Cohort Description: Cohort & Activities Diagram

Target Populations and Response to the First, Second and Third Survey

* At the time of the First Survey, 6,350 technologists were deceased. At the time of the Second Survey, an additional 5,377 technologists were deceased, including 3,104 who completed the First Survey. At the time of the Third Survey, an additional 6,604 technologists were deceased (total deceased, N=18,331).

Includes 2,505 radiologic technologists found to be eligible and added to the cohort after the First Survey.

Responders to one or both of the previous surveys.