Table 3

 Univariate analysis of pathological prognostic factors

FactorCategoryPetersen (colon)Yorkshire (colon)Yorkshire (rectal)Yorkshire (colorectal)
Survival (95% CI)χ2p ValueSurvival (95% CI)χ2p ValueSurvival (95% CI)χ2p ValueSurvival (95% CI)χ2p Value
Extent of spread beyond muscularis propria<3 mm89.3 (78.7 to 94.7)15.0 (2)0.000674.0 (69.1 to 78.2)33.3 (4)<0.000176.2 (70.2 to 81.2)26.4 (4)<0.000174.8 (71.1 to 78.2)54.7 (4)<0.0001
3–5 mm76.9 (67.2 to 84.1)70.3 (60.7 to 78.8)68.2 (55.0 to 78.3)69.6 (62.1 to 76.0)
>5 mm61.5 (48.7 to 72.0)65.8 (58.7 to 72.0)53.9 (42.8 to 63.7)62.1 (56.2 to 67.8)
Not reported T367.9 (60.1 to 74.4)72.4 (60.2 to 81.5)69.2 (62.8 to 74.7)
Not reported T454.7 (47.6 to 61.2)44.8 (31.7 to 57.0)52.5 (46.2 to 58.3)
Peritoneal involvementAbsent87.1 (80.2 to 91.7)21.7 (1)<0.000170.1 (66.6 to 73.2)24.8 (2)<0.000171.0 (66.3 to 75.2)23.5 (2)<0.000170.4 (67.6 to 72.9)41.0 (2)<0.0001
Present59.9 (49.4 to 68.6)54.9 (47.4 to 61.7)39.1 (24.4 to 53.5)52.0 (45.3 to 58.3)
Not reported70.5 (60.5 to 78.4)62.7 (50.2 to 72.9)67.2 (59.5 to 73.2)
Venous invasionNot evident83.7 (76.2 to 89.0)15.2 (1)0.000169.7 (66.5 to 72.7)12.7 (2)0.001769.9 (65.2 to 74.1)15.6 (2)0.000469.8 (67.1 to 72.2)25.0 (2)<0.0001
Present73 (49.4 to 87.0)56.3 (46.3 to 65.1)52.2 (40.1 to 63.1)54.6 (47.0 to 61.6)
Not reported59.1 (48.3 to 68.4)68.1 (50.7 to 80.5)61.7 (52.8 to 69.5)
Margin involvementNot involved78.7 (72.3 to 83.7)7.3 (1)0.00768.9 (65.9 to 71.8)29.5 (2)<0.000171.3 (66.7 to 75.4)14.2 (2)0.000869.6 (67.1 to 72.0)39.1 (2)<0.0001
Present55.3 (35.8 to 73.6)41.5 (28.3 to 54.1)48.0 (36.6 to 58.5)45.2 (36.6 to 53.5)
Not reported66.6 (49.4 to 79.2)59.8 (33.6 to 78.5)64.5 (50.4 to 75.5)
Tumour perforationAbsent76.6 (70.5 to 81.7)9.3 (1)0.002373.8 (67.7 to 79.0)21.0 (2)<0.000177.0 (68.6 to 83.4)6.6 (2)0.0475.0 (70.1 to 79.1)26.0 (2)<0.0001
Present46.8 (14.8 to 73.9)46.4 (30.9 to 60.4)52.8 (28.9 to 72.0)48.2 (35.3 to 60.0)
Not reported66.6 (63.1 to 69.9)64.8 (59.7 to 69.4)66.0 (63.1 to 68.7)
Dukes C, one positive node58.4 (52.2 to 64.1)57.4 (50.1 to 63.9)57.9 (53.3 to 62.3)