Table 2.

Association of independent variables in unadjusted and adjusted form with dependent variable (CRC=yes, CRC=no)

Variable		Unadjusteda		Adjustedb
		OR (CI 95%)	Significance	OR (CI 95%)	Significance
Gender
	Male	1		1
	Female	0.55 (0.38 – 0.79)	0.001	0.42 (0.26 – 0.67)	<0.001
Smoking
	No	1		1
	Yes	2.43 (1.38 – 4.27)	0.002	0.92 (0.40 – 2.13)	0.842
Alcohol consumption
	No	1		1
	Yes	7 (2.32 – 21.17)	0.001	3.44 (0.75 – 15.72)	0.112
Opiumuse
	No	1		1
	Yes	12.74 (1.58 – 102.70)	0.017	2.88 (0.24 – 33.87)	0.401
Age (Y)
	<50	1		1
	>=50	12.52 (7.47 – 20.98)	<0.001	13.84 (8.05 – 23.78)	<0.001

^a ; Simple logistic regression, ^b ; Multiple logistic regression, OR; Odd ratio, and CI; Confidence interval.