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Forest plot for advanced adenomas: results from individual studies and meta-analysis. For the analysis we used intention-to-treat data for patients who underwent follow-up evaluation (follow-up colonoscopies). ECP: European Cancer Prevention Organisation; SWOG: Southwest Oncology Group; n: Number of subjects with at least one adenoma detected during the follow-up evaluation; N: Number of subjects who underwent follow-up evaluation; RR: Risk ratio.
