Fig. 1

Examples of different visualizations. 1a. Survival curve comparing two cohorts. Reprinted from Dahm-Kähler et al. [15], with permission from Elsevier. 1b. Lexis diagram, presenting data of four hypothetical patients, each patient represented by a lifeline starting on diagnosis date (y = 0) and continuing upwards until patient’s death, or extending to right border if patient is alive at data extraction. The lifelines’ 45-degree angle reflects equal time passing along both time axes in the Lexis diagram. Dots represent time of death, and crosses show other events occurring between diagnosis and death