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. 2011 Apr 5;9:4. doi: 10.1186/1478-7547-9-4

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Copyright ©2011 Perman et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Cost-effectiveness acceptability curve (CEAC) for treatment options. Green circles depict "Usual care"; blue diamonds, "Hypertension Programme". Willingness to pay (WTP) is expressed per 1000 (K) international dollars per life-year gained ($/LYG). CEAC represent the probability for each intervention of being the most cost-effective option for different WTP thresholds. WTP is the maximum amount a society would be willing to pay, sacrifice or exchange for a good or service. The CEAC helps decision-makers to find the most probable cost-effective option according to the local WTP.