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Summary
Cesarean section rates in Canada significantly increased from 1970 to 1988/89, nearly doubling and paralleling U.S. trends. This study highlights regional and age-related variations in cesarean deliveries and a rise in vaginal births after cesarean.
Area of Science:
- Obstetrics and Gynecology
- Public Health
- Health Services Research
Background:
- Cesarean section (C-section) rates have shown global increases.
- Understanding national and regional trends is crucial for public health policy.
- Canadian C-section data from 1970-1988/89 provides a valuable historical perspective.
Purpose of the Study:
- To analyze trends in cesarean section deliveries in Canada between 1970 and 1988/89.
- To compare Canadian C-section rates with those of other developed countries, specifically the United States and the United Kingdom.
- To examine provincial variations and demographic factors influencing C-section rates.
Main Methods:
- Utilized hospitalization data from Statistics Canada's morbidity database for the period 1970-1988/89.
- Calculated cesarean section rates per 100 hospital deliveries.
- Analyzed data stratified by province, maternal age, and history of previous cesarean section.
Main Results:
- The Canadian C-section rate rose from 5.8 to 19.5 per 100 deliveries between 1970 and 1988/89.
- Canadian rates paralleled U.S. trends and were significantly higher than the UK's by 1988/89.
- Higher rates observed in Newfoundland (23.3) versus Manitoba (15.5); rates increased with maternal age (27.3 for 35+ vs. 13.9 for <20).
- Vaginal birth after previous cesarean increased from 3 to 15.6 per 100 cases (1979/80-1988/89).
Conclusions:
- Canadian cesarean section rates experienced a substantial increase during the study period.
- Significant provincial and age-related disparities in C-section rates were identified.
- The rise in vaginal birth after cesarean suggests a potential shift in obstetric practices towards more conservative management.