That is, less than one in 1,000 pregnancies for mothers less than 30 years of age results in a baby with Down syndrome. For mothers who are 44 years of age, about 1 in 35 pregnancies results in a baby with Down syndrome.
DEFINITION of 'Defined-Benefit Plan'. An employer-sponsored retirement plan where employee benefits are sorted out based on a formula using factors such as salary history and duration of employment.
Defined Benefit Plans. Once a staple of retirement planning, defined benefit plans are on the decline. These are private pension plans from companies or for government employees that set retirement benefits based on tenure, salary and the age of the employee. Each of these plans will have its own requirement for a minimum retirement age.