5.

Ⅲa-N2期手术患者PFS的影响因素分析

Influencing factor analysis of PFS of stage Ⅲa-N2 surgical patients

Factor		PFS (month)	95%CI	χ2	P
*: Have two cases lost in this factor analysis. #: Have nine cases lost in this factor analysis.
Maximum diameter of tumor*				5.338	0.021
	< 4 cm	23.1	18.77-27.37
	≥4 cm	12.2	5.72-18.62
Number of involved mediastinal lymph nodes#				0.775	0.379
	< 3	20.2	15.61-24.85
	≥3	16.0	7.55-24.46
Number of involved mediastinal lymph node stations#				0.184	0.668
	1	20.2	13.06-27.40
	≥2	16.5	6.57-26.43
Positive subcarinal lymph node#				0.001	0.971
	No	19.2	13.74-24.60
	Yes	21.3	13.70-28.96
Auxillary chemotherapy				5.047	0.025
	No	8.6	0.00-22.66
	Yes	20.2	14.36-26.10
Auxillary radiotherapy				2.890	0.089
	No	13.0	6.83-19.17
	Yes	21.8	18.05-25.61
Histology				0.946	0.331
	Squamous	16.5	2.09-30.91
	Non-squamous	20.1	13.95-26.25