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

Table 2 Characteristics of patients with and without recurrence of lung squamous cell carcinoma

	Patients with recurrence of LSCC		Patients without recurrence of LSCC		P value
	n	%	n	%
Age (yr)
< 60	15	30.6	8	40.0	0.72
60-69	27	55.1	9	45.0
≥ 70	7	14.3	3	15.0
Gender
Male	47	95.9	20	100.0	0.359
Female	2	4.1	0	0.0
Tumor location
Upper lobe	35	71.5	10	50.0	0.193
Middle lobe	0	0.0	1	5.0
Lower lobe	13	26.5	8	40.0
Main bronchus	1	2.0	1	5.0
Lateral origin
Left	25	51.1	6	30.0	0.111
Right	24	48.9	14	70.0
Tumor localization
Central	43	87.8	14	70.0	0.08
Peripheral	6	12.2	6	30.0
Histology
KSCC	10	20.4	8	40.0	0.193
NKSCC	39	79.6	12	60.0
Grade
G1	8	16.3	3	15.0	0.040
G2	25	51.0	16	80.0
G3	16	32.7	1	5.0
T stage
T1b	5	10.2	2	10.0	0.559
T2a	24	48.9	6	30.0
T2b	4	8.2	2	10.0
T3a	16	32.7	10	50.0
N stage
N0	4	8.2	6	30.0	0.05
N1	30	61.2	8	40.0
N2	15	30.6	6	30.0
Stage
IIb	25	51.0	12	60.0	0.497
IIIa	24	49.0	8	40.0
Type of surgery
Lobectomy	19	38.8	10	50.0	0.618
Pneumonectomy	30	61.2	10	50.0

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