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Table 2 True prevalence results (mean and quantile of the 95% credible interval (Q) of the toy example with 24% and 5% apparent prevalence, 500 sample size, 120/25 positive tests with consistent assumptions on sensitivity (80%) and specificity (90%). Speybroek et al. 2012 Model 1 assumes fixed values for Se and Sp, while Model 2 assumes SeUnif(0.7,0.9) and SpUnif(0.85,0.95). For the |tPRiors| example, SeBeta(195.76,48.94) and SpBeta(135.86,15.1), while for Setup A: πtBeta(1,1) and Setup B: πtBeta(1.3,1.3)

From: |tPRiors |: a tool for prior elicitation and obtaining posterior distributions of true disease prevalence

  Speybroek et al. 2012 tPRiors
  Model 1 Model 2 Setup A. Setup B.
Measure 24% 5% 24% 5% 24% 5% 24% 5%
Mean 0.2015 0.0048 0.2008 0.0096 0.2004 0.0103 0.2026 0.0127
2.5% Q 0.1493 0.0001 0.1133 0.0003 0.1266 0.0003 0.1203 0.0008
97.5% Q 0.2577 0.0173 0.2927 0.0336 0.2705 0.0327 0.2764 0.0367