FIGURE 1.
Frequency of lung transplant in patients with a primary diagnosis at time of transplant of coal workers’ pneumoconiosis or pneumoconiosis unspecified, defined as a patient listed with a free-text diagnosis of pneumoconiosis without additional specification (top frame); frequency of lung transplant waitlist addition for patients with a diagnosis of coal workers’ pneumoconiosis or pneumoconiosis unspecified, as specified at time of waitlist addition (bottom frame), United States, January 1994-June 2017*