nulliparitás
Nulliparity refers to a state of never having given birth to a viable offspring. In medical and demographic contexts, nulliparity is often used to describe a woman who has never been pregnant beyond the point of viability, typically considered 20 weeks of gestation. This term is distinct from nulligravidity, which signifies never having been pregnant at all.
The concept of nulliparity is significant in various fields. In obstetrics and gynecology, it can be a
Demographically, nulliparity rates can provide insights into societal trends, such as delayed childbearing, increased use of