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Table 2 Summary of attributes and attribute levels in the discrete choice experiments

From: Application of discrete choice experiments to estimate value of life: a national study protocol in Iran

Attributes NO. levels Levels
Cause of death 3 Cardiovascular diseases, Cancer, Road traffic accidents
Risk reduction plan 4 Reducing harmful use of alcohol and tobacco, Healthy diet, Physical activity, Effective road safety measures
Effect starts 4 Immediately, 2 years later, 5 years later, 10 years later
Risk reduction 4 3/10,000, 6/10,000, 9/10,000, 15/10,000
Cost 4 12, 24, 36, 48 million IRR per year (in Islamic Republic of Iran Rial, about 284, 569, 853,1137 US dollars)