Nortman D L, Halvas J, Rabago A
Stud Fam Plann. 1986 Jan-Feb;17(1):1-6.
A cost-benefit analysis of the family planning program of the Mexican Social Security System (IMSS) was undertaken to test the hypothesis that IMSS's family planning services yield a net savings to IMSS by reducing the load on its maternal and infant care service. The cost data are believed to be of exceptionally high quality because they were empirically ascertained by a retrospective and prospective survey of unit time and personnel costs per specified detailed type of service in 37 IMSS hospitals and 16 clinics in 13 of Mexico's 32 states. Based on the average cost per case, the analysis disclosed that for every peso (constant 1983 currency) that IMSS spent on family planning services to its urban population during 1972-1984 inclusive, the agency saved nine pesos. The article concludes by raising the speculative question as to the proportion of the births averted by the IMSS family planning program that would have been averted in the absence of IMSS's family planning services.
对墨西哥社会保障系统（IMSS）的计划生育项目进行了成本效益分析，以检验以下假设：IMSS的计划生育服务通过减轻其母婴护理服务的负担，为IMSS带来净节约。成本数据被认为具有极高的质量，因为它们是通过对墨西哥32个州中13个州的37家IMSS医院和16家诊所按特定详细服务类型的单位时间和人员成本进行回顾性和前瞻性调查而凭经验确定的。根据每个案例的平均成本，分析表明，在1972年至1984年期间，IMSS为其城市人口提供计划生育服务每花费1比索（1983年不变货币），该机构就节省9比索。文章最后提出了一个推测性问题：在没有IMSS计划生育服务的情况下，IMSS计划生育项目避免的出生比例会是多少。
