Urbanization and the fertility transition in Ghana

This paper examines the way in which migration and urban residence operate to alter fertility outcomes. While urban-rural fertility differentials have long been established for most developing societies, the nature of these differences among migrants and between migrants and those of succeeding generations is not well understood. The evidence presented here suggests that rural-urban migration and urbanization may contribute positively to processes of fertility transition. Using data from the 1998 Kumasi Peri-Urban Survey, which included a 5-year retrospective monthly calendar of childbearing, we suggest that migrants adapt quickly to an urban environment. Our results also reveal generational differences in recent and cumulative fertility. While migrants exhibit higher cumulative fertility than urban residents of the second and third generation, their fertility is significantly lower than rural averages in Ghana. Children of migrants exhibit childbearing patterns quite similar to those in higher-order generations. Most noteworthy is the nature of the disparities in childbearing patterns between migrants and the succeeding generations. Migrant women have higher lifetime fertility than urban natives. Migrant women also exhibit higher fertility over the last 5 years than second generation or high-order urban natives. But these first generation women exhibit lower fertility (vs. urban natives) for the year immediately prior to the survey. These patterns lend support to an interpretation that combines rather than opposes theories of selectivity, disruption, adaptation and socialization. We conclude by discussing mechanisms that might explain these interrelated processes of fertility adjustment and suggest that policies discouraging rural-urban migration need to be revisited.     

Migrant fertility in Ghana: selection versus adaptation and disruption as causal mechanisms

The aim of the study presented in this paper is to disentangle the roles of three mechanisms -- selection, adaptation, and disruption -- in influencing migrant fertility in Ghana. Using data from the 1998 Ghana Demographic and Health Survey, we fit Poisson and sequential logit regression models to discern the effects of the above mechanisms on cumulative fertility and annual probabilities of birth. Characteristics of migrants from four types of migration stream are examined and compared with those of non-migrants at origin and destination. We find substantial support for the selection hypothesis among both rural-urban and urban-rural migrants. Disruption is evident only in the fertility timing of second and higher-order births in Ghana. Our finding that migrants bear children at about the same rates as the natives at destination implies that the growth rate of cities will slow down quickly and that the rural population will continue to have high fertility. Thus to achieve a reduction in the national fertility level, family planning activities need to be directed towards rural areas.     

The influence of rural-urban migration on migrants' fertility in Korea,Mexico and Cameroon

The paper presents a comparative analysis of the relationship between rural-urban migration and fertility in Korea, Mexico, and Cameroon. Using an autoregressive model, the results show a significant rural-urban migration adaptation effect in Korea and Mexico, a reduction of 2.57 and 1.45 children during the entire childbearing period, respectively, when compared to a rural stayer, even after the effect of selection has been controlled. Rural-urban migration has a very small impact on fertility in Cameroon. The unexpected result for Cameroon is due to the fact that the fertility-increasing effect of urban residency on the improved supply conditions of births, such as reduced infertility, offsets the fertility-depressing effect of urban residency on the demand for births. As a result of the adaptation to urban fertility norms, the number of country-wide births was reduced significantly in Mexico and Korea over the time periods studied.     

Migration and fertility in Puerto Rico

Abstract In an investigation based on special tabulations of the 25 per cent sample from the 1960 Census of Population for Puerto Rico, it is found that migration experience tends to be associated with fertility for various marital statuses, including consensual unions, and for rural, urban and metropolitan residence. The findings cannot be attributed to variations in age composition among the various categories as age standardization and age-specificcomparisons yield similar results. However, it is also found that rural-urban and consensually-legally mated differentials in fertility cannot be accounted for by variations in the migration variables that are examined. Thus, consistently higher fertility is found for non-migrants than for migrants; for consensually mated than for legally married and for rural than for urban or metropolitan residents. With a single exception, women in consensual unions, fertility is lower for women in the San Juan metropolitan area than in the other urban areas.     

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。     

中国乡城人口流动与城镇出生人口性别比——基于“五普”数据的分析

本文利用中国第五次人口普查1‰抽样数据,以城镇区域人口为重点,定量分析了农村人口流动对城镇地区人口出生性别比,以及农村流入城镇人口子女性别的影响。研究发现,中国农村未流动人口、农村流入城镇人口和城镇非农村流入人口的出生性别比均偏离了出生性别比的正常水平,农村人口流动影响了城镇地区生育性别,农村流入城镇人口相对较强的男孩偏好观念加剧了城镇地区出生性别比偏高。     

婚姻挤压下农村流动人口的生育性别偏好——基于相对剥夺感视角的分析

中国的出生性别比偏高持续了三十年,婚姻挤压问题日益凸现,大规模的城乡人口流动则加剧了婚姻挤压问题及其社会影响的严重性与复杂性。受制度与非制度因素影响,农村流动人口在城市处于社会底层,易遭遇成婚困难、诱发相对剥夺感,可能对生育偏好产生重要影响。本文基于相对剥夺感视角,对2009年福建省X市外来农村流动人口调查数据的分析发现,婚姻挤压对农村流动人口的生育性别偏好的观念与行为均无显著影响,但相对剥夺感对生育性别偏好行为有显著影响。本研究有助于理解婚姻挤压与相对剥夺感对农村流动人口生育性别偏好演化的特殊作用,对国家调整生育政策、提高流动人口计生服务与管理、促进性别平等有一定借鉴意义。     

Who moves and who stays? Rural out-migration in Nigeria

Data from the nationally representative 1993 Migration and Urbanization Survey of Nigeria are used to simultaneously examine the patterns of rural-rural and rural-urban migration in Nigeria. A multinomial logistic regression model predicts the independent and collective association between individual, household, and regional variables and migration from rural areas to rural and urban destinations. Associations between education, religion and ethnicity and migration propensities exist at the national level. The Kanuri-Shua Arabs are generally non-migrants, the Hausa-Fulani and Yoruba are predominantly rural-rural migrants and the Igbo-Ibibio and Urhobo-Isoko-Edo are predominantly ruralurban migrants. Christians are significantly more mobile than Muslims. While the highly educated are most likely to choose an urban destination, a significant proportion migrate to other rural areas. Concern over population concentration is not supported, as rural migrants move to all regions and to urban and rural areas.     

乡-城转移人口的生育率水平问题

乡一城人口转移作为城市化过程,总体上有利于生育率下降或低生育水平的稳定。但是,由于乡一城转移人口的生育率水平具有既不同于城也有别于乡的差别特征,因此这种转移对城乡生育率的变化必然产生一定的差别效应。通常认为,乡一城转移人口的生育率水平介于城乡之间,即低于乡而高于城。但是,有关研究认为,我国乡一城迁移流动人口的生育率水平已经转变为低于城市。对此,很值得进一步深入探讨。本文首先分析我国城乡生育率的变化和区域差异,然后对乡一城转移人口的总和生育率进行尝试性的推算,最后聚焦讨论流动人口生育行为的流动性问题。     

Urbanization and fertility: An event-history analysis of Coastal Ghana

In this article, we undertake an event-history analysis of fertility in Ghana. We exploit detailed life history calendar data to conduct a more refined and definitive analysis of the relationship among personal traits, urban residence, and fertility. Although urbanization is generally associated with lower fertility in developing countries, inferences in most studies have been hampered by a lack of information about the timing of residence in relationship to childbearing. We find that the effect of urbanization itself is strong, evident, and complex, and persists after we control for the effects of age, cohort, union status, and education. Our discrete-time event-history analysis shows that urban women exhibit fertility rates that are, on average, 11% lower than those of rural women, but the effects vary by parity. Differences in urban population traits would augment the effects of urban adaptation itself. Extensions of the analysis point to the operation of a selection effect in rural-to-urban mobility but provide limited evidence for disruption effects. The possibility of further selection of urbanward migrants on unmeasured traits remains. The analysis also demonstrates the utility of an annual life history calendar for collecting such data in the field.     

Determinants of rural-urban migration in Ghana

Abstract In the 39 years between the 1921 and 1960 censuses, urban population in Ghana multiplied by nine while the population of the whole country only trebled. The major factor in urban growth was rural-urban migration and the reproduction of the migrants. In 1963 a survey consisting of a systematic sample of households in 45 rural centres, randomly chosen in Local Authority Areas selected in accord with the regional rural population distribution, reconstituted the rural population so as to include current migrants in the towns as well as those remaining in rural areas. For analysis 13,748 respondents were divided into 14 categories by ruralurban migration behaviour. At the same time a survey of urban population provided a check on rural-urban migration data. study of the propensity to migrate from rural to urban areas shows that this increases with the closeness of the rural area to a large town, the population size of the rural centre, the economic well-being of the rural household, the number of relatives already in the urban area, the individual's level of education, larger family size and probably lower birth rank, as well as exhibiting specific age and sex patterns. It is shown that only a minor role is played by occupation, conjugal condition and number of dependants. Various interrelations between these factors are discussed, and attention is given to the special importance of education in partially or wholly determining some of the other factors. Census data are used to demonstrate the effect of rural-urban migration in concentrating persons with certain characteristics in the urban areas.     

Men’s Migration and Women’s Fertility in Rural Mozambique

Labor migration profoundly affects households throughout rural Africa. This study looks at how men’s labor migration influences marital fertility in a context where such migration has been massive while its economic returns are increasingly uncertain. Using data from a survey of married women in southern Mozambique, we start with an event-history analysis of birth rates among women married to migrants and those married to nonmigrants. The model detects a lower birth rate among migrants’ wives, which tends to be partially compensated for by an increased birth rate upon cessation of migration. An analysis of women’s lifetime fertility shows that it decreases as the time spent in migration by their husbands accrues. When we compare reproductive intentions stated by respondents with migrant and nonmigrant husbands, we find that migrants’ wives are more likely to want another child regardless of the number of living children, but the difference is significant only for women who see migration as economically benefiting their households. Yet, such women are also significantly more likely to use modern contraception than other women. We interpret these results in light of the debate on enhancing versus disrupting effects of labor migration on families and households in contemporary developing settings.     

基于农民工特征的工业化与城镇化协调发展研究

新时期农民工流动的过程中伴生了工业化和城镇化的六个特点:低价工业化、半城镇化、高价城式化、市民化进程二元化特征、无序人口流动、城市融合进程多样化和复杂化。基于这种特征分析,提出了坚持外造环境与内强素质、分步实施与分类指导、鼓励农民工回归和推进市民化、促进劳动力市场一体化和待遇平等化、发展大都市圈和发展县城为中心的农村城镇化“五个并重”,正确调节进城农民的流向和流速,最终促进工业化和城镇化的协调发展。     

Rural-Urban Migration and Reproductive Behavior in Guatemala

Guatemala has the highest fertility of any country in Latin America, and it is also the least urbanized. Projected rural-urban migration will shift more of Guatemala's population from rural areas into towns and cities. This article uses retrospective life-history data collected in migrant origin and destination areas in Guatemala to compare the fertility of rural-urban migrant women to that of rural and urban nonmigrants. Results from discrete-time hazard regression models of union formation, first birth, and third and higher parity births indicate that delayed marriage while still in rural areas, and the rapid adoption of urban fertility practices after migration, result in intermediate migrant fertility that is closer to that of urban natives than rural nonmigrants. If current patterns are any guide to the future, the redistribution of population from high fertility rural areas to towns and cities in Guatemala will accelerate the decline in aggregate fertility beyond what would have resulted from declines in rural and urban fertility alone.     

Interrelations between migration and fertility in Thailand

Based on special tabulations of 1960 census data on migration within Thailand, this analysis attempts to assess the role of migration in the urbanization process and the relation between migration and fertility. The importance of migration to urban growth is evidenced by the clearcut positive relationship between the percentage of persons classified as either lifetime or 5-year migrants and the urban character of their 1960 place of residence. Yet, the evidence also points to an increasing proportion of urban growth in recent decades attributable to natural increase. The specific relation between fertility and migration varies depending on the measure of migration used: Compared to nonmigrants in their place of destination, the fertility levels of lifetime migrants are not very different; but those of 5-year migrants are considerably lower. Regardless of migration status, however, fertility level is markedly lower for those living in urban places compared to those in rural places. This suggests the important role of both migration and urbanization in affecting fertility levels in Thailand.     

中国农民工的社会网络与性别偏好——基于深圳调查的研究

文章利用西安交通大学人口与发展研究所2005年中国深圳市农民工调查数据,基于社会网络理论定量研究了农民工的性别偏好现状及其影响因素。研究发现流动后农民工的生育观念与行为仍具有明显的男孩偏好特征;社会网络因素、流动因素和个体因素在一定程度上对农民工的男孩偏好观念与行为产生了影响。本文的研究结果对于理解中国城镇人口出生性别比偏高的现象和原因有重要作用。     

Exploring Child Mortality Risks Associated with Diverse Patterns of Maternal Migration in Haiti

Internal migration is a salient dimension of adulthood in Haiti, particularly among women. Despite the high prevalence of migration in Haiti, it remains unknown whether Haitian women’s diverse patterns of migration influence their children’s health and survival. In this paper, we introduce the concept of lateral (i.e., rural-to-rural, urban-to-urban) versus nonlateral (i.e., rural-to-urban, urban-to-rural) migration to describe how some patterns of mothers’ internal migration may be associated with particularly high mortality among children. We use the 2006 Haitian Demographic and Health Survey to estimate a series of discrete-time hazard models among 7,409 rural children and 3,864 urban children. We find that compared with their peers with nonmigrant mothers, children born to lateral migrants generally experience lower mortality, whereas those born to nonlateral migrants generally experience higher mortality. Although there are important distinctions across Haiti’s rural and urban contexts, these associations remain net of socioeconomic factors, suggesting they are not entirely attributable to migrant selection. Considering the timing of maternal migration uncovers even more variation in the child health implications of maternal migration; however, the results counter the standard disruption and adaptation perspective. Although future work is needed to identify the processes underlying the differential risk of child mortality across lateral versus nonlateral migrants, the study demonstrates that looking beyond rural-to-urban migration and considering the timing of maternal migration can provide a fuller, more complex understanding of migration’s association with child health.     

The fertility of negroes without southern rural experience: A re-examination of the 1960 GAF study findings with 1967 SEO Data

Abstract A major finding of the 1960 'Growth of American Families' (GAF) study was that whites and blacks without southern rural experience had similar fertility. This paper reports on a re-examination of this finding with a substantially larger black sample. Data from the 1967 Survey of Economic Opportunity demonstrated that the residence background classification utilized in the GAF study defeated, in part, the attempt to remove the effects of rural experience on fertility. Indigenous urban blacks had 25% higher fertility than indigenous urban whites. The fertility of urban black migrants out of the rural South was sharply curtailed in contrast to those remaining in the rural South. Although urban blacks of southern rural background had nominally higher fertility than indigenous urban blacks, the difference was neither statistically nor substantively significant. These results demand a re-ordering of the interpretation of the impact that migration has on urban black fertility and the white-black differential in fertility.     

The effect of female migration on infant and child survival in Uganda

This article uses data from the 1996 Uganda Demographic and Health Survey to examine whether migration of women improves the survival chances of their children to age five. We expand on prior research by testing not only the hypothesized positive effect of rural-urban migration, but also the effects of other migration stream behaviours on child survival. Results show that up to 10% of children die before age five and within-group differences in mortality exist among urban and rural children depending on their mother's migration status. Only urban-urban migration was significantly related to child survival, compared to rural non-migrants, after controlling for other factors, although other streams of migration (rural-urban, urban-rural, rural-rural) were positively related to child survival. Generally, migration explains a small component of the variance in child survival. Several other factors, including parents' education, household size, household headship, mother's age at birth, duration of breastfeeding, and place of delivery have a significant predictive power on child survival.     

Residence background,migration, and fertility

This paper attempts to clarify confusion concerning residence background and migration, and to demonstrate that each of these factors exerts an independent effect on fertility. Basic premises underlying the direction of the effect of these variables on fertility are examined. Data from the 1967 Survey of Economic Opportunity indicate that migration and residence background do have independent effects. It is concluded that present generalizations as to the direction of their influence should be submitted to closer scrutiny with additional data in the future. In addition, an index of rural exposure is developed to test the proposition that fertility varies directly with degree of rural experience. The data only partially support this hypothesis. Moreover, rural-to-urban migrants are found to have only slightly higher fertility than the receiving urban-origin population.