Incorporating the Number of PLN into the AJCC Stage Could Better Predict the Survival for Patients with NSCLC: A Large Population-Based Study

Table 1

Non-small cell lung cancer (NSCLC) patient characteristics from SEER database.

Variables	Number	%
Age
<65	6158	38.9
≥65	9662	61.1
Race
White	13483	85.2
Black	1244	7.8
Others	1093	6.9
Sex
Female	7513	47.5
Male	8307	52.5
Histology
Adenocarcinoma	9587	60.6
Squamous	6233	39.4
T stage
T1	5563	35.2
T2	7910	50.0
T3	1047	6.6
T4	1300	8.2
pN stage
pN0	10039	63.5
pN1	3227	20.4
pN2	2505	15.8
pN3	49	0.3
nN stage
nN0	10304	65.1
nN1–3	3669	23.2
nN4-	1847	11.7