Table 3.
Definitions and sources of data used in the cost of illness analysis.
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|---|---|---|---|---|
| VARIABLE | DEFINITION | SOURCE | MEAN | S.D. |
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| Cost/DALY (ln) | Cost of illness per DALY (USD; PPP adjusted; 2020 price level; natural log) | Adapted from Christensen et al. (2020) | 6.50 | 2.61 |
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| Severe disorders | Binary variable indicating severe disorder (1 = severe; 0 = common) | Christensen et al. (2020) | 0.21 | 0.41 |
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| Productivity costs | Binary variable indicating measure of productivity loss (1 = productivity loss; 0 = other costs) | Christensen et al. (2020) | 0.09 | 0.29 |
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| Societal costs | Binary variable indicating measure of societal costs (1 = societal costs; 0 = other costs) | Christensen et al. (2020) | 0.46 | 0.50 |
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| GDP per capita (ln) | GDP per capita (USD; PPP adjusted; 2020 price level; natural log) | World Bank | 10.80 | 0.55 |
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| Hazard exposure | Composite index natural hazards (0–10) | INFORM Risk | 3.36 | 1.79 |
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| Air pollution | Proportion of population exposed to PM2.5 air pollution levels exceeding WHO guideline value | World Bank | 11.58 | 6.28 |
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| Access to green space | Proportion of population living in urban areas | World Bank | 78.46 | 10.40 |
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PPP = Purchasing Power Parity.