Table 1.

Patient Characteristics

Variable	Total	Surgical Group	Chemoradiotherapy Group	P
Gender				1.0
Male	113	57	56
Female	25	12	13
Age (years)				0.726
≥60	53	28	25
<60	85	41	44
KPS				0.399
≥90	124	60	64
<90	14	9	5
PCI				0.336
Yes	69	35	34
No	69	38	31
T-stage				0.894
T1	58	30	28
T2	51	25	26
T3	9	3	6
T4	20	11	9
N-stage				0.699
N0	58	30	28
N1	33	17	16
N2	47	22	25

Abbreviations: KPS, Karnofsky performance status; PCI, prophylactic cranial irradiation; HR, hazard ratio; CI, confidence interval.