Use this summary health measure when deaths, cases, disability weights, durations, and reference life expectancies come from a compatible burden-of-disease framework.

Deaths

Deaths from the condition.

LE at death

Standard life expectancy in years at the age of death.

Incident cases

New cases arising during the period.

DW

Disability weight between zero (full health) and one (death).

Duration

Average duration of the disabling state in years.

YLL

Years of life lost to mortality.

YLD

Years lived with disability.

DALY

Total DALYs, YLL plus YLD.

Results depend strongly on case definitions, disability weights, duration assumptions, and the standard life table. Do not mix discounted, age-weighted, incidence-based, and prevalence-based inputs without documenting the convention.

Report mortality and disability components separately alongside the combined summary measure. Case counts, crude rates, and uncertainty intervals help readers interpret what the aggregate health-loss value represents.

• YLD Calculator

  Compute years lived with disability as the sum of case counts times disability weights, using either current prevalence or incidence times duration; prevalence is the default per the GBD 2010+ convention.

• YLL Calculator

  Compute total years of life lost as the sum of deaths in each age group times the standard life expectancy remaining at that age, undiscounted and without age weighting per the GBD 2010+ convention.

• HALE Calculator

  Compute health-adjusted life expectancy as total life expectancy minus the expected number of years lived in reduced health, per the definitional identity used by summary measures of population health.