Figure 3.

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.