Table 3. Five-year OS and CSS for patients in different subgroups.

Subgroups	Number	5-year OS					5-year CSS
		pN1-NR <0.3	pN1-NR ≥0.3	pN2-NR <0.3	pN2-NR ≥0.3		pN1-NR <0.3	pN1-NR ≥0.3	pN2-NR <0.3	pN2-NR ≥0.3
T1/T2	9,934	48.9	36.8	45.5	30.2		58.9	45.0	54.4	37.9
T3/T4	2,236	38.4	26.7	32.1	21.1		46.6	35.4	39.4	25.3
Adenocarcinoma	7,181	48.7	37.0	45.1	29.2		57.1	44.5	53.3	36.3
Squamous cell carcinoma	3,757	45.3	31.4	38.1	25.9		57.6	40.9	47.7	33.1
Lobectomy/bilobectomy	10,240	48.4	35.4	45.0	29.2		57.9	44.0	53.6	36.7
Pneumonectomy	1,930	41.3	33.2	30.4	23.5		52.2	39.7	39.7	28.4
Age <65 years	5,847	53.9	40.9	48.1	34.0		61.1	47.1	56.2	40.1
Age ≥65 years	6,323	40.9	29.3	37.6	23.3		52.8	39.5	46.9	31.3

OS, overall survival, CSS, cause-specific survival; NR, node ratio.