2.

Survival analysis of 115 patients with non-small cell lung cancer

Parameter	n	Deaths	Survival time (month)			Log-rank test
			Mean (95% CI)	Median (95% CI)		X2	P
CI: confidence interval.
All pateints	115	85	35.27(29.91-40.63)	23.00(17.01-28.91)		5.132	0.023
cyclin D1 low expression	60	39	39.86 (32.50-47.23)	29.00(12.07-45.93)
cyclin D1 high expression	55	46	29.02 (22.19-35.869)	20.00 (15.97-24.05)
Stage Ⅰ, Ⅱ	63	39	44.75 (36.96-52.54)	40.00 (23.27-56.73)		6.863	0.009
cyclin D1 low expression	31	15	53.45 (43.90-63.00)	72.00 (45.84-98.16)
cyclin D1 high expression	32	24	34.39 (23.94-44.84)	23.00 (1770-28.30)
Stage Ⅲ, Ⅳ	52	46	22.27 (17.67-26.88)	17.00 (13.47-20.53)		0.091	0.763
cyclin D1 low expression	29	24	22.95 (16.08-29.82)	16.00(9.41-22.59)
cyclin D1 high expression	23	22	21.52(15.31-27.73)	19.00 (15.48-22.52)