title: Conception intervals and the substitution of fertility over time.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D000569:Americas; D001519:Behavior; D001721:Birth Intervals; D001723:Birth Rate; D003710:Demography; D019049:Developed Countries; D003906:Developing Countries; D004467:Economics; D004493:Education; D004651:Employment; D005191:Family Characteristics; D005220:Fathers; D005298:Fertility; D007182:Income; D018803:Models, Economic; D008962:Models, Theoretical; D009656:North America; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D011584:Psychology; D012106:Research; D012456:Salaries and Fringe Benefits; D012574:Schools; D012725:Sexual Behavior; D012923:Social Class; D012959:Socioeconomic Factors; D013223:Statistics as Topic; D013334:Students; D014481:United States
keywords: Adolescents; Adolescents, Female; Age Factors; Americas; Behavior; Birth Intervals; Data Analysis; Demographic Factors; Developed Countries; Developing Countries; Economic Factors; Economic Model; Education; Employment Status; Family Characteristics; Fathers; Fertility; Fertility Determinants; Fertility Measurements; Income; Mathematical Model; Models, Theoretical; North America; Northern America; Population; Population Characteristics; Population Dynamics; Pregnancy Intervals; Psychosocial Factors; Reproductive Behavior--determinants; Research Methodology; Research Report; Schools; Secondary Schools; Socioeconomic Factors; Socioeconomic Status; Students; United States; Wages; Youth