From an initial sampling, we have determined the following statistics:
53% before conception
47% after conception, before birth
Since this sampling we have added one more rare category to when PBEs might occur: after birth, before adoption. So far, we have only met one couple who have experienced this category of PBE. This account is in my new book, Waiting in the Wings
63% to mothers
13% to fathers
24% to others — siblings, grandparents, self in flashbacks, other relatives, close friends, midwives.
When the experience involves contact or communication with spirits who have not yet been born, the contact can occur in one or more ways: