Estimates of lifetime pregnancy rates by year, age group, and pregnancy intentions.

Results indicate that in 1973–77 women would have had 2.52 lifetime pregnancies according to the fertility age rates observed at that period. Among these pregnancies, 1.29 would have been wanted births, 1.23 unwanted pregnancies (0.59 unwanted births and 0.64 abortions).
* Miscarriages are not included.
(1) (2) Surveys data.
(3) National statistcs.
(4)National statistics (Pison 2010).
(5) Surveys data (Beaujouan and Toulemon. 2013) for women aged 25–34.

研究结果表明，基于1973年至1977年观测得到的育龄期生育率，该时期女性的终身妊娠数约为2.52次。其中，1.29次为计划内生育，1.23次为非意愿妊娠（含0.59次非意愿生育与0.64次人工流产）。
* 本统计未纳入自然流产案例。
(1)、(2) 调查数据。
(3) 国家统计数据。
(4) 国家统计数据（Pison 2010）。
(5) 针对25至34岁女性的调查数据（Beaujouan与Toulemon，2013）。