Wadhera S
Health Rep. 1989;1(2):211-23.
This paper examines Canadian birth data from 1921 to 1987. Generally, birth and fertility rates have been declining since the baby boom of the 1940s and 1950s. Since 1972, Canada's total fertility rate has remained below the replacement level of 2.1, paralleling trends in the United States and other Western countries. From 1971 to 1987, the median age of mothers increased by two years for all births, and about three years each for first and second births. Changes in rates by province and by age are also examined.
本文研究了1921年至1987年加拿大的出生数据。总体而言，自20世纪40年代和50年代的婴儿潮以来，出生率和生育率一直在下降。自1972年以来，加拿大的总生育率一直低于2.1的更替水平，与美国和其他西方国家的趋势相似。从1971年到1987年，所有出生婴儿的母亲年龄中位数增加了两岁，头胎和二胎出生的母亲年龄中位数各增加了约三岁。还研究了各省和各年龄段的比率变化。
