Fig. 4
From: Statistical biases due to anonymization evaluated in an open clinical dataset from COVID-19 patients
Comparison of patient status at end of acute phase before and after anonymization (anonymized dataset = PUF). The proportions are given in percentage. Note: The percentages in the PUF may be larger if the number of censored cases is unbalanced. (a) Distribution for the original dataset containing n = 4,562 and resulting anonymized dataset (n = 3,904). (b) Case fatality rates (patient status dead) are computed for the Cross-Sectoral Platform (SUEP) and High- Resolution Platform (HAP) cohorts over different sizes of original dataset. In the plot, the size of the original dataset is adjusted by the number of HAP and SUEP patients. To note, the Population-based Platform (POP) has recruited patients that survived SARS-CoV-2 infection only.
