Table 1.

Summary of the incidence of colorectal adenoma

Values are presented as number (%).

Dx, diagnosis; LGD, low grade dysplasia; HGD, high grade dysplasia.

^aThe data are produced based on the datasheets from 21 institutes. Incomplete data submitted from 4 institutes are excluded; ^bThe data are produced based on the datasheets from 24 institutes. One institute does not report adenoma grading and is excluded; ^cThe data in 2005 are produced based on the datasheets from 23 institutes. One institute does not complete the data in this year.