Notation | Definition |
---|---|
Introduced in Equation 1 | |
x | Age |
n | Age interval length |
e x | Life expectancy at age x |
| Standard life expectancy at age x |
| Standard life expectancy for age interval x to x + n |
n a x | Average age of death for age interval x to x + n |
Introduced in Equations 2 to 5 | |
n Y x | Expected years of life lost for age interval x to x + n |
n D x | Number of deaths in age interval x to x + n |
r | Discount rate (usually set to 0.03) |
K | Age-weighting modulation constant (K = 0, no weighting; K = 1, weighting) |
β | Age-weighting constant (set to β = 0.04) |
C | Adjustment constant for age-weights (set to 0.1658) |
Y LL | Expected years of life lost (Y LL = ∑ n Y x ) |
Equation 6 | |
ASY R | Age-standardized Y LL rate (∑) |
| Weighted expected years of life rate for age interval x to x + n |
n y x | Expected years of life lost rate for age interval x to x + n |
n N x | Population (person-year) estimate for age interval x to x + n |
n w x | Year 2000 United States standard population as weights (∑ n w x = 1) |
n W x | Year 2000 United States standard population (∑ n W x = 1,000,000) |