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Pregnancy outcomes

S Wadhera1, W J Millar

  • 1Health Statistics Division at Statistics, Canada, Ottawa.

Health Reports
|January 1, 1996
PubMed
Summary
This summary is machine-generated.

Canadian pregnancy rates declined between 1974 and 1992, with a notable shift in outcomes. More pregnancies ended in induced abortions, while live births and miscarriages/stillbirths decreased proportionally.

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Area of Science:

  • Reproductive Health
  • Demography
  • Public Health

Background:

  • Pregnancy outcomes (live births, induced abortions, miscarriages/stillbirths) are typically analyzed independently.
  • This study provides a comprehensive analysis of all pregnancy outcomes in Canada over an 18-year period.

Purpose of the Study:

  • To examine trends in overall pregnancy rates and the distribution of pregnancy outcomes in Canada from 1974 to 1992.
  • To investigate how pregnancy rates and outcomes varied across different age groups during this period.

Main Methods:

  • Utilized national data on live births, induced abortions, and miscarriages/stillbirths for the years 1974 and 1992.
  • Calculated pregnancy rates per 1,000 women aged 15 to 44.
  • Analyzed changes in the proportion of different pregnancy outcomes and their distribution by maternal age.

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Main Results:

  • Total pregnancies increased from 438,300 in 1974 to 525,100 in 1992, but the overall pregnancy rate per 1,000 women aged 15-44 decreased from 85 to 77.
  • The proportion of pregnancies ending in induced abortions rose significantly from 12% in 1974 to 19% in 1992.
  • Live births decreased from 79% to 76%, and miscarriages/stillbirths fell from 9% to 5% of all pregnancies.
  • Pregnancy rates increased for women in their thirties but declined for all other age groups.
  • Higher abortion proportions were observed in women under 25 and those aged 40 and over.

Conclusions:

  • Despite an overall decline in pregnancy rates, there was a significant shift in outcomes towards induced abortions in Canada between 1974 and 1992.
  • Age-specific trends indicate a rising pregnancy rate among older women (30s), contributing to their increased share of pregnancies.
  • Understanding these evolving trends in pregnancy rates and outcomes is crucial for reproductive health policy and resource allocation.