Alternative approaches to calculating DALYs averted
| DALY 1 | DALY 2 | DALY 3 | DALY 4 | ||
| Survival effects (YLLs averted) | Based on indirectly estimating effects on survival from mortality (A). | Directly estimated (D). | Directly estimated (G). | ||
| Morbidity effects (YLDs averted) | Direct effect | Uses indirectly estimated effects on survival from mortality as a surrogate for morbidity effects (B). | Uses directly estimated survival effects as a surrogate for morbidity effects (E). | Directly estimated (F). | |
| Indirect effect | Uses average overall population health as a surrogate for increase in YLD burden associated with increase in YLLs averted (C). | ||||
DALYs, disability-adjusted life years; YLDs, years of life disabled; YLLs, years of life lost.