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.
Some pension plans require the employee to make a small, periodic contribution to the fund. The amount of pension that a pensioner receives depends on the type of pension plan. Pension plans generally can be divided into two categories: defined benefit plans and defined contribution plans. A defined benefit plan provides a set amount of benefits to a pensioner. Under a defined contribution plan, the employer places a certain amount of money in the employee's name into the pension fund and makes no promises concerning the level of pension benefits that the employee will receive upon retirement.