Internal migration following adverse life events: Assessing the likelihood of return migration and migration toward family

There are well-documented associations between life course changes and migration; yet, the occurrence, order, and timing of reasons for migrating are growing increasingly diverse. Migration following adverse life events, such as a divorce or an involuntary job loss, may be qualitatively distinct from migration undertaken for other reasons. Moves, especially long-distance moves, following adverse life events, may be defined more by seeking family and familiar locations. Moreover, a heightened probability of migration may occur not only immediately after an adverse life event but also in the years after. We explore these questions in the US context with longitudinal data from the 1983 to 2019 waves of the Panel Study of Income Dynamics, which provides information on residential locations, locations of family members, and adverse life events for individuals over time. We focus on five specific events: divorce, the death of a spouse, involuntary job loss, the onset of a chronic physical health condition, and the onset of a chronic mental health condition. Using multivariate regression, we find that divorce and job loss induce long-distance moves, especially return moves and moves towards family. Chronic physical conditions deter moving in general but increase the chances of return moves (after a period of time) and moves towards family. These results have implications for understanding migration as a response to adverse life events, both immediately and over time.

Femorally inserted central catheter, migration and catheter damage during contrast media injection: A case report

Femorally inserted Central Catheters are increasingly used also for medium and long-term catheterization as an alternative to Centrally and Peripherally inserted Central Catheters. If certified as "power injectable," they may be used for contrast media injection during radiological examinations. It is important to consider the risk that, as with other types of catheters, the injection of contrast media could cause migration or damage to the device. The case of a Femoral catheter migration in hepatic vein, during CT scan, is described.

Linking internal and international migration over the life course: A sequence analysis of individual migration trajectories in Europe

Because internal and international migration are typically conceptualized and measured separately, empirical evidence on the links between these two forms of population movement remains partial. This paper takes a step towards integration by establishing how internal and international migration precede one another in various sequenced relationships from birth to age 50 in 20 European countries. We apply sequence and cluster analysis to full retrospective migration histories collected as part of the Survey of Health, Ageing and Retirement in Europe in 2008-09 and 2017, for individuals born between 1950 and 1965. The results show that nearly all international migrants engage in internal mobility at some point in their lives. However, individual migration trajectories are delineated by the order of internal and international moves, the duration and timing of stays abroad, and the extent to which individuals engage in return international migration. Institutional and economic conditions shape the diversity of migration experiences.

Age-specific sex ratios: Examining rural-urban variation within low- and middle-income countries

The balance of men and women in society, captured by sex ratios, determines key social and demographic phenomena. Previous research has explored sex ratios mainly at birth and up to age five at national level, whereas we address rural-urban gaps in sex ratios for all ages. Our measures are based on the United Nations data on rural and urban populations by age and sex for 112 low- and middle-income countries in 2015. We show that rural sex ratios are higher than urban sex ratios among children and older people, whereas at working ages, urban areas are dominated by males. Our analysis suggests that the urban transition itself is not driving the gap in rural-urban sex ratios. Rather, internal migration seems to be key in shaping rural-urban sex ratio divergence in sub-Saharan Africa, while both internal migration and mortality differentials appear to be the predominant mechanisms driving sex ratio gaps in Latin America.

Employment of highly-skilled migrants during the pandemic: Focus on internal migration in Indonesia

This article examines whether highly-skilled migrants (HSMs) have better employment prospects compared to low-skilled migrants (LSMs), highly-skilled non-migrants (HSNMs) and low-skilled non-migrants (LSNMs) during the unsettling time of the COVID-19 pandemic. This question was explored by focusing on internal migration in Indonesia utilizing the August 2020 National Labor Force Survey, which includes several pandemic-related information. The study examined employment in terms of working status, change in hours worked and change in income. The results indicate that having high skills was very important in coping with the disruptions in the labor market, regardless of the migration status. The highly-skilled migrants were the second best (after the highly-skilled non-migrants) in coping with the crisis. As this study focused on migration, future research should focus more on short-term mobility, such as commuters, who were likely to have been more disadvantaged by mobility restrictions during the pandemic.

Validity of Self-Report for Ascertaining HIV Status Among Circular Migrants and Permanent Residents in South Africa: A Cross-Sectional, Population-Based Analysis

While expanded HIV testing is needed in South Africa, increasing accurate self-report of HIV status is an essential parallel goal in this highly mobile population. If self-report can ascertain true HIV-positive status, persons with HIV (PWH) could be linked to life-saving care without the existing delays required by producing medical records or undergoing confirmatory testing, which are especially burdensome for the country's high prevalence of circular migrants. We used Wave 1 data from The Migration and Health Follow-Up Study, a representative adult cohort, including circular migrants and permanent residents, randomly sampled from the Agincourt Health and Demographic Surveillance System in a rural area of Mpumalanga Province. Within the analytic sample (n = 1,918), sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of self-report were calculated with dried blood spot (DBS) HIV test results as the standard. Among in-person participants (n = 2,468), 88.8% consented to DBS-HIV testing. HIV prevalence was 25.3%. Sensitivity of self-report was 43.9% (95% CI: 39.5-48.5), PPV was 93.4% (95% CI: 89.5-96.0); specificity was 99.0% (95% CI: 98.3-99.4) and NPV was 83.9% (95% CI: 82.8-84.9). Self-report of an HIV-positive status was predictive of true status for both migrants and permanent residents in this high-prevalence setting. Persons who self-reported as living with HIV were almost always truly positive, supporting a change to clinical protocol to immediately connect persons who say they are HIV-positive to ART and counselling. However, 56% of PWH did not report as HIV-positive, highlighting the imperative to address barriers to disclosure.

Food Insecurity and Dietary Deprivation: Migrant Households in Nairobi, Kenya

The current study focuses on food consumption and dietary diversity among internal migrant households in Kenya using data from a city-wide household survey of Nairobi conducted in 2018. The paper examined whether migrant households are more likely to experience inferior diets, low dietary diversity, and increased dietary deprivation than their local counterparts. Second, it assesses whether some migrant households experience greater dietary deprivation than others. Third, it analyses whether rural-urban links play a role in boosting dietary diversity among migrant households. Length of stay in the city, the strength of rural-urban links, and food transfers do not show a significant relationship with greater dietary diversity. Better predictors of whether a household is able to escape dietary deprivation include education, employment, and household income. Food price increases also decrease dietary diversity as migrant households adjust their purchasing and consumption patterns. The analysis shows that food security and dietary diversity have a strong relationship with one another: food insecure households also experience the lowest levels of dietary diversity, and food secure households the highest.

Internal migration and utilization of reproductive and maternity care among women in Pakistan: evidence from a recent National Survey

Background

During the last decades, migratory behavior has had a key role in population growth and redistribution in Pakistan. Migration has far-reaching socioeconomic implications for individuals and society at large that could influence the health integrity of Pakistani women. This study aimed to describe the migration patterns and drivers as well as their association with adequate access to reproductive and maternal care among married Pakistani women aged 15-49.

Methods

The data from the 2017-18 Pakistan Demographic Health Survey (PDHS) was used to extract the information on the explanatory (sociodemographic and migration backgrounds) and outcome variables (unmet needs for family planning, adequate antenatal care, and delivery at health facilities). Bivariate and multivariate logistic regression analyses were employed to examine the relationship between these explanatory and outcome variables before and after adjustment for sociodemographic inequalities.

Results

In unadjusted models, the odds of having adequate ANC and delivery at health facilities were approximately 2 to 4 times higher in those living (urban non-migrant), moving to (urban to urban, rural to urban), or leaving the urban areas (rural to urban) as compared to rural non-migrants; likewise, the odds of the unmet needs for family planning was about 20-50% lower in the same migration streams compared to rural non-migrant. However, after adjustment for sociodemographic inequalities, most of these associations attenuated and only the association of urban to urban migration with unmet needs for family planning and the association of urban non-migrant with delivery at health facilities remained significant.

Conclusion

Although the findings suggest that Internal migration flows, particularly those to urban areas (urban to urban and rural to urban), could be associated with better access to reproductive and maternity care among married Pakistani women aged 15-49 years; adjustment for sociodemographic inequalities, particularly education and wealth, nullified this association to a great extent. This has important implications for current policies and interventions in Pakistan and calls for policy reform and women's rights advocacy to enhance the literacy level of young Pakistani girls through well-tailored interventions, maintaining them at school.

Urban exodus? Understanding human mobility in Britain during the COVID-19 pandemic using Meta-Facebook data

Existing empirical work has focused on assessing the effectiveness of nonpharmaceutical interventions on human mobility to contain the spread of COVID-19. Less is known about the ways in which the COVID-19 pandemic has reshaped the spatial patterns of population movement within countries. Anecdotal evidence of an urban exodus from large cities to rural areas emerged during early phases of the pandemic across western societies. Yet, these claims have not been empirically assessed. Traditional data sources, such as censuses offer coarse temporal frequency to analyse population movement over infrequent time intervals. Drawing on a data set of 21 million observations from Meta-Facebook users, we aim to analyse the extent and evolution of changes in the spatial patterns of population movement across the rural-urban continuum in Britain over an 18-month period from March 2020 to August 2021. Our findings show an overall and sustained decline in population movement during periods of high stringency measures, with the most densely populated areas reporting the largest reductions. During these periods, we also find evidence of higher-than-average mobility from high-density population areas to low-density areas, lending some support to claims of large-scale population movements from large cities. Yet, we show that these trends were temporary. Overall mobility levels trended back to precoronavirus levels after the easing of nonpharmaceutical interventions. Following these interventions, we found a reduction in movement to low-density areas and a rise in mobility to high-density agglomerations. Overall, these findings reveal that while COVID-19 generated shock waves leading to temporary changes in the patterns of population movement in Britain, the resulting vibrations have not significantly reshaped the prevalent structures in the national pattern of population movement. As of 2021, internal population movements sit at an intermediate level between those observed pre- and early phases of the pandemic.

The end of urban sprawl? Internal migration across the rural-urban continuum in Switzerland, 1966-2018

In high-income countries, migration redistributed populations from congested city centres into the sparsely populated outskirts, raising challenges to environmental and population health and the conservation of biodiversity. We evaluate whether this periurbanisation process came to a halt in Switzerland by expecting a decline in internal migration and a renewed residential attractiveness of urban agglomeration centres (i.e., re-urbanisation)-two recent trend changes observed in Europe. Relying on data from censuses, registers and surveys, we describe trends in the intensity, geography and sociodemographic differentials of migration across consistently defined urban agglomeration density zones between 1966 and 2018. Although the overall intensity of migration declined, the rate increased among the working age population in part because of the societal diffusion of tertiary education. The dominant urban-bound migration flows are increasingly confined within agglomerations over time. After the diffusion of periurbanisation down the city hierarchy between 1966 and 1990, we observe the emergence of re-urbanisation in some agglomerations and sociodemographic groups around 2000. However, this phenomenon has been temporarily inflated by period-specific transformations in Swiss society. More recently, the process of periurbanisation intensified again and expanded more and more beyond official agglomeration borders.

Internal student migration in India: Impact of the COVID-19 crisis

The education sector in India was among the most affected sectors during the COVID-19 pandemic. While considerable attention has been paid to informal workers' return or reverse migration to their home communities, not much has been reported about the challenges faced by migrant students. Using a mixed-method approach, the current study presents an overview of internal student migration in India prior to the COVID-19 pandemic using data from the 2001 and 2011 Census of India and the 2007-2008 National Sample Survey Organization, and discusses challenges faced by selected migrant learners during the COVID-19 pandemic based on primary research. Based on the census data, nearly 3.3 million migrants in India move for study reasons with 2.9 million migrating within the state (with the duration of residence less than five years) from their last residence within India. The pattern of female student migration suggests an increasingly localized interdistrict migration. Findings from the qualitative data indicate that during the pandemic, students had compromised learning and placement experience, inadequate digital resources and pressure to repay loans. Student migrants experienced varying degrees of the impact of the COVID-19 pandemic based on their destination and migration stream.

Mental health and life satisfaction in East and West Germany: Effects of generation and migration of citizens

Objective

The reunification of Germany after the separation between 1949 and 1990 has offered a unique chance of studying the impact of socialization, political transformation, and migration on mental health. The purpose of this article was to compare mental distress, resources, and life satisfaction (1) between residents of East and West Germany and migrants who have fled from East to West Germany before reunification and (2) between three generations.

Methods

We assessed anxiety, depression, resilience, self-esteem, and life satisfaction, comparing groups based on their residency and migration, as well as three different birth cohorts. Using a representative survey of 2006, analyses of variance show the differences between these groups. Based on a representative survey (N = 4,530), the effects of gender (53.6% women), residency/migration (74.4% grown up in the West, 20.4% in the East, 5.3% migrants from the East to the West) from three generations (32% born until 1945, 39% until 1967, and 29% to 1989), and positive and negative mental health indicators were analyzed.

Results

Women reported higher distress and lower resilience. Residents of the Western states reported the lowest burden of distress (depressive and anxiety symptoms) and the highest overall life satisfaction, exceeding residents from the Eastern states and migrants from the Eastern to the Western states. Migrants from the Eastern to the Western states, however, reported the lowest resilience and self-esteem. They reported lower satisfaction with income, living conditions (compared to the Western residents), and the lowest levels of satisfaction with family (compared to East and West).

Conclusion

Overall, our data point to inequalities between the Eastern and Western states regarding mental health 16 years after reunification favoring the residents of the Western states by lower distress and life satisfaction. Our data attest to the stresses and adjustments associated with migration from the Eastern to the Western states before reunification. A lower level of mental health and life satisfaction in the oldest generation may be related to the sequelae of World War II and also to aging.

Trends in internal migration in Japan, 2012-2020: The impact of the COVID-19 pandemic

In the past 10 years or so, there have been growing concerns in Japan that migration trends, such as large in-migration to the Tokyo metropolitan area (TMA) at the national scale and large movements from the suburbs to the centres at the metropolitan scale, have widened the core-periphery disparities at each scale under national population decline. However, the COVID-19 pandemic led to unexpected changes in these migration patterns, such as a weakened population concentration in the TMA. This study aims to examine internal migration trends from 2012, on axes of core-periphery in Japan and centre-suburbs in metropolitan areas, and the changes in the migration patterns caused by the pandemic in 2020. First, we prepared intermunicipal origin-destination tables by estimating the suppressed flows in 2012-2020 using the iterative proportional fitting technique, and then we calculated the net migration and migration efficiency indices based on seven area types: centre and suburbs of the TMA, centres and suburbs of major metropolitan areas, centres and suburbs of other metropolitan areas and nonmetropolitan areas. The results indicate that the 2020 migration efficiency in the centre of the TMA drastically dropped to the lowest level during the study period, contrasting with an upward trend in 2012-2019. The pandemic strongly affected the migration patterns from/to and within the TMA, with much net gain in the suburbs from the centre, but the impact of migration efficiencies among the other areas was minimal. These findings can help in providing direction for the postpandemic policy challenge of spatial planning in Japan, for example, the weakened but still widening disparities between the TMA and the other regions and the renewed threat of urban sprawl caused by the increased migration from the centre to the suburbs within the TMA.

Provincial differentials of the effect of internal migration on teenage fertility in South Africa

This study investigated the association between internal migration and teenage fertility in South Africa. Data were from the 2007 and 2016 South African community surveys, N2007= 89800 and N2016=239733, age range 12 to 19, black teenagers= 81.5% and 89.4%, respectively. Results showed that between 2007 and 2016 internal migration levels decreased by 2% nationally, but increased for Gauteng, Western Cape and KwaZulu Natal provinces. Teenage fertility levels decreased in all provinces except the Northern Cape in the study period. In both years teenage fertility was observed at higher levels among girls that were older, heads of households, and who were in secondary schooling. Random-intercept multilevel binary logistic regression revealed that the risk of teenage fertility differed between more rural and urban provinces. In provinces that were predominantly rural the risk of teenage pregnancy increased as community-levels of internal migration increased while the risk decreased as internal migration increased in provinces that were predominantly urban. Findings suggest that the effects of internal migration on teenage pregnancy are largely dependent on the local context making it necessary to create interventions that are context-specific at sub-national levels.

Continuity or change? How the onset of COVID-19 affected internal migration in Australia

Despite anecdotal evidence of a COVID-19 induced decline in the intensity of interstate migration in Australia, population-level evidence is limited. The recent release of the 2020 wave of the Household, Income and Labour Dynamics in Australia (HILDA) Survey provides a unique opportunity to robustly assess the effect of the COVID-19 pandemic on the level, direction, determinants, and reasons for migration in Australia. By applying a series of regression models to individual-level longitudinal microdata, and measuring migration at a range of spatial scales, this paper shows that COVID-19 has somewhat accelerated the long-term decline in the intensity of internal migration-particularly for residential mobility, short-distance migration, and migration due to employment and involuntary reasons. The socio-demographic determinants of migration have remained broadly stable, despite a slight increase in the deterring effect of duration of residence and a reduction in the impact of education. Finally, we show that the increase in net migration gains in regional areas is underpinned by a decrease in outflows. Juxtaposing these results with aggregate-level migration statistics from the Australian Bureau of Statistics from 2021, we conclude that the effect of COVID-19 on internal migration to date has been minimal and is likely to be short-lived. However, it may still be too soon to make a definitive judgement, as shifts in work patterns stemming from the pandemic may further transform the level, direction, and composition of internal migration.

Unintentional injuries and risk behaviours of internal migrant children in southern China: A cross-sectional study

The purpose of this study was to estimate the prevalence of unintentional injuries and to identify factors mediating the risk of unintentional injuries among internal migrant children in southern China using self-reported data collected between April 2016 and March 2017. Logistic regression models were used to identify significant risk factors for unintentional injuries among the internal migrant children. The prevalence of self-reported unintentional injuries among internal migrant children in this study was 19.15%. Internal migrant children exhibiting antisocial (antisocial behaviour vs. no behaviour problems, OR = 2.162, 95% CI: 1.194-3.915, p = .011) and neurotic behaviours (neurotic behaviour vs. no behaviour problems, OR = 2.064, 95% CI: 1.098-3.880, p = .024) were more likely to report unintentional injuries. There was a positive correlation between the number of risk behaviours and the prevalence of unintentional injuries among non-migrant and internal migrant children. Children's behavioural problems were closely related to unintentional injuries and may be useful as predictors of unintentional injuries in children.

Heterogeneous Impact of Social Integration on the Health of Rural-to-Urban Migrants in China

BACKGROUND

While several studies have found that lower levels of social integration may lead to a deterioration in the health status of migrants, previous research on the nexus between social integration and health has generally ignored the potential endogeneity of social integration. This paper examines the heterogeneous impact of social integration on the health of rural-to-urban migrants in China by exploiting plausibly exogenous, long-term, geographic variation in dialectal diversity.

METHODS

Drawing on nationally representative data from the 2017 China Migrants Dynamic Survey (n = 117,446), we first regressed self-reported health on social integration using ordinary least squares estimation and then used an ordered probit model as a robustness check. Additionally, to rule out the potential endogeneity of social integration, we relied mainly on an instrumental variable approach and used dialectal diversity as a source of exogenous variation for social integration.

RESULTS

We found that social integration has a significant positive impact on rural-to-urban migrants' health. We also detected considerable heterogeneity in the effects of social integration across gender, generation, and wage levels: the health status of women, more recent generation migrants, and migrants with wages in the middle of wage distribution are more likely to be affected by social integration.

CONCLUSIONS

We confirmed the beneficial impact of social integration on migrants' health, which has some important policy implications. Successful migration policies should take the fundamental issue of migrants' social integration into account.

The impact of the COVID-19 pandemic on internal migration in Germany: A descriptive analysis

The COVID-19 pandemic has affected economies, labor markets, health care, education and tourism around the globe in unprecedented ways. However, little research has yet been devoted to the impact that the pandemic might have had on internal migration. This study aims to address this gap by determining how the intensity and spatial patterns of internal migration changed between 2019 and 2020 in Germany. We draw on data from the population register on annual flows between 401 counties. We find that the COVID-19 pandemic was associated with a 5% drop in the intensity of inter-county migration in 2020 compared to the previous year, with significant variation across age. The pandemic was also associated with an upsurge in net migration losses for the largest cities, driven by fewer inflows of young adults and continuing outflows of families.

The impact of the COVID-19 pandemic on internal migration in Germany: A descriptive analysis

The COVID-19 pandemic has affected economies, labor markets, health care, education and tourism around the globe in unprecedented ways. However, little research has yet been devoted to the impact that the pandemic might have had on internal migration. This study aims to address this gap by determining how the intensity and spatial patterns of internal migration changed between 2019 and 2020 in Germany. We draw on data from the population register on annual flows between 401 counties. We find that the COVID-19 pandemic was associated with a 5% drop in the intensity of inter-county migration in 2020 compared to the previous year, with significant variation across age. The pandemic was also associated with an upsurge in net migration losses for the largest cities, driven by fewer inflows of young adults and continuing outflows of families.

Understanding patterns of internal migration during the COVID-19 pandemic in Spain

Existing empirical work has analysed the impacts of COVID-19 on mortality, fertility and international migration. Less is known about the ways in which the COVID-19 pandemic has influenced the patterns of internal migration. Anecdotal reports of mass migration from large cities to less populated areas have emerged, but lack of data has prevented empirically assessing this hypothesis. Drawing on geographically granular administrative population register data, we aim to analyse the extent of change in the patterns of internal migration across the urban hierarchy in Spain during 2020. Our results show a decline of 2.5% in the number of internal migration moves, particularly during the early stages of the pandemic, returning to pre-pandemic levels in late 2020. Results also reveal unusually large net migration losses in core cities and net migration gains in rural areas. Net migration losses in cities and gains in rural areas particularly accumulated following the elimination of the strict lockdown measures in June. Yet, these net losses and gains trended to pre-pandemic levels in late 2020, and movements between cities, and between cities and suburbs, continued to dominate the internal migration system. Thus, while the COVID-19 pandemic exerted notable changes in the geographic balance of internal migration flows, these changes appear to have been temporary and did not significantly alter the existing structures of the national migration system.

Internal Migration and Depression Among Junior High School Students in China: A Comparison Between Migrant and Left-Behind Children

Using data from the China Education Panel Survey (CEPS), which was a nationally representative sample of junior high school students, this study examined the association of internal migration with depression among migrant and left-behind children, while exploring the moderating effect of gender difference and the mediating effects of social relationships. The results showed that migrant children had a significantly lower level of depression than left-behind children. Further, the difference in mental health between migrant children and left-behind children was more prominent for boys than girls. The mechanism analyses indicated that compared to left-behind children, internal migration positively predicted parent–child relationships and peer relationships of migrant children, which in turn reduced their depressive symptoms. Although migrant children suffered from a higher level of teacher discrimination than their left-behind counterparts, it had no significant relationship with depression after controlling for children’s social relationships with parents and peers. Our findings suggested that migrating with parents was helpful to reduce children’s depressive symptoms in comparison with being left behind. Therefore, actions should be implemented to reduce the occurrence of involuntary parent–child separation and the prevalence of children’s depressive disorders due to institutional constraints. In addition, necessary treatments are needed to improve the psychological wellbeing of disadvantaged children, especially among left-behind children with mental illness.

Understanding the multifaceted impact of COVID-19 on migrants in Kerala, India

Motivation

COVID-19 has disrupted the lives of millions of people worldwide. Migrants in developing economies have been among the most affected. This vulnerable population faces a threat to their livelihood and way of life. Hence, there is an urgent need to understand the impact of pandemic on their lives to be able to tackle subsequent waves of the pandemic or similar exogenous shocks in future.

Purpose

We delve into the economic and social disruptions caused by the COVID-19 pandemic on employment, sources of income, and lives of different categories of migrant labourers in the Indian state of Kerala.

Methods and approach

Using the livelihood portfolio theory, we dissect this impact in relation to a wide range of issues. This was corroborated by the in-depth semi-structured interviews with three categories of respondents. The interview data was analysed by using the directed qualitative content analysis method. We created themes from the data and juxtaposed them with the livelihood portfolio theory in addressing the research objectives.

Findings

Results highlight the impact on livelihood, lifestyles, migration prospects and gender aspects. First, the households dependent on international migrants were more severely affected than those with family members who were internal migrants. Second, a considerable lifestyle change (more reliance on a plant-based diet) and borrowing patterns (more reliance on informal money lending) was reported. Third, opinions on future migration prospects were pessimistic, and a trend in favour of reverse migration was noted. We also captured the resilience measures for each of the themes.

Policy implications

We find that blanket responses to mitigate migrants' hardships could be counterproductive. Policy-makers ought to implement tailor-made policies keeping in mind the migrants' classification and socio-economic demographics. Further, we recommend specific measures to address challenges that women face, to ease their workload and mitigate the loss of income. Specific measures aimed at initiating attitudinal change such as creating mental health awareness, curbing misinformation and providing counselling services could also add immense value in tackling the pandemic.

Moving towards the centre or the exit? Migration in population studies and in Population Studies 1996-2021

This paper examines the position of migration in population studies, focusing on the period 1996-2021. It considers the reasons why migration remains problematic for demographers, but also how approaches to migration have changed over the last 25 years. While it has arguably become more important to both demography and population studies because of the transition to low fertility and mortality, migration has metamorphosed into a complex field in its own right, almost independently from changes in demography. Both internal and international migration form the subject of this examination and four main themes are pursued: data and measurement; theories and approaches; migration and development; and migration and political demography. The papers published in the journal Population Studies are used to provide a mirror through which to view these changes over the last 25 years. This paper concludes by looking at likely future directions in migration studies, demography, and population studies.

New Destinations and the Changing Geography of Immigrant Incorporation

While nearly three decades of "new immigrant destination" research has vastly enriched our understanding of diversity in contexts of reception within the United States, there is a striking lack of consensus as to the implications of geographic dispersion for immigrant incorporation. We review the literature on new destinations as they relate to ongoing debates regarding spatial assimilation and segmented assimilation; the influence of co-ethnic communities on immigrant incorporation; and the extent to which growth in immigrant populations stimulates perceived threat, nativism, and reactive ethnicity. In each of these areas, the sheer diversity of new destinations undermines consensus about their impact. Coupled with the continuous evolution in immigrant destinations over time, most dramatically but not limited to the impact of the Great Recession, we argue for the need to move beyond the general concept of "new destinations" and focus more directly on identifying the precise mechanisms through which the local context of reception shapes immigrant incorporation, where the historical presence of co-ethnic communities is but one of many dimensions considered, together with other labor, housing, and educational structures.

Unmet Need for Family Planning after Internal Migration: Analysis of Ethiopia 2017-2018 PMA Survey Data

Internal migration's effect on family planning behavior depends upon migration circumstances. While many studies describe instability and displacement's effect on family planning access, fewer studies consider the positive association between internal migration and family planning behavior. Using Performance Monitoring for Action (PMA) survey data, we examine the relationship between internal migration and unmet need for family planning in Ethiopia from 2017-2018. We describe determinants of family planning behavior by migrant status and model migration's effect on unmet need for family planning using multilevel logistic regression. Internal migrants studied tend to be more educated and wealthier and have less unmet need than non-migrants, likely due to different fertility preferences and human capital. This contributes to existing research by illustrating how rural-urban migration in Ethiopia relates to family planning behaviour. Findings will be of interest to social scientists and policymakers evaluating family planning resource allocation to reduce unmet need in African contexts.

To Float or Not to Float? Internal Migration of Skilled Laborers in China

This paper uses data from job-recruiting platforms to study the distribution patterns and migration destination choices of a skilled internal migrant population. We find that, in most first-tier cities and most emerging second-tier cities, more than half of the skilled jobseekers do not hold local household registration. The most important finding of this paper is the heterogeneity of attributes prioritizations between intra- and inter- provincial migrants. Intra-provincial skilled migrants put more value on employment opportunities than on amenity attributes, while their inter-provincial counterparts prioritize amenity over employment aspects.

Geographic mobility among older people and their adult children: The role of parents' health issues and family ties

This research examines the relationship between older parents' health issues and (i) their relocations closer to their faraway adult children, (ii) their relocations into institutionalised care facilities, or (iii) having distant children move closer. Additionally, we investigate how these relocations are structured by children's gender and location. We focused on parents aged 80 years and older and their distant children. Multinomial logistic regression models were employed for older men and women based on data from administrative registers of Sweden. Whereas severe health problems were associated with an increased likelihood of parent relocations closer to their children or into institutions, they were not associated with the likelihood of children's moves towards parents. Mothers were more likely to move towards daughters or towards distant children who had at least one sibling living nearby. Children moved closer to their parents when there was at least one sibling living near the parent or in response to their own life circumstances.

Association Between Socioeconomic Factors and the COVID-19 Outbreak in the 39 Well-Developed Cities of China

Background: Socioeconomic factors play an indispensable role in the spread of emerging infectious diseases. Few studies have investigated the role of socioeconomic factors in the spread of COVID-19.

Methods: The number of COVID-19 cases in the 39 well-developed cities of China was aggregated by searching the publicly available sources. Socioeconomic indicators (e.g., population, population density, gross domestic product, rural-to-urban migrants, urbanization rate, per-person disposable income, and level of health care) in these cities were also aggregated from the Bureau of Statistics. The data referring to travelers from Wuhan were collected from the Baidu Migration database. A multiple stepwise linear regression model was performed to identify the independent risk factors of the number of cases.

Results: As of Mar 19, 2020, a total of 5,939 cases were reported in the 39 well-developed cities with almost half of total cases in China outside of Hubei. The number of cases ranged 20–576, and the median number of cases was 93 (IQR 54–180) in these cities. Nine socioeconomic variables including the number of travelers from Wuhan, population, native population, gross domestic product, Per-person GDP, the number of hospitals, the number of rural-to-urban migrants, traffic capacity, and person-disposable income were recognized as potential contributors of the number of cases. Results of multiple linear regression showed a statistically significant association between the number of cases and the number of travelers from Wuhan (t = 6.746, P = 0.000) and the number of rural-to-urban migrants (t = 3.776, P = 0.001) in these cities. However, other seven potential contributors were not associated with the number of cases. Moreover, a well-fitted multiple regression model was built in this study, and a regression equation was as follows: Y = 0.007X_t + 0.200X_m (adjusted R² = 0.833).

Conclusions: Travelers from Wuhan and rural-to-urban migrants were independently associated with the COVID-19 outbreak in the 39 well-developed cities of China. These findings suggested that travelers from an epicenter and rural-to-urban migrants should be paid more attention in the early stage of the COVID-19 outbreak in the well-developed cities.

India's Response to the COVID-19 Pandemic: A Frontal Assault on the "Historically Dispossessed"

During the nationwide lockdown as part of the state response to the COVID-19 pandemic, the predicament of interstate migrant laborers in India, caught in crowded cities without means of livelihood and basic resources needed to sustain life, gained national and international attention. This article explores the context of the current migrant crisis through the historical trajectories and political roots of internal migration in India and its relationship with the urban informal labor market and the structural determinants of precarious employment. We argue that the both the response to the pandemic and the disproportionate impact on migrant laborers are reflections and consequences of an established pattern of neglect and poor accountability of the state toward the employment and living conditions of migrant workers who toil precariously in the informal labor market.

Internal Migration and the Health of Middle-Aged and Older Persons in China: The Healthy Migrant Effect Reconsidered

This study investigates associations between internal migration and health among middle-aged and older adults in China, including variations associated with type of migration (rural-to-urban, urban-to-rural, rural-to-rural, urban-to-urban). Data were drawn from China's Health and Retirement Longitudinal Study (2011, 2013, 2015). Lagged panel and fixed-effect regression models address associations between migration and health outcomes (self-rated health, depression) while controlling for pre-migration and post-migration selection effects. The results reveal the positive implications of rural-to-urban migration for the self-rated health of middle-aged but not older adults. They also point to the positive effects of migration within and to rural areas for the self-rated and mental health of older adults. Overall, although migration may be beneficial to the health of internal migrants in China, complexities associated with age, type of migration, and the health outcome involved need to be taken into account.

Migration for family and labour market outcomes in Sweden

Using information on stated motives for migrating among working-age individuals in the 2007 Swedish Motives for Migration survey (N = 1,852), we use multinomial logistic regression to examine whether and how moves for family reasons are linked to labour market outcomes in ways that differ from migration initiated for other motives, including more overtly labour-related factors. The results indicate that family-based migration is associated with worse labour market outcomes than migration for employment or other reasons. Additionally, family-motivated migrants with co-resident children are more likely to experience labour market deterioration than those without children. Among those who were unemployed before moving, those who reported family as a motive for moving were significantly more likely to be employed after the move. These results help us better assess how families and social networks impact economic outcomes-negatively in some circumstances and positively in others.

"Dirty like a Tenant": Migration and Embodied Dispositions in Malawi

Much has been written about how structural (e.g. colonialism) and social (e.g. gender) determinants shape embodied health outcomes. However, little attention has been paid to the ways that marginalized populations become complicit in their own oppression. Ethnographic data collected over two years at a rural public hospital in Malawi show that the tobacco political economy produces significant intra-rural inequalities that result in the exclusion of migrant farm workers, called "tenants," from HIV care. Using an analytical framework informed by Bourdieu's concepts of social field and habitus, I illustrate how social inequalities persist unchallenged, even by the most disadvantaged people.

Lethal Violence and Migration in Mexico: An Analysis of Internal and International Moves

We analyze the effect of homicide in Mexico on patterns and processes of internal and international migration. Linking municipal-level homicide rates from 1990 through 2018 with data from the Mexican Migration Project, we estimate a series of multinomial discrete time event history models to assess the effect that exposure to lethal violence has on the likelihood of migration within Mexico and to the United States without documents. Statistical estimates indicate that the homicide rate negatively predicts the likelihood of taking a first undocumented trip to the United States but positively predicts the likelihood of taking a first trip within Mexico. Among those undocumented migrants who have already taken a first U.S. trip, lethal violence also negatively predicts the likelihood of taking a second undocumented trip. Among returned internal migrants whose first trip was to a Mexican destination, the odds of taking a first U.S. trip were also negatively predicted by the municipal homicide rate. We conclude that rising violence in Mexico is not a significant driver of undocumented migration to the United States. Instead it contributes to the decline in undocumented out-migration observed since 2007, in combination with the rising age of those at risk of migration and the growing access of Mexicans to legal entry visas.

From rural to urban living - migration from Sami core areas to cities in Norway. Study design and sample characteristics

The Indigenous Sami population have inhabited rural northern areas of Norway, Sweden, Finland and the Kola Peninsula in Russia for thousands of years. Today, many Sami live in cities. No large quantitative studies have investigated the health and life of urban Sami in Norway. As a basis for further research, this paper describes the background, methods, participation and sample characteristics of the survey From Rural to Urban Living, conducted in 2014. The unique sampling design is based on internal migration records. Those invited were everyone born 1950-1975 who had relocated from preselected rural Sami core areas to cities in Norway. Their children above the age of 18 were also invited. The paper is descriptive with some basic statistical tests. In total, 2058 (response rate 34%) first-generation and 1168 (response rate 19%) second-generation migrants responded. The response rate was lowest in the younger age groups and among men. One out of three reported Sami background. The education level was in general high. From Rural to Urban Living enables numerous research possibilities within health and social sciences, and may contribute to new insight into the health, culture and identity of the growing Sami population in urban areas of Norway.

Unequal Opportunity? Racial, Ethnic, and Gender Disparities in the Returns to Internal U.S. Migration

Internal U.S. migration plays an important role in increasing individuals' access to economic and social opportunities. At the same time, race, ethnicity, and gender have frequently shaped the opportunities and obstacles individuals face. It is therefore likely that the returns to internal migration are also shaped by race, ethnicity, and gender, though we have relatively little knowledge of whether this is the case for contemporary internal U.S. migration. To explore this possibility, I use restricted, geocoded National Longitudinal Survey of Youth 1979 data from 1979 to 2012. I find that white men gain the most economically from migrating, relative to black and Latino men. For women, migration is associated with stable or narrower racial and ethnic disparities in economic outcomes, with Latina women experiencing the largest economic benefits associated with migration and with black and white women exhibiting comparable economic returns to migration. Together, these findings indicate that migration may maintain or even narrow racial/ethnic disparities in economic outcomes among women, but widen them among men.

Distribution of child health indicators according to internal migration and various social variables in Turkey

INTRODUCTION

Birth weight, stunting and overweight/obesity of children are among the most important child health indicators that cause concerns all over the world. Based on international literature findings, birth weight, stunting and overweight/obesity of children may differ according to the various sociodemographic and socioeconomic factors. In addition, migration status of women and their children (within urban areas, within rural areas, urban to rural and rural to urban) may influence the birth outcomes and health status of children aged less than 5 years. The aim of this study is to determine the distribution of internal migration and the sociodemographic and socioeconomic factors on birth weight, stunting and overweight/obesity in children aged less than 5 years in Turkey. Another purpose of this study is to investigate the course of birth weight, stunting and overweight/obesity in children between 1993 and 2013 in Turkey.

METHODS

The source of data for this study was the nationally representative five Turkey Demographic and Health Surveys (1993, 1998, 2003, 2008, 2013 TNSA). Surveys were conducted by Hacettepe University Institute of Population Studies. Logistic regression analysis was used in order to determine the impact of migration status, sociodemographic and socioeconomic factors on birth weight, stunting and overweight/obesity of children.

RESULTS

Compared to children living in urban areas, inadequate birth weight was found to be higher in children living in rual areas and in children who had migrated from urban areas to rural areas. Stunting was found to be higher in rural areas and urban to rural areas compared to urban areas. Unlike birth weight and stunting in children, overweight/obesity was higher in children living in urban areas compared to children living in rural areas. Moreover, it was revealed that sociodemographic factors (maternal education, birth order, receiving prenatal care, age, gender) and socioeconomic factors (residential area and childhood residential area) affected the birth weight, stunting and overweight/obesity of children in this study.

CONCLUSION

There is a need for policymakers to take steps to overcome the regional disparities that create disadvantages for children aged less than 5 years in disadvantaged areas.

Do the most successful migrants emulate natives in well-being? The compound effect of geographical and social mobility

A growing body of research has been focusing on the well-being consequences of migration, yet most of this has overlooked the fact that many migrants experience intragenerational social mobility alongside geographical mobility. Without accounting for the effect of social mobility in working life, the impact of geographical mobility on well-being cannot be clearly examined. This paper focuses on the most successful migrants, who have started from the bottom and have achieved upward social mobility in the course of their careers, and compares their well-being with that of native non-migrants who have experienced a similar intragenerational social mobility trajectory. The analysis is based on a recent national survey in China, which has a representative sample for both the overall population and migrants. Findings show that migrants, whether from an urban or rural origin, have better incomes but significantly lower levels of well-being than natives, even with a similar career advancement trajectory and the same destination class position. Further exploration shows that the well-being disadvantage of migrants is mainly due to institutional and sociocultural barriers, rather than to reward differentials in the labour market. This may have a wider implication for migrants across national borders.

Selectivity and Internal Migration: A Study of Refugees' Dispersal Policy in Sweden

Following the intensified waves of refugees entering Europe, dispersal policies for newly arrived refugees have been proposed to speed up their integration and to share the financial burden across and within the EU countries. The effectiveness of dispersal policies depends, among other factors, on the extent to which refugees tend to stay in the initial location they are assigned to live in, and on their patterns of self-selectivity during subsequent moves of internal migration. Economic theories of migration suggest that economic immigrants are self-selected to destinations based on their abilities. Highly skilled and motivated people tend to migrate to labor markets with broader opportunity structures, while less capable individuals choose markets that are more sheltered. We use a quasi-experimental design to examine the extent to which those theories are first, applicable to refugees as well, and second, explain their self-sorting into local labor markets at destination. We focus on a refugee cohort that came to Sweden during the period when the so-called "Whole-Sweden" policy was in effect. This policy was designed to reduce the concentration of refugees in the larger cities by randomly deploying asylum seekers across Sweden. After being assigned to an initial location, refugees could move freely within Sweden. We use individual register data from Statistics Sweden to study all refugees who arrived in Sweden during 1990-1993, and we follow each one of them during an 8-year period. We use discrete-time survival analysis (complementary log-log models) in order to assess the effects of abilities on the destination choices of refugees, and individual fixed-effect models to assess the effects of internal migration on their income. Destinations were defined on the basis of the economic opportunities they offer. The results suggest that refugees' education levels are related to major differences in their destination choices. Highly skilled refugees were more likely to migrate to labor markets with a wide structure of opportunities relative to less skilled refugees. In addition, all relocation choices had positive effects on refugees' income growth.

Employment, education, and family: Revealing the motives behind internal migration in Great Britain

Distinctions between internal migration and residential mobility are often formed with reference to assumed differences in motivation, with migration typically linked to employment and educational motives and shorter distance mobility to housing and family. Using geocoded microdata, this article reveals how employment-led migration represents only a minority share (≈30%) of total migration events over 40 km. Family motives appear just as important, even at distances ≥100 km, with the desire to live closer to non-resident family/friends being the most frequently cited family submotive. Estimated propensities to undertake employment and educational-related migration fit very closely to predictions of human capital models of migration, being highest among young, residentially flexible and highly educated individuals. Migrants citing family-related motives are disproportionately drawn from midlife and later-life phases, with family shown to be a key motive among migrants with care-related needs (e.g., parents with children) or access to fewer resources (e.g., social renters and low educational attainment).

Is migration in later life good for wellbeing? A longitudinal study of ageing and selectivity of internal migration

Migration scholarship has recently paid attention to lifecourse and non-economic effects of moving house. Yet consideration of the effects of internal migration in later life has been relatively neglected despite their implications for social and spatial inequalities. Thus we address two questions: how trajectories of wellbeing in later life vary for movers and non-movers, and how the event of moving affects wellbeing. In both cases we distinguish between "voluntary" and "involuntary" movers. We use 10 years (2002-2012) of the English Longitudinal Study of Ageing (ELSA) to analyse trends in wellbeing for age cohorts and to examine how wellbeing changes through the event of moving. The Control, Autonomy, Selfrealisation and Pleasure (CASP-19) measure of wellbeing is used. We find that, after controls for demographic and socio-economic characteristics, involuntary movers have lower levels of wellbeing than stayers or voluntary movers; and involuntary movers experience a stabilisation in the decline in wellbeing following migration which is not seen for voluntary movers. So, migration in later life is good for wellbeing, maintaining advantageous wellbeing trajectories for voluntary movers and improving wellbeing trajectories for involuntary movers. These findings imply a rich potential of ELSA and similar longitudinal datasets for examining residential mobility; the need for ageing inequalities studies to take more account of residential mobility; the need for internal migration scholarship to pay greater attention to reason for move; and for policy to consider the potentially beneficial effects of residential mobility in later life, particularly for those in adverse circumstances.

Migration Status and Smoking Behaviors in Later-Life in China-Evidence From the China Health and Retirement Longitudinal Study (CHARLS)

Background: China is the biggest consumer of tobacco in the world, with a high prevalence of smoking especially among men. Along with the rapid demographic change in China, the burden of diseases attributable to health behaviors, particularly smoking is steadily increasing. So, smoking has become a major risk factor for mortality in China. Smoking behaviors may be related to migration processes, as a result of both who migrates and post-migration experiences related to socioeconomic position, stress and acculturation. Existing studies that have examined smoking and migration in China have, however, only focused on temporary rural-to-urban migrants and focused on relatively younger migrants. This paper examines the association between smoking behaviors and a comprehensive assessment of migration status in later-life in China.

Methods: Using the China Health and Retirement Longitudinal Study (CHARLS), a nationally representative dataset, this paper studies smoking behaviors of rural-to-urban migrants, urban-to-urban migrants, rural return migrants, and urban return migrants. We compare them with corresponding non-migrant groups in both rural and urban locations in China. Using a model that controls for demographic factors, early-life circumstances, socioeconomic factors, and factors related to migration, we examine both the decision to start smoking and the decision to quit smoking. In addition, we also address pre-migration selection in our analyses.

Results: The results show rural-to-urban migrants are no more likely to start smoking compared with rural non-migrants, but they are more likely to quit smoking. While urban-to-urban migrants are more likely to start smoking compared with urban non-migrants, this effect is explained by the factors we include in the full model. Urban-to-urban migrants are, however, less likely to quit smoking. Moreover, both rural return migrants and urban return migrants seem to be more likely to start smoking and less likely to quit smoking compared with non-migrant groups.

Conclusion: There are strong associations between migration status and later-life smoking behaviors in China; these associations vary greatly according to different migration status and point to populations and factors that public health activities should focus on.

Migration, Mobility, and Neighborhood Attainment: Using the PSID to Understand the Processes of Racial Stratification

In this article we describe the considerable influence of the Panel Study of Income Dynamics (PSID) on research on residential migration, mobility, and neighborhood attainment, as well as the role of PSID-based research in housing policy debates. We review some of the central research findings and key discoveries that have come from analyses that have used the PSID. We then present new research, using PSID data that are linked to geographic data, to demonstrate how geographic moves are associated with changes in neighborhood poverty rates. The relationship differs markedly for blacks and whites, and our results add to a body of work that shows sharp racial differences in residential context, and the role that personal migration plays in shaping this stratification. Finally, we use these findings and the shortcomings of past research to prescribe ways that the PSID could be enhanced to understand more about migration dynamics and processes of residential stratification.

Using linked administrative and census data for migration research

Migration is a core component of population change and is both a symptom and a cause of major economic and social phenomena. However, data limitations mean that gaps remain in our understanding of the patterns and processes of mobility. This is particularly the case for internal migration, which remains under-researched, despite being quantitatively much more significant than international migration. Using the Scottish Longitudinal Study, this paper evaluates the potential value of General Practitioner administrative health data from the National Health Service that can be linked into census-based longitudinal studies for advancing migration research. Issues relating to data quality are considered and, using the illustrative example of internal migration by country of birth, an argument is developed contending that such approaches can offer novel ways of comprehending internal migration, by shedding additional light on the nature of both movers and the moves that they make.

Internal migration and regional differences of population aging: An empirical study of 287 cities in China

In addition to birth and death, migration is also an important factor that determines the level of population aging in different regions, especially under the current context of low fertility and low mortality in China. Drawing upon data from the fifth and sixth national population census of 287 prefecture-level cities in China, this study explored the spatial patterns of population aging and its trends from 2000 to 2010 in China. We further examined how the large-scale internal migration was related to the spatial differences and the changes of aging by using multivariate quantitative models. Findings showed that the percentage of elder cities (i.e. proportion of individuals aged 65 and above to total population is higher than 7%) increased from 50% to 90% in the total 287 cities within the decade. We also found that regional imbalances of population aging have changed since 2000 in China. The gap of aging level between East zone and the other three zones (i.e. West, Central, and North-east) has considerably narrowed down. In 2000, Eastern region had the greatest number (65) of and the largest proportion (74.7%) of elder cities among all four regions. By 2010, the proportion (87.4%) of elder cities in the eastern region was slightly lower than Central (91.4%), Western (88.2%) and North-east sectors (91.2%). Results from multivariate quantitative models showed that the regional differences of population aging appear to be affected much more by the large-scale internal migration with clear age selectivity and orientation preference than by the impact of fertility and mortality. Population aging is expected to continue in China, which will in turn exacerbate regional imbalances. Policies and implications are discussed to face the challenges that the divergent aging population may present in China.

Rural-to-Urban Migration, Strain, and Juvenile Delinquency: A Study of Eighth-Grade Students in Guangzhou, China

This examination of minor and serious delinquency among eighth graders in a large southern Chinese city, Guangzhou, also compared groups of these students, observing differences between the delinquency of migrants and that of urban natives. Data used were originally collected for the study "Stuck in the City: Migration and Delinquency Among Migrant Adolescents in Guangzhou." The present study asked whether and how various sources of strain and social control factors explained students' delinquency, questioning how meaningfully migration status moderated several of the observed delinquency relationships. Of students in the sample, 741 reported being natives of Guangzhou, and 497 reported migrating to Guangzhou from a rural area. The study conceptualized internal migration as a strain factor leading to delinquency, but the analyses did not suggest direct association between internal migration and delinquency. Results generally supported Agnew's theory, and, what's more, they tended to confirm that migration status moderated juvenile delinquency.

How is internal migration reshaping metropolitan populations in Latin America? A new method and new evidence

Internal migration is a key driver of patterns of human settlement and socio-economic development, but little is known about its compositional impacts. Exploiting the wide availability of census data, we propose a method to quantify the internal migration impacts on local population structures, and estimate these impacts for eight large Latin American cities. We show that internal migration generally had small feminizing, downgrading educational, and demographic window effects: reducing the local sex ratio, lowering the average years of schooling, and raising the share of working-age population due to an increased young adult population. Over time, a rise in the proportion of males and a drop in the share of the young adult population moving into cities reduced the feminizing and demographic window effects. Concurrently, a rise in the average years of schooling associated with people moving into cities attenuated the downgrading impact of internal migration on local education levels.

Levels and patterns of internal migration in Europe: A cohort perspective

Europe displays important variations in the level of internal migration, with a clear spatial gradient of high mobility in northern and western Europe but lower mobility in the south and east. However, cross-national variation in levels of internal migration remains poorly understood, because it is analysed almost exclusively using cross-sectional data and period measures. This paper seeks to advance understanding of cross-national variation in migration levels in 14 European countries by drawing on a recently proposed suite of migration cohort measures, coupled with internationally comparable retrospective residential histories. It shows that differences in migration levels are mainly attributable to variation in the extent of repeat movement, which is underpinned by the differences in mean ages at first and last move that together delineate the average length of migration careers. Cohort analysis provides a robust foundation for exploring the demographic mechanisms underpinning variation in migration levels across countries and over time.

Rural to urban migration is associated with increased prevalence of childhood wheeze in a Latin-American city

Introduction

The urbanisation process has been associated with increases in asthma prevalence in urban and rural areas of low-income and middle-income countries (LMICs). However, although rural to urban migration and migration between cities are considered important determinants of this process, few studies have evaluated the effects of internal migration on asthma in urban populations of LMICs. The present study evaluated the effects of internal migration on the prevalence of wheeze in an urban area of Latin America.

Methods

We did a cross-sectional analysis of 2510 schoolchildren living in the city of Esmeraldas, Ecuador. Logistic regression was used to analyse associations between childhood wheeze and different aspects of migration among schoolchildren.

Results

31% of schoolchildren were migrants. Rural to urban migrants had a higher prevalence of wheeze, (adj.OR=2.01,95% CI1.30 to 3.01, p=0.001) compared with non-migrants. Age of migration and time since migration were associated with wheeze only for rural to urban migrants but not for urban to urban migrants. Children who had migrated after 3 years of age had a greater risk of wheeze (OR 2.51, 95% CI 1.56 to 3.97, p=0.001) than non-migrants while migrants with less than 5 years living in the new residence had a higher prevalence of wheeze than non-migrants (<3 years: OR=2.34, 95% CI 1.26 to 4.33, p<0.007 and 3–5 years: OR=3.03, 95% CI 1.49 to 6.15, p<0.002).

Conclusions

Our study provides evidence that rural to urban migration is associated with an increase in the prevalence of wheeze among schoolchildren living in a Latin-American city. Age of migration and time since migration were important determinants of wheeze only among migrants from rural areas. A better understanding of the social and environmental effects of internal migration could improve our understanding of the causes of the increase in asthma and differences in prevalence between urban and rural populations.

Climate shocks and rural-urban migration in Mexico: Exploring nonlinearities and thresholds

Adverse climatic conditions may differentially drive human migration patterns between rural and urban areas, with implications for changes in population composition and density, access to infrastructure and resources, and the delivery of essential goods and services. However, there is little empirical evidence to support this notion. In this study, we investigate the relationship between climate shocks and migration between rural and urban areas within Mexico. We combine individual records from the 2000 and 2010 Mexican censuses (n=683,518) with high-resolution climate data from Terra Populus that are linked to census data at the municipality level (n=2,321). We measure climate shocks as monthly deviation from a 30-year (1961-1990) long-term climate normal period, and uncover important nonlinearities using quadratic and cubic specifications. Satellite-based measures of urban extents allow us to classify migrant-sending and migrant-receiving municipalities as rural or urban to examine four internal migration patterns: rural-urban, rural-rural, urban-urban, and urban-rural. Among our key findings, results from multilevel models reveal that each additional drought month increases the odds of rural-urban migration by 3.6%. In contrast, the relationship between heat months and rural-urban migration is nonlinear. After a threshold of ~34 heat months is surpassed, the relationship between heat months and rural-urban migration becomes positive and progressively increases in strength. Policy and programmatic interventions may therefore reduce climate induced rural-urban migration in Mexico through rural climate change adaptation initiatives, while also assisting rural migrants in finding employment and housing in urban areas to offset population impacts.

Prevalence and Associated Factors of Secondhand Smoke Exposure among Internal Chinese Migrant Women of Reproductive Age: Evidence from China's Labor-Force Dynamic Survey

Secondhand smoke (SHS) is a major risk factor for poor health outcomes among women in China, where proportionately few women smoke. This is especially the case as it pertains to women’s reproductive health, specifically migrant women who are exposed to SHS more than the population at large. There are several factors which may increase migrant women’s risk of SHS exposure. This paper aims to investigate the prevalence and associated factors of SHS exposure among internal Chinese migrant women of reproductive age. The data used were derived from the 2014 Chinese Labor Dynamic Survey, a national representative panel survey. The age-adjusted rate of SHS exposure of women of reproductive age with migration experience was of 43.46% (95% CI: 40.73%–46.40%), higher than those without migration experience (35.28% (95% CI: 33.66%–36.97%)). Multivariate analysis showed that participants with a marital status of “Widowed” had statistically lower exposure rates, while those with a status of “Cohabitation” had statistically higher exposure. Those with an undergraduate degree or above had statistically lower SHS exposure. Those with increasing levels of social support, and those who currently smoke or drink alcohol, had statistically higher SHS exposure. Participants’ different work-places had an effect on their SHS exposure, with outdoor workers statistically more exposed. Our findings suggest that urgent tobacco control measures should be taken to reduce smoking prevalence and SHS exposure. Specific attention should be paid to protecting migrant women of reproductive age from SHS.