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.
At most U.S. corporations, defined-contribution pension plans have largely replaced the traditional defined-benefit pension plans. Defined-benefit plans define the actual benefit you receive and pay out a specific dollar amount per month in retirement.