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[0] In the United States today: [1] More than 20% of pregnancies meet the definition of high risk to either the mother or the infant. [2] >>Other than biophysical criteria, the chief factor in high risk pregnancies is the number of women who have no access to prenatal care. [3] High risk pregnancy status extends from first confirmation of pregnancy to birth. [4] 
High risk pregnancy is less critical a medical concern because of the reduction in family size and the decrease in unwanted pregnancies.
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