error or Cluster-level prevalence (Inputs in percent decimal)
Enter Test Sensitivity (Inputs in percent decimal. eg: 90%=0.9)
Enter Target Cluster Sensitivity (Inputs in percent decimal eg: 90%=0.9)
Enter Target System Sensitivity [Confidence] (Inputs in percent decimal eg: 90%=0.9)
0.80
0.90
0.95
0.99
Result:
Estimated Clusters (Villages / herds) to Sample
Maximum Number of Sample
Numbers of units to be sampled for different cluster sizes for [Target cluster Sensitivity] SeH =
Cluster Size
Number of units to sample
Cluster Size
Number of units to sample
10
200
20
500
30
1000
40
5000
50
10000
100
Back to Index
CLICK HERE FOR FORMULA