Assumed life expectancies were:
no cancer = 25 years;
local cancer-surgery = 6 years;
regional cancer-surgery = 2 years;
distant cancer-surgery = 1 year;
local cancer-no surgery = 2.5 years;
regional cancer-no surgery = 2 years;
distant cancer-no surgery = 1 year;
metastatic cancer-no surgery = 1 year.
The true-positive rate, true-negative rate, probability of procedural death and probability of nonfatal complications for each of the following tests in patients with central lesions were:
sputa, 40%, 95%, 0% and 0%;
FNA, 80%, 95%, 0.05%, 15%;
bronchoscopy, 75%, 95%, 0.1%, 15%;
thoracoscopy, 100%, 100%, 0.5%, 15%.
In patients with peripheral lesions the respective rates were:
Sputa, 20%, 95%, 0%, 0%;
FNA, 85%, 95%, 0.05%, 15%;
bronchoscopy, 30%, 95%, 0.1%, 15%;
thoracoscopy, 100%, 100%, 0.5%, 15%.