Some principles of cost-benefit analysis of family planning services in developing countries

A number of controversial issues are discussed, relating to the assessment of both costs and benefits of family planning services. All costs and benefits, whether accruing to society or the parents of the child whose birth is averted, and the child itself, should be included in the analysis, even if they cannot easily be measured or appear as externalities. Different rates of interest to be used in discounting to obtain present values apply to various items; these rates may vary between the commercial rates of interest and negative values. It is also shown that the costs of running a service include, in addition to current expenditure, not only basic investments, but also that the benefit accruing to society by averting births comprises a kind of investment, namely the amount spent on the subsistence of the child whose birth is averted before he would have started producing. Marginal values are to be preferred to average values for the calculation of costs and benefits. Thus, the costs of a family planning service should be expressed as the amount of money needed to avert one additional birth and the benefits as the amount saved by one additional averted birth. The latter cannot be measured by comparing the GNP per head when the birth is averted, with the situation when it is not. This can only be done by computing the excess of the child’s life-time consumption over his life-time production.     

Demographic transition in sub-Saharan Africa: How big will the economic dividend be?

In mid-demographic-transition, many Asian countries enjoyed a large demographic ‘dividend’: extra economic growth owing to falling dependant/workforce ratios, or slower natural increase, or both. We estimate the dividend, 1985–2025, in sub-Saharan Africa and its populous countries. Dependency and natural increase peaked around 1985, 20 years after Asia. The UN projects an acceleration of the subsequent slow falls but disregards slowish declines in young-age mortality and thus, we argue, overestimates future fertility decline. Even if one accepts their projection, arithmetical and econometric evidence suggests an annual, if not total, dividend well below Asia's. The dividend arises more from falling dependency than reduced natural increase, and could be increased by accelerating the fertility decline (e.g., by reducing young-age mortality) or by employing a larger workforce productively. Any dividend from transition apart, low saving in much of Africa (unlike Asia) means that, given likely natural increase, current consumption per person is unsustainable because it depletes capital per person.     

Distribution of Closed Birth Intervals in a Heterogeneous Population

The probability distribution of parity-specific closed birth intervals in a heterogeneous population of women is obtained from Biswas' (1980) concept of gradually decreasing fecundabilities. The distribution of parity-specific last closed birth intervals and its moments of various orders are derived for a heterogeneous female population. Simulations are used to compare with models for a homogeneous female population with constant fecundability. The consideration of heterogeneity allows a better fit for empirical closed birth intervals.     

生育水平、性别偏好和出生性别比——兼论出生性别比的监测方法

本研究以马-冯-陈模型为定性基础,认为一定人口的出生性别比并非固定不变,而是受到生育水平的影响。当无性别偏好时,生育水平主要通过改变不同孩次占出生人口比例的方式影响出生性别比;当有性别偏好时,生育水平既影响不同孩次占总出生人口的比例,又影响不同孩次的出生性别比,从而对总出生性别比产生影响。对于没有性别偏好和性别选择行为的人口,生育水平变化是引起出生性别比波动的主要原因。有性别选择行为时,生育水平变化对出生性别比的影响较小,性别选择行为是出生性别比异常的主要原因。监测以"曾生子女孩次和性别次序"为条件划分的人群,可以有效而便捷地判断出生性别比变化趋势。     

Saving for Children’s College Education: An Empirical Analysis of the Trade-off Between the Quality and Quantity of Children

This paper examines the effect of children’s college expenses on household savings. The theoretical model introduces life-cycle savings into the quality–quantity model of fertility and derives predictions for the impact of expected expenses on parents’ savings. Using the actual amount of parents’ financial support reported in the Survey of Consumer Finances, the empirical model estimates the expected expenditures on children’s college education and investigates the effect of expected expenditures on parents’ savings. The results show that parents’ support for each of their children’s college expenses decreases with the number of children. The results are consistent with the predictions of the life-cycle theory of saving and consumption that households save in advance for expected expenses to smooth their consumption.

Trajectories of Fertility and Household Composition in the Demographic Profile of the Czech Republic

The household composition matrix is a representation of the demographic structure of households, specific to age groups of household members and household heads. As such, the matrix reflects also the environmental conditions, housing in particular, that mould households' demographic structure. By specifically depicting the presence of children in households, household composition could be viewed as gauging fertility within the context of housing conditions. This stance is examined in an application to Czech census data for the year 1991, at the commencement of an intense process of socio-economic transformation that accompanied the collapse of communism across Eastern Europe. Within this process, housing had an inadvertent impact upon the structure of households in general, and upon fertility decline in particular. By using the standard matrix representation of household composition, correspondence between trajectories of age-specific fertility and household composition emerge throughout the Czech Republic. This correspondence illustrates the potential household composition analysis carries for fertility measurement and estimation in rapidly changing economic environments.     

中国人口迁移与生育率关系研究

本文利用2000年人口普查数据,考察了中国人口迁移与生育率的关系。通过比较农村本地人口、城市本地人口和流动迁移人口三个人口群体在生育率上的差异,并进行多元统计分析,结果表明,流动迁移对生育率有着非常显著影响,城市外来人口的生育率不仅显著低于农村本地人口,而且也低于城市本地人口;远期流迁人口的生育率要低于近期流迁人口的生育率。中国人口迁移与生育率的关系出现了与已有的迁移生育率理论的不一致。1990年代中国的迁移生育率发生了转变。     

生育文化理论及其体系研究

生育文化理论是生育文化的核心内容,是生育文化的理论基础。建设适应中国特色社会主义经济、政治、文化建设需要的生育文化,必须对生育文化理论的含义、生育文化理论与人口理论的联系与区别,生育文化理论的建构等问题进行探讨。     

The baby boom in New Zealand and other Western developed countries

The Baby Boom was undoubtedly one of the more emblematic events of the twentieth century. As it was a distinctly demographic phenomenon, it has been dissected by some of the most distinguished of demographers. Yet its greatest influence is not in demography, but in fields like marketing, pop-psychology, and even gerontology: the Baby-Boomers rather than the generation currently at reproductive ages are blamed for structural ageing. This paper questions aspects of Baby-Boom mythology. It asks how it has been measured: a boom suggests numerical volume, yet instead we measure flows. It questions whether the hegemonic model of the boom — the American one that has effectively delineated its parameters in Europe, Australisia and Japan, both among demographers and in the popular media — really does apply to other countries. It also asks whether or not Western Europes limited surges in births really qualify as booms in the strict sense of the term. Finally, it raises questions more in the field of the sociology of knowledge: the way the Baby Boom mythology has spread often in the face of counterfactual evidence. This paper is a revised version of the Australian Population Associations 2006 Borrie Lecture.     

论传统家庭模式对生育文化的制度影响

在过去的生育率研究中 ,学术界习惯于从文化学的角度进行分析。传统家庭模式的几个主要特征对生育观念或偏好具有显著影响 ,这说明我国生育行为与传统生育文化的关系是以传统家庭模式作为制度基础的