Figure 1

Theoretical example of case–control sample, nested in a cohort with known size and prevalence of the disease. (A = true positive, B = false positive, C = false negative, D = true negative, N = number of patients).
Theoretical example of case–control sample, nested in a cohort with known size and prevalence of the disease. (A = true positive, B = false positive, C = false negative, D = true negative, N = number of patients).