Prognostic value of additional pathological variables for long-term survival after curative resection of rectal cancer

Table 3 Univariate survival analysis of pathological variables according to stage

Variable	All Cases		LOWER STAGES (Stages 0, 1 and 2)		HIGHER STAGES (Stages 3 and 4)
			5-yr cancer related survival (%)	P (log-rank test)	5-yr cancer related survival (%)	P (log-rank test)
	n	%
Histological type	n = 246
Adenocarcinoma	214	87	79	0.4056	42	0.5016
Mucinous carcinoma	23	9	83		74
Other types	9	4	/		66
Differentiation	n = 235
G1	70	30	77	0.1312	43	0.5792
G2	141	60	87		63
G3	21	8.9	51		42
G4	3	0.1	/		/
Blood vessel invasion	n = 226
Positive	28	12	71	0.5920	46	0.2009
Negative	195	88	77		54
Perineural invasion	n = 224
Positive	31	14	74	0.1143	31	0.4247
Negative	193	86	78		53
Lymphatic invasion	n = 218
Positive	30	14	85	0.9083	27	0.0212
Negative	188	86	76		68