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 PlansâIn a defined benefit plan, the employer agrees to provide the employee a nominal benefit amount at retirement based on a specified formula. The formula is usually one of three general types: a flat-benefit formula, a career-average formula, or a final-pay formula.