Author: Emma Spielfogel
About this viz: This funnel plot shows how an analytic population was identified. The plot starts with the total number of eligible participants, which is the total California Teachers Study (CTS) population. Each subsequent level shows how many participants remained after a particular selection criteria was applied. The final step in this funnel chart shows how many CTS participants have Centers for Medicare and Medicaid (CMS) linkage data and also have ever been diagnosed with cancer. This visual also highlights the distribution of cancer diagnoses among the final analytic population.
The code used to create this particular funnel plot can be leveraged to visualize cohort selection in other studies.