From: Genetic polymorphisms of MMP1, MMP3 and MMP7gene promoter and risk of colorectal adenoma
Large adenomas
Small adenomas
Polyp free controls
N
295
302
568
Age, mean (SD)
62.3 (13.1)
60.6 (12.1)
60.7 (12.4)
Sex ratio (male/female)
1.68
1.24
1.52