title: [Japan-U.S. comparison of the effectiveness of fertility control--the analysis of the incidence of unplanned births (author's transl)].
authors.forename: M
authors.initials: M
authors.lastname: Nohara Atoh
mesh_terms: D000028:Abortion, Induced; D000569:Americas; D001208:Asia; D001721:Birth Intervals; D003267:Contraception; D003268:Contraception Behavior; D003710:Demography; D019049:Developed Countries; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D005202:Asia, Eastern; D005298:Fertility; D015994:Incidence; D007564:Japan; D009656:North America; D011153:Population; D011157:Population Dynamics; D011247:Pregnancy; D012106:Research; D012107:Research Design; D012725:Sexual Behavior; D014481:United States
keywords: Abortion, Induced; Americas; Asia; Birth Spacing; Contraception; Contraception Failure; Contraceptive Effectiveness; Contraceptive Usage; Demographic Factors; Developed Countries; Eastern Asia; Family Planning; Fertility; Incidence; Japan; Measurement; North America; Northern America; Population; Population Dynamics; Pregnancy, Unplanned; Reproductive Behavior; Research Methodology; United States; Use-effectiveness