Table 2.

Univariate Cox analysis of clinical cases (n = 32) (endpoint: OS).

clinical features	HR (95%CI)	P
Age	2.302 (0.899–5.893)	0.082
Gender	0.986 (0.389–2.500)	0.976
AJCC stage	1.196 (0.677–2.111)	0.538
smoking index	1.329 (0.576–3.063)	0.504
pathological pattern	0.724 (0.322–1.627)	0.434
TMSB4X	1.762 (1.128–2.752)	0.013*

Note: HR: risk ratio; CI: confidence interval; Smoking index (SI)= Number of cigarettes smoked per day × number of years smoked.