Definition of Terms

  • Pregnancy Rate – number of pregnancies ÷ population, usually multiplied by 1,000. Example – pregnancy rate for teens 15-19, 1996 (from the Alan Guttmacher Institute):

  • Proportion of Pregnancies Ending in Birth, Abortion, or Miscarriage – number of births, abortions, or miscarriages ÷ number of pregnancies, multiplied by 100. Example – proportion of pregnancies to teens 15-19, 1996 (from the Alan Guttmacher Institute), that ended in birth:

    880,170 pregnancies
    9,043,000 girls aged 15-19

    = 0.0973 × 1,000 = 97.3 per 1,000

    491,577 births
    880,170 pregnancies

    = 0.56 × 100 = 56 percent

    (This statistic can also be calculated using rates instead of numbers.)

    Just the Facts (October 2000) – Page 5

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Questions? Please contact Anastasia Snyder, Assistant Professor of Rural Sociology and Demography
Copyright 2002. The Pennsylvania State University.
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