Additional births averted when abortion is added to contraception.
D000029:Abortion, Legal; D000328:Adult; D000367:Age Factors; D001723:Birth Rate; D003267:Contraception; D005193:Family Planning Services; D005260:Female; D005298:Fertility; D005865:Gestational Age; D006801:Humans; D008875:Middle Aged; D008962:Models, Theoretical; D011155:Population Control; D011247:Pregnancy; D011275:Pregnancy, Unwanted; D013223:Statistics as Topic; D013997:Time Factors