Table 1

Recommended surveillance intervals and intervals considered appropriate in the presented analysis

Adenoma findings at index colonoscopySurveillance interval recommendationInterval considered appropriate*
June 1998–2001≥2 adenomas12 months (1 year)9–15 months
1 adenoma24–36 months (2–3 years)18–42 months
Since 2002≥3 adenomas36 months (3 years)30–42 months
1 or 2 adenomas72 months (6 years)66–78 months
  • *Appropriate interval is ±3 months for a 1-year interval recommendation and ±6 months for longer interval recommendations.