3.

Ⅲa期手术与非手术组的无进展生存期

Progression free survival of surgical and non-surgical groups of stage Ⅲa

Stage		Group	PFS (month)	95%CI	χ2	P
Ⅲa	Total				1.575	0.209
		Surgery	19.2	14.88-23.47
		Non-surgery	11.9	8.40-15.34
Ⅲa	T4N0/T3-4N1				0.401	0.527
		Surgery	14.6	8.52-20.69
		Non-surgery	10.5	8.13-12.94
	T1-3N2				0.845	0.358
		Surgery	19.8	14.78-24.88
		Non-surgery	12.7	10.19-15.27