Table 3. Patient distributions for the TNM 7^th edition and new staging system.

	TNM 7th edition
		pN0	pN1	pN2	pN3	total
	new N0	3794	0	0	0	3794
	new N1	0	641	222	35	898
	new N2	0	75	279	229	583
	new N3	0	0	99	651	750
	total	3794	716	600	915	6025
New staging system		Ia	Ib	IIa	IIb	IIIa	IIIb	IIIc	total
	new Ia	2721	0	0	0	0	0	0	2721
	new Ib	0	641	31	0	0	0	0	672
	new IIa	0	23	433	54	6	0	0	516
	new IIb	0	0	19	513	74	13	0	619
	new IIIa	0	0	0	29	289	136	15	469
	new IIIb	0	0	0	0	42	237	144	423
	new IIIc	0	0	0	0	0	59	546	605
	total	2721	664	483	596	411	445	705	6025

kappa value = 0.803 (between new N stage and pN 7^th stage), 0.856 (between new TNM stage and TNM 7^th stage)