Development and validation of a prediction model for early screening of people at high risk for colorectal cancer

Table 2 Univariate and multivariate analyses of the training set

Variables	Univariate analysis			Multivariate analysis
	OR	95%CI	P value	OR	95%CI	P value
Age (≤ 65 yr vs >65 yr)	1.03	1.02-1.03	< 0.001	1.03	1.02-1.03	< 0.001
Sex (male vs female)	0.98	0.93-1.04	0.540
Ethnicity (Han nationality vs other)	0.90	0.48-1.67	0.731
BMI (< 18.50 kg/m2, 18.50-23.99 kg/m2, 24-27.99 kg/m2vs ≥ 28.00 kg/m2)	1.07	1.06-1.08	< 0.001	1.05	1.04-1.06	< 0.001
WC (≤ 80 cm vs > 80 cm)	1.03	1.02-1.03	< 0.001	1.02	1.01-1.02	< 0.001
Family history (no vs yes)	4.28	4.04-4.54	< 0.001	4.30	4.04-4.56	< 0.001
Lifestyle (unhealthy lifestyle vs healthy lifestyle)	0.45	0.42-0.48	< 0.001	0.44	0.41-0.47	< 0.001

BMI: Body mass index; WC: Waist circumference.