Table 3. Significance testing of markers in populations with normal endoscopy, polyps, or cancer.

	CEA ng ml–1	Total nuclear DNA ng ml–1 plasma	Mitochondrial DNA ng ml –1plasma	Line1 79/ Line1 300	Alu 115/247	Line1 300 ng ml–1 plasma	Alu 247 ng ml–1 plasma
Polyps vs normal	0.254	P<0.001	0.001	0.721	0.879	0.007	0.001
Cancer vs normal	0.396	0.001	0.017	0.001	P<0.001	0.174	0.004
Polyps and cancer vs normal	0.234	P<0.001	P<0.001	0.033	0.043	0.014	P<0.001

Abbreviation: CEA=carcinoembryonic antigen.

Mann–Whitney U-test, Bonferroni correction applied, significance level P=0.005.