Table 1:

Baseline patient, tumor, and treatment characteristics of the study cohort (n = 104).

Variable	N (%) or Median (IQR)
Age, median (IQR) (years)	64.0 (56.5–73.0)
Sex
Female	51 (49.0)
Male	53 (51.0)
Smoking
Never	15 (14.4)
Former/Current	89 (85.6)
FEV1 (% predicted)*	87.0 (77.0–101.0)
Differentiation
Poor	43 (41.3)
Well/Moderate	61 (58.7)
Zubrod
0	57 (54.8)
1	47 (45.2)
Extent of resection
Lobectomy/Bilobectomy	100 (96.2)
Pneumonectomy	4 (3.8)
Pathologic Margin
R0	100 (96.2)
R1	4 (3.8)
Pathologic Stage
I	62 (59.6)
II	24 (23.1)
III	18 (17.3)
Adjuvant therapy
Chemotherapy	23 (22.1)
Radiotherapy	13 (12.5)

FEV1: forced expiratory volume in one second; IQR: interquartile range

^*available in 103/104 (99.0)