Table 12.

Multivariate linear regression analysis with respect to number of adenomas (prevalence at last observation (n=299); regression coefficient (beta))

Factor	Beta	SE	t	p Value
Age at last colonoscopy*	0.247	0.059	4.2	<0.001
Family classification	0.168	0.164	1.0	0.307
Sex	−0.094	0.157	−0.6	0.551
Constant −0.681

*Age per 10 year increment.

Family classification: 1=HNPCC, 2=HERcrc.

Competing non-significant statistical factors were sex and family classification.