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Table 4 Percentage of simulated data sets where SRR was estimated as 0 (% ρ=0 ) and the bias of the corresponding SCR estimates taken as the percentage in relation to the true SCR

From: Sample size determination for estimating antibody seroconversion rate under stable malaria transmission intensity

Population Sample size SCR = 0.0036 SCR = 0.0108
% ρ=0 Bias (%) % ρ=0 Bias (%)
Africa 250 28.6 −25.7 16.0 −26.1
  500 21.9 −25.3 8.4 −26.6
  1,000 13.1 −25.6 2.0 −25.6
  2,500 3.7 −25.2 0.1 −26.4
  5,000 0.6 −24.4 0.0 N/A
  10,000 <0.1 −22.4 0.0 N/A
Elsewhere 250 27.0 −29.6 14.6 −30.5
  500 20.1 −29.4 6.1 −30.2
  1,000 11.2 −29.2 1.5 −30.7
  2,500 3.0 −28.6 <0.1 −32.2
  5,000 0.4 −28.8 0.0 N/A
  10,000 0.0 N/A 0.0 N/A
  1. Bias was defined as the difference between the mean of the corresponding estimates and the true value of SCR. The true SRR that generated the data sets was fixed at 0.017.