“…Multiple factors influence the incidence of abortion, including access to health care services and contraception (87)(88)(89); the availability of abortion providers (8,9,50,90-92); state regulations, such as mandatory waiting periods (68), parental involvement laws (93), and legal restrictions on abortion providers (94,95); increasing acceptance of nonmarital childbearing (96,97); shifts in the race/ethnicity composition of the U.S. population (98,99); and changes in the economy and the resulting impact on fertility preferences and use of contraception (100,101). However, despite the multiple influences on abortion, because unintended pregnancy precedes nearly all cases of abortions, ¶ ¶ ¶ ¶ ¶ efforts to reduce the incidence of abortion need to focus on helping women, men, and couples avoid pregnancies that they do not desire.…”