Figure 5

Sensitivity analysis for incremental effect on life years saved or lost with 3-yearly screening vs. current practice with a 2-yearly recommendation. Notes: (1) When cytology test characteristics in 2 and 3-yearly screening scenarios were varied, the direction of the incremental effect on 3-yearly screening was different for the two different 3-yearly screening scenarios. Similarly, (2) and (3): changing assumptions about CIN 3 progression to invasive cancer and early re-screening had effects of opposite directions on the two 3-yearly recommendations.