Figure 1

The effect of the number of clusters and number of individuals per cluster on the 95% CI for a mortality rate of 1/10 000/day (N = 3600 individuals). Note: The ICC can be used to calculate Deff for different numbers of individuals per cluster (m) using the following formula: ICC = (Deff -1)/(m - 1).

Working Group for Mortality Estimation in Emergencies Emerging Themes in Epidemiology 2007 4:9 doi:10.1186/1742-7622-4-9
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Figure 1.