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.
A defined benefit plan is a type of retirement plan that is offered by employers as a benefit to employees. This type of plan guarantees a specific retirement benefit for employees after a certain number of years of service. This plan is also referred to as a pension plan.