The risks of reproductive impairment in the later years of childbearing.
D000022:Abortion, Spontaneous; D000367:Age Factors; D000569:Americas; D001519:Behavior; D001723:Birth Rate; D003075:Coitus; D003710:Demography; D019049:Developed Countries; D004194:Disease; D005298:Fertility; D007246:Infertility; D008393:Marriage; D008423:Maternal Age; D009656:North America; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D011248:Pregnancy Complications; D012098:Reproduction; D012725:Sexual Behavior; D014481:United States
Abortion, Spontaneous; Age Factors--women; Age Specific Fertility Rate; Americas; Behavior; Birth Rate; Coital Frequency; Delayed Childbearing; Demographic Factors; Developed Countries; Differential Fertility; Diseases; Fecundity; Fertility; Fertility Decline; Fertility Determinants; Fertility Measurements; Fertility Rate; Infertility; Intermediate Variables; Literature Review; Low Fertility Population; Marital Fertility; Marriage; Marriage Age; Marriage Patterns; Marriage Postponement; North America; Northern America; Nuptiality; Population; Population Characteristics; Population Dynamics; Pregnancy Complications; Reproduction; Reproductive Behavior; Sex Behavior; Subfecundity--changes; United States