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image of Figure 1
Figure 1

Key to interpretation of incremental cost effectiveness ratio plots

This article is copyright of The Authors, 2017.

ICER: incremental cost effectiveness ratio.

ICERs with a positive value can fall within either quadrant 1 or 3. Surveillance scenarios in quadrant 1 can be acceptable in terms of cost-effectiveness, if they are within a threshold of acceptability (to be defined by policymakers). Scenarios with ICER values in quadrant 3 are likely to be unsuitable for policy objectives. A negative ICER value could indicate either the most desirable result (quadrant 2), or an undesirable outcome (quadrant 4), hence care should be taken in interpretation.

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