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.
Health Insurance Glossary. DEFINITION: Limited-benefit plans are medical plans with much lower and more restricted benefits than major medical insurance, but with lower premiums.ealth Insurance Glossary. DEFINITION: Limited-benefit plans are medical plans with much lower and more restricted benefits than major medical insurance, but with lower premiums.