Figure 2From: Comparison of approaches to estimate confidence intervals of post-test probabilities of diagnostic test results in a nested case-control study Flow-chart of the sampling process of the nested case–control samples. This process was repeated for a deep venous thrombosis prevalence in the source population of 0.05, 0.1 and 0.2. “n” in the nested case–control sample represents the average sample (cases plus controls) size across 1000 samples.Back to article page