SPSS16.0 statistical software was used for statistical
analysis. Comparison of tumor marker level in groups
was conducted using rank sum test. Comparison of
tumor marker positive rate in pathological types was
conducted using χ2
(ROC) curves were generated and the area under the
curve (AUC) was calculated to compare the diagnostic
accuracy of tested markers for predicting pathological
type of lung cancer.
test. Receiver operator characteristic