Clinical practice guidelines are reproducible if two groups of experts, pre
sented with the same evidence and methods, derive similar recommendations..
Reproducibility is an essential attribute in justifying the use of clinica
l practice guidelines to guide and monitor physicians' practices. This arti
cle will compare guidelines for the management of advanced nonsmall-cell lu
ng cancer developed by the National Comprehensive Cancer Network (NCCN) wit
h guidelines derived by the American Society of Clinical Oncology (ASCO). T
his comparison aims to determine whether the two guidelines are similar or
whether there are major differences that pose significant problems for clin
icians attempting to manage patients according to one oncology standard.