With RP (n = 25)

Without RP (n = 51)

P value

Clinical stage III a III b

9 (36%)

16 (64%)

17 (33%)

34 (67%)

Univariate 0.453 0.564

Multivariate 0.082 0.571

Site of the tumor Upper lobe Lower lobe Central tumor Peripheral tumor

10 (40%)

15 (60%)

18 (72%)

7 (23%)

20 (39%)

31 (61%)

43 (84%)

8 (16%)

0.341 0.876 0.435 0.657

0.123 0.342 0.521 0.645

Histopathology Squamus cell carcinoma Adenocarcinoma Large cell

13 (52%)

5 (20%)

7 (28%)

23 (45%)

10 (19%)

18 (36%)

0.451 0.234 0.561

0.473 0.07 0.987