TABLE 2.

Tumor Characteristics at Presentation

	Signet Ring Cell Carcinoma (A)		Well and Moderately Differentiated AC (B)			Poorly Differentiated AC (C)
Variable	N	%	N	%	P (A vs B)	N	%	P (A vs C)
AJCC stage
1A	1019	61.9	1,981	58.2	0.024	778	29.7	<0.001
1B	124	7.5	395	11.6	< 0.001	274	10.5	0.003
2A	90	5.5	263	7.7	0.006	224	8.6	<0.001
2B	101	6.1	215	6.3	0.999	335	12.8	<0.001
3A	74	4.5	194	5.7	0.147	243	9.3	<0.001
3B	85	5.2	177	5.2	0.999	305	11.7	<0.001
3C	153	9.3	178	5.2	<0.001	459	17.5	<0.001
Tumor stage
T1a	766	46.5	1,081	31.8	<0.001	384	14.7	<0.001
T1b	325	19.7	1,100	32.3	<0.001	529	20.2	0.999
T2	119	7.2	408	12.0	<0.001	363	13.9	<0.001
T3	107	6.5	376	11.0	<0.001	380	14.5	<0.001
T4a	318	19.3	431	12.7	<0.001	935	35.7	<0.001
T4b	11	0.7	7	0.2	0.019	27	1.0	0.439
Node stage
N0	1222	74.2	2438	71.6	0.105	1248	47.7	<0.001
N1	118	7.2	406	11.9	<0.001	384	14.7	<0.001
N2	112	6.8	266	7.8	0.400	389	14.9	<0.001
N3a	105	6.4	207	6.1	0.999	356	13.6	<0.001
N3b	89	5.4	86	2.5	<0.001	241	9.2	<0.001

AJCC indicates American Joint Committee on cancer, 7th edition