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.
In a defined benefit plan, each employeeâs future benefit is determined by a specific formula, and the plan provides a nominal level of benefits on retirement. Usually, the promised benefit is tied to the employeeâs earnings, length of service, or both.