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[Preprint]. 2021 Oct 5:2021.02.03.21251011. Originally published 2021 Feb 5. [Version 2] doi: 10.1101/2021.02.03.21251011

Figure 3. Uncertainty in estimated SARS-CoV-2 seroprevalence obtained using different sample allocation strategies.

Figure 3.

The uncertainty (W, the width of the 95th percentile interval for 10000 estimated seroprevalence values) versus mean estimated seroprevalence for different values of n (the total number of individuals sampled) when individuals are sampled using (1) in the left panel, the optimal sample allocation according to Equation 2 in the Supplementary Material (Sop); (2), in the center panel, the sampling distribution of participants in the Somerville seroprevalence survey (Ssite); (3) the sampling distribution at the proposed alternative study site (Salt).