TABLE 1.

REASONS FOR NATIONAL EMPHYSEMA TREATMENT TRIAL MAIN STUDY INELIGIBILITY OR FAILURE TO REPEAT CARDIOVASCULAR SUBSTUDY RIGHT HEART CATHETERIZATION POST-TREATMENT

No. of Ineligible Patients (n = 53*)	No. of Patients with No Repeat RHC (n = 53*)
PFT/CT criteria not met, 19	Died, 7
Cardiac abnormalities, 15	Missed repeat RHC, 46 (5 missed entire visit, 41 completed part of the visit)
Refused testing, 6	Refused, 37
Failed physician evaluation, 11	Illness, 9
Pulmonary nodules, 2	Unable/unwilling to travel, 5
Failed BMI criteria, 2	Test ordered, but not done, 2
Too high prednisone dose, 2	Too tired, 1
Died before randomization, 2	Away from area, 1
Current disease, 3	Waveform unreadable, 1
Other, 6	No information, 3

Definition of abbreviations: BMI = body mass index; CT = chest computed tomography; PFT = pulmonary function testing; RHC = right heart catheterization.

^*Patients could have had more than one reason for ineligibility or failure to repeat RHC.

Two patients were missing baseline RHC data so that change from baseline to 6 months could not be calculated.