Table 1 Characteristics of the study population
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 |