This dad has his hands full, to put it lightly. Considering three of his five children are toddler triplets, this dad is either very lucky or unlucky. While twins aren't too few and far between, triplets are a much rarer sight. In the United States in 2010, twins accounted for 3.31% of births and triplets only 0.14%, or about one in every 8,000 conceptions. Certain factors have been linked to an increased likelihood of a woman conceiving multiples. While women over 35 often find it more difficult to get pregnant, they are more likely to become pregnant with multiples than younger women. Additionally, mothers that use fertility drugs are more likely to have multiples.