Overestimation in retrospective analysis
Next, the bias was further studied in a retrospective analysis of the CT studies of 109 patients with RT–PCR-confirmed COVID-19 from HOSP-TM and EXMED. As part of the standard clinical practice, all radiological reports mentioned the total percentage of COVID-19 lung involvement.Similar to the previous experiment, a visible trend emerged in both hospitals (Fig. Retrospective overestimation analysis. (