Cesarean Deliveries Among Immigrant and Canadian-Born Women in a Representative Community Population in Canada: A Retrospective Cohort Study.

Abstract

To examine differences in the rate of cesarean delivery between Canadian-born women and immigrants to Canada and by duration of time in Canada and rate of cesarean delivery in their country-of-origin. We used linked data from hospitalization records and the Canadian Community Health Survey for all deliveries after 20 weeks gestation between 2002 and 2017 in Canada (excluding Québec). Odds of cesarean delivery in recent immigrants (<5 y in Canada) and non-recent immigrants (≥5 y in Canada) were compared with those of Canadian-born women using multivariable logistic regression. Immigrants were further categorized using the cesarean delivery rate in their country-of-origin as low (<10%), medium (≥10 to <35%), or high (≥35%). Of the 53505 women included, 89% were Canadian-born, 4% were recent immigrants and 7% were non-recent immigrants. Overall, 28.6% of women had a cesarean delivery. After adjusting for medical and socio-economic factors, the odds of cesarean delivery among recent immigrants (OR 1.12; 95% CI 0.95-1.34) and non-recent immigrants (OR 1.11; 95% CI 0.98-1.25) did not differ statistically from those of Canadian-born women. Recent immigrants from countries with lower cesarean delivery rates had higher odds of cesarean delivery (OR 1.34; 95% CI 1.05-1.70), whereas the odds of cesarean for recent immigrants from medium- and high-rate countries did not differ from those of Canadian-born women. After accounting for demographic and medical factors, few differences remained in cesarean delivery rates between immigrants and Canadian-born women. Country-of-origin practices are unlikely to reflect preferences for cesarean delivery in immigrant women in Canada.