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Sample size Detect disease (random sampling & perfect diagnostic) Estimate mean (Normal distribution) Estimate mean (Poisson distribution) Estimate proportion (random sampling & perfect diagnostic) Diferences between proportions     Sampling method Simple random sampling Sistematic sampling Estimate population size Adjust loss of participants     Diagnostic Agreement (Kappa) Sensitivity of qPCR with pools     Disease measures Maximum possible prevalence (all negative samples)     Basic statistics

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