title: Mean age of mother, 1970-2000.
abstract: OBJECTIVE
  This report presents trends in the mean age of mothers giving birth for the United States for the last three decades. Data are presented by live-birth order, race, Hispanic origin, and State of residence of the mother.
  
  
  METHODS
  Descriptive tabulations and graphs of the trends in the mean age of mother are discussed.
  
  
  RESULTS
  The mean age of mother has increased steadily in the United States over the last three decades. Mothers having their first and second live births had the largest increase in mean age. Among racial and Hispanic origin subgroups, Japanese women had the highest mean age in 2000. Puerto Rican women had the lowest mean age. Massachusetts had the highest mean age in 2000 and Mississippi had the lowest.
authors.forename: T J
authors.initials: TJ
authors.lastname: Mathews
authors.forename: Brady E
authors.initials: BE
authors.lastname: Hamilton
mesh_terms: D000293:Adolescent; D000328:Adult; D001722:Birth Order; D005006:Ethnicity / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D015994:Incidence; D008423:Maternal Age; D008875:Middle Aged; D036801:Parturition / Q000208:ethnology*; D011159:Population Surveillance; D011247:Pregnancy; D011253:Pregnancy in Adolescence / Q000208:ethnology / Q000706:statistics & numerical data*; D018566:Pregnancy, High-Risk; D018570:Risk Assessment; D014481:United States / Q000453:epidemiology; D014798:Vital Statistics