Table 1

Clinical characteristics of patients undergoing surgical resection for non–small cell lung cancer, by surgical procedure

Characteristic	Group; no (%)^*		p value^†
Characteristic	Lobectomy n = 352	Wedge resection n = 71	p value^†
Age mean, yr	64.7	64.9	0.78
Sex			0.48
Male	165 (46.9)	30 (42.3)
Female	187 (53.1)	41 (57.7)
Smoker	323 (96.1)	65 (98.5)	0.48
Comorbidities
Coronary artery disease	87 (24.9)	19 (26.8)	0.74
COPD	101 (28.9)	33 (46.5)	0.004
Psychiatric	33 (9.4)	6 (8.4)	0.80
Type II diabetes	34 (9.7)	6 (8.5)	0.74
Chemotherapy
Adjuvant	57 (16.9)	10 (14.9)	0.70
Neoadjuvant	7 (2.1)	1 (1.5)	> 0.99
Tumour stage			0.007
T1a	96 (27.3)	27 (38.0)
T1b	86 (24.4)	16 (22.5)
T2a	117 (33.2)	18 (25.4)
T2b	23 (6.5)	2 (2.8)
T3	28 (8.0)	4 (5.6)
T4	2 (0.6)	4 (5.6)
Cancer stage; AJCC seventh ed.			0.020
IA	146 (41.5)	35 (49.3)
IB	68 (19.3)	16 (22.5)
IIA	81 (23.0)	4 (5.6)
IIB	29 (8.2)	5 (7.0)
IIIA	26 (7.4)	11 (15.5)
IIIB	1 (0.3)	0
IV	1 (0.3)	0

AJCC = American Joint Committee in Cancer; COPD = chronic obstructive pulmonary disease.
↵* Unless otherwise indicated.
↵† All tests are χ² tests (Pearson or Fisher exact, as appropriate) with the exception of age, which was based on a t test.