Q: What are the odds of having a multiple birth?
A: According to mathematical probabilities, the estimated odds in the United States of having spontaneous multiples (of any zygosity) are as follows:
|Twins||1 in 83 pregnancies|
|Triplets||1 in 6,889 pregnancies|
|Quadruplets||1 in 571,787 pregnancies|
|Quintuplets||1 in 47,458,321 pregnancies|
|Sextuplets||1 in 3,939,040,643 pregnancies|