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ItemDefinitionSource or assumption
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Years of income equivalent to one DALY2.8Fortify Health CEA (Givewell, 2019)
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One unit of valueDoubling consumption for one person for one yearGiveDirectly CEA (GiveWell, 2023)
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Units of value created by donating $100,000 to GiveDirectly335
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DALY-eqs averted by donating $100,000 to GiveDirectly119.6Assume that "doubling consumption for one person for one year" means "giving one year of income to one person"
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GiveDirectly's cost-effectiveness in $ per DALY-eq averted836
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Walkthrough
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(1) GiveWell assumed (in 2018) that, for Fortify Health, one DALY equates to 2.8 years income; LEEP uses the same conversion.
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(2) GiveWell also assumes that doubling consumption for one person for one year equates to one unit of value. Donating $100,000 to GiveDirectly results in 335 units of value after all adjustments. This equates to 335 instances of doubling consumption for one person for one year.
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(3) We assume that doubling consumption for one person for one year means giving one year of income to one person.
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(4) By our assumption, 335 instances of doubling consumption for one person for one year equate to 335 years of income. This converts to 119.6 DALY-equivalents averted.
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(5) This means that GiveDirectly’s cost per DALY-equivalent averted is significantly higher than LEEP’s, at $100,000/119.6 DALY-equivalents averted = $836/DALY-equivalent averted.
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