Predictors of disease recurrence after radical resection and adjuvant chemotherapy in patients with stage IIb-IIIa squamous cell lung cancer: A retrospective analysis

Table 1 Baseline patient clinical, pathological and treatment information

Clinical and pathological data	Patients
	n	%
Age (yr)
< 60	23	33.3
60-69	36	52.2
≥ 70	10	14.5
Gender
Male	67	97.1
Female	2	2.9
Tumor location
Upper lobe	45	65.2
Middle lobe	1	1.5
Lower lobe	21	30.4
Main bronchus	2	2.9
Lateral origin
Left	31	44.9
Right	38	55.1
Tumor localization
Central	57	82.6
Peripheral	12	17.4
Histology
KSCC	18	26.1
NKSCC	51	74.9
Grade
G1	11	15.9
G2	41	59.4
G3	17	24.7
T stage
T1b	7	10.1
T2a	30	43.5
T2b	6	8.7
T3a	26	37.7
N stage
N0	10	14.5
N1	38	55.1
N2	31	30.4
Stage
IIb	37	53.6
IIIa	32	46.4
Type of surgery
Lobectomy	29	42.0
Pneumonectomy	40	58.0

KSCC: Keratinizing squamous cell carcinoma; NKSCC: Nonkeratinizing squamous cell carcinoma.