Numbers of triplet, quadruplet, quintuplet and other higher order multiple births: United States 1989-94
|Year||Triplets||Quadruplets||Quintuplets and other higher order multiples||Triplets as percent of all triplet and other higher order multiple births|
Are these medical miracles, or signs of an alarming trend in reproductive science? Here some facts to help you decide.
- Average weight of a singleton newborn: 7 pounds, 6 ounces (3,358 grams).
- Average weight of a triplet newborn: 3 pounds, 12 ounces (1,698 grams).
- Infant death rate for a singleton: 7.8 per 1,000.
- Infant death rate for a triplet: 93.7 per 1,000.
- Triplet infants are 12 times more likely to die during the first year than a singleton infant.
The 5 leading causes of death for singleton, and triplet and other higher order multiple births (Rates are per 100,000 live births)
|Cause of Death||Triplets||Singletons|
|Newborn affected by maternal complications of pregnancy||2,810.2||17.2|
|Respiratory distress syndrome||1,824.8||60.2|
|Disorders relating to short gestation and unspecified low birthweight||729.9||84.2|
|Sudden infant death syndrome||255.5||129.4|
Source: The Centers for Disease Control and Prevention/National Center for Health Statistics
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