Obstetric Statistics

  • Isabel Stabile
  • Tim Chard
  • Gedis Grudzinskas

Abstract

A rate is a means of expressing a raw number as a proportion of another number. Since the result is a fraction with, a value less than 1, it is multiplied by 1000. The crude birth rate relates the total number of births (numerator) to the total population (denominator). The birth rate reflects the impact of fertility on population growth and is expressed as follows:
$$\frac{\text{the number of live or dead births in a year }\times \text{ 1}000}{\text{mid}-\text{year population}}$$
Underdeveloped countries typically have birth rates of 50 or more; developed countries have rates of 20 or less.

Keywords

Obesity Citrate Ranitidine Eclampsia 

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Copyright information

© Springer-Verlag London Limited 2000

Authors and Affiliations

  • Isabel Stabile
    • 1
  • Tim Chard
    • 2
  • Gedis Grudzinskas
    • 3
  1. 1.Center for Prevention and Early Intervention PolicyFlorida State UniversityTallahasseeUSA
  2. 2.Reproductive Physiology Laboratory, Department of Obstetrics and GynaecologySt Bartholomew’s HospitalWest Smithfield, LondonUK
  3. 3.Department of Obstetrics and GynaecologyThe Royal London HospitalWhitechapel, LondonUK

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