Colon Polyp Detection in Primary Health Care Institutions of Korea: Detection Rate and Issues with Following the Guidelines.

In the average-risk patient group, when those in their 30s, 40s, and 50s were compared, the incidence of polyps was 50.8%, 56.6%, and 63.4%, respectively; adenoma was 20.1%, 29.4%, and 43%, respectively; advanced adenoma was 4.4%, 6.7%, and 10.3%, respectively; and high-risk adenoma was 5.6%, 9.5%, and 14.6%, respectively, showing an increasing trend (p<0.05) ( Fig. 2 ).

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