Prognostic factors in 165 elderly colorectal cancer patients

Table 2 Results of multivariate analysis for elderly colorectal cancer

Factors	Regression coefficient	Standard error	OR	OR 95%CI		P value
				Lower	Upper
Treatment method	2.028	0.356	7.603	3.782	15.284	0.000
Duke’s stage	0.648	0.295	0.523	0.293	0.933	0.028
Type of histology	-0.824	0.248	0.439	0.270	0.713	0.003
Differentiation of tumor	-0.850	0.246	0.427	0.264	0.692	0.016

Value: Resection + chemotherapy = 0, resection only = 1. Duke’s A + B stage = 0, Duke’s C + D stage = 1. Other type = 0, tubular adenoma = 1. Low differentiation = 0, middle and high differentiation = 1.