Demographic change and urban health: Towards a novel agenda for delivering sustainable and healthy cities for all

The focus is on the demographic drivers and demographic implications of urban health and wellbeing in towns and cities across the globe. The aim is to identify key linkages between demographic change and urban health - subjects of two largely disparate fields of research and practice - with a view to informing arguments and advocacy for urban health while identifying research gaps and priorities. The core arguments are threefold. First, urban health advocates should express a globalized perspective on demographic processes, encompassing age-structural shifts in addition to population growth and decrease, and acknowledging their uneven spatial distributions within and between urban settings in different contexts. Second, advocates should recognize the dynamic and transformational effects that demographic forces will exert on economic and political systems in all urban settings. While demographic forces underpin the production of (intra)urban inequities in health, they also present opportunities to address those inequities. Third, a demographic perspective may help to extend urban health thinking and intervention beyond a biomedical model of disease, highlighting the need for a multi-generational view of the changing societal bases for urban health, and enjoining significant advances in how interested parties collect, manage, analyse, and use demographic data. Accordingly, opportunities are identified to increase the availability of granular and accurate data to enable evidence-informed action on the demographic/health nexus.

Urban Family Planning in Sub-Saharan Africa: an Illustration of the Cross-sectoral Challenges of Urban Health

The multi-sectoral nature of urban health is a particular challenge, which urban family planning in sub-Saharan Africa illustrates well. Rapid urbanisation, mainly due to natural population increase in cities rather than rural-urban migration, coincides with a large unmet urban need for contraception, especially in informal settlements. These two phenomena mean urban family planning merits more attention. To what extent are the family planning and urban development sectors working together on this? Policy document analysis and stakeholder interviews from both the family planning and urban development sectors, across eight sub-Saharan African countries, show how cross-sectoral barriers can stymie efforts but also identify some points of connection which can be built upon. Differing historical, political, and policy landscapes means that entry points to promote urban family planning have to be tailored to the context. Such entry points can include infant and child health, female education and employment, and urban poverty reduction. Successful cross-sectoral advocacy for urban family planning requires not just solid evidence, but also internal consensus and external advocacy: FP actors must consensually frame the issue per local preoccupations, and then communicate the resulting key messages in concerted and targeted fashion. More broadly, success also requires that the environment be made conducive to cross-sectoral action, for example through clear requirements in the planning processes' guidelines, structures with focal persons across sectors, and accountability for stakeholders who must make cross-sectoral action a reality.

Urban Family Planning in Low- and Middle-Income Countries: A Critical Scoping Review

Health agendas for low- and middle-income countries (LMICs) should embrace and afford greater priority to urban family planning to help achieve a number of the global Sustainable Development Goals. The urgency of doing so is heightened by emerging evidence of urban fertility stalls and reversals in some sub-Saharan African contexts as well as the significance of natural increase over migration in driving rapid urban growth. Moreover, there is new evidence from evaluations of large programmatic interventions focused on urban family planning that suggest ways to inform future programmes and policies that are adapted to local contexts. We present the key dimensions and challenges of urban growth in LMICs, offer a critical scoping review of recent research findings on urban family planning and fertility dynamics, and highlight priorities for future research.

Health literacy and the social determinants of health: a qualitative model from adult learners

Summary

Health literacy, ‘the personal characteristics and social resources needed for individuals and communities to access, understand, appraise and use information and services to make decisions about health’, is key to improving peoples’ control over modifiable social determinants of health (SDH). This study listened to adult learners to understand their perspectives on gathering, understanding and using information for health. This qualitative project recruited participants from community skills courses to identify relevant ‘health information’ factors. Subsequently different learners put these together to develop a model of their ‘Journey to health’. Twenty-seven participants were recruited; twenty from community health literacy courses and seven from an adult basic literacy and numeracy course. Participants described health as a ‘journey’ starting from an individual's family, ethnicity and culture. Basic (functional) health literacy skills were needed to gather and understand information. More complex interactive health literacy skills were needed to evaluate the importance and relevance of information in context, and make health decisions. Critical health literacy skills could be used to adapt negative external factors that might inhibit health-promotion. Our model is an iterative linear one moving from ethnicity, community and culture, through lifestyle, to health, with learning revisited in the context of different sources of support. It builds on existing models by highlighting the importance of SDH in the translation of new health knowledge into healthy behaviours, and the importance of health literacy in enabling people to overcome barriers to health.

Engaging anthropology in urban health research: issues and prospects

Urbanisation remains a challenge in the new millennium and will continue to have important implications for human health. This leads to lively debates in the field of international health, but with minimal engagement of anthropology. To stimulate active involvement, our paper highlights main issues addressed in this special issue and maps directions for future research. Our collection of papers addresses hot topics in urban health research, ranging from everyday health practice to mental health, chronic and degenerative illness, old age and social safety networks, and examines them from a complementary, anthropological perspective. Most priority concerns refer to four core issues commonly considered as characteris tics of urban life, namely, levels of environmental hazards, commodification, social fragmen tation and health service provision. We thus advocate for fresh perspectives, moving from a medical anthropology to a health anthropology, and from risk approaches to frameworks centring on affliction, vulnerability and resilience. Future research should concentrate on comparisons and longitudinal design to sharpen key distinctions, e.g. between rural, peri-urban and urban, use dynamics, diversity and complexity as analytical frameworks and investigate emerging issues like trust and care. With an active engagement in and commitment to urban health research, anthropology can enhance conceptual clarity and contribute to locally relevant public health actions.

Using behavior change to reduce child lead exposure in resource-poor settings: a formative study

The objective of this formative research was to explore the acceptability and feasibility of changing housekeeping behaviors as a low-cost approach that may reduce childhood lead exposure in Johannesburg, South Africa. Using the Trials of Improved Practices (TIPs) methodology, modified housekeeping behaviors were negotiated with participants who chose the behaviors they wanted to try and then performed them in their homes over 4 weeks. Researchers interviewed them at the end of the month to understand their experience of trying out the behaviors. The modified behaviors offered to each participant were as follows: cleaning window sills with detergent and water, cleaning window sills more frequently, mopping floors with two buckets (one with soapy water for washing and one with clean water for rinsing), mopping floors more frequently, dusting surfaces with detergent and water and dusting surfaces more frequently. Participants found cleaning window sills with soap and water and cleaning them more often the most acceptable and feasible of behavior modifications. Environmental samples showed a significant reduction in lead dust on window sills. These findings can assist in the development of acceptable and feasible medium-term interventions to reduce childhood lead exposure in resource-poor settings until more robust health policies are implemented.

Community-based participatory research in complex settings: clean mind-dirty hands

Despite the abundance of the literature which discusses factors supporting or inhibiting effective participation of community members in community-based research, there is a paucity of publications analysing challenges to participation in complex settings. This manuscript describes an intervention built on researcher-community partnership amid complex social conditions which challenged participation of community members at different stages of the research process. The research took place in a Palestinian refugee camp in Beirut, Lebanon and 1 of 12 in Lebanon which suffer from deteriorating social, economic and physical conditions perpetuated by state-imposed restrictions. The research team developed a community coalition which was involved in all stages of planning, designing, implementation and dissemination. In all those stages the aim was to maintain rigorous research, to follow a 'clean mind' approach to research, but maintain principles of community participation which necessitate 'a dirty hand'. Despite commitment to the principles of community-based participatory research, participation of community members (including youth, parents and teachers) was affected to a great extent by the social, physical and structural conditions of the community context. Characteristics of the context where research is conducted and how it affects community members should not be overlooked since multiple factors beyond the researchers' control could interfere with the rigour of scientific research. Researchers need to develop a plan for participation with the community from the beginning with an understanding of the community forces that affect meaningful participation and address possible deterrence.

Rural-Urban Migration and Experience of Childhood Abuse in the Young Thai Population

Evidence suggests that certain migrant populations are at increased risk of abusive behaviors. It is unclear whether this may also apply to Thai rural-urban migrants, who may experience higher levels of psychosocial adversities than the population at large. The study aims to examine the association between migration status and the history of childhood sexual, physical, and emotional abuse among young Thai people in an urban community. A population-based cross-sectional survey was conducted in Northern Bangkok on a representative sample of 1052 young residents, aged 16-25 years. Data were obtained concerning: 1) exposures-migration (defined as an occasion when a young person, born in a more rural area moves for the first time into Greater Bangkok) and age at migration. 2) outcomes-child abuse experiences were assessed with an anonymous self report adapted from the Conflict Tactics Scales (CTS). There were 8.4%. 16.6% and 56.0% reporting sexual, physical, and emotional abuse, respectively. Forty six percent of adolescents had migrated from rural areas to Bangkok, mostly independently at the age of 15 or after to seek work. Although there were trends towards higher prevalences of the three categories of abuse among early migrants, who moved to Bangkok before the age of 15, being early migrants was independently associated with experiences of physical abuse (OR 1.9 95%CI 1.1-3.2) and emotional abuse (OR 2.0, 95%CI 1.3-3.0) only. Our results suggest that rural-urban migration at an early age may place children at higher risk of physical and emotional abuse. This may have policy implications for the prevention of childhood abuse particularly among young people on the move.

Roundtable on Urban Living Environment Research (RULER)

For 18 months in 2009-2010, the Rockefeller Foundation provided support to establish the Roundtable on Urban Living Environment Research (RULER). Composed of leading experts in population health measurement from a variety of disciplines, sectors, and continents, RULER met for the purpose of reviewing existing methods of measurement for urban health in the context of recent reports from UN agencies on health inequities in urban settings. The audience for this report was identified as international, national, and local governing bodies; civil society; and donor agencies. The goal of the report was to identify gaps in measurement that must be filled in order to assess and evaluate population health in urban settings, especially in informal settlements (or slums) in low- and middle-income countries. Care must be taken to integrate recommendations with existing platforms (e.g., Health Metrics Network, the Institute for Health Metrics and Evaluation) that could incorporate, mature, and sustain efforts to address these gaps and promote effective data for healthy urban management. RULER noted that these existing platforms focus primarily on health outcomes and systems, mainly at the national level. Although substantial reviews of health outcomes and health service measures had been conducted elsewhere, such reviews covered these in an aggregate and perhaps misleading way. For example, some spatial aspects of health inequities, such as those pointed to in the 2008 report from the WHO's Commission on the Social Determinants of Health, received limited attention. If RULER were to focus on health inequities in the urban environment, access to disaggregated data was a priority. RULER observed that some urban health metrics were already available, if not always appreciated and utilized in ongoing efforts (e.g., census data with granular data on households, water, and sanitation but with little attention paid to the spatial dimensions of these data). Other less obvious elements had not exploited the gains realized in spatial measurement technology and techniques (e.g., defining geographic and social urban informal settlement boundaries, classification of population-based amenities and hazards, and innovative spatial measurement of local governance for health). In summary, the RULER team identified three major areas for enhancing measurement to motivate action for urban health-namely, disaggregation of geographic areas for intra-urban risk assessment and action, measures for both social environment and governance, and measures for a better understanding of the implications of the physical (e.g., climate) and built environment for health. The challenge of addressing these elements in resource-poor settings was acknowledged, as was the intensely political nature of urban health metrics. The RULER team went further to identify existing global health metrics structures that could serve as platforms for more granular metrics specific for urban settings.

Poor housing, good health: a comparison of formal and informal housing in Johannesburg, South Africa

OBJECTIVES

This study aimed to investigate the relationship between housing, demographic, socio-economic, social factors and health, in poor urban communities in Johannesburg, South Africa.

METHODS

Data were drawn from a survey of 1,427 households in Johannesburg. The outcome health variable was a composite measure of chronic ill-health. Housing variables included type of housing, tenure and access to services. Multivariate regression analysis assessed the relationship between housing and health, after adjustment for demographic, socio-economic and social factors.

RESULTS

The prevalence of chronic health problems was 25.1% (95% CI 22.8-27.6%). Factors independently associated with the risk of chronic ill-health among household heads included older age (OR, 3.06 [2.37-3.95]), female gender (OR, 2.83 [2.01-3.97]), long-term residence (OR, 2.01 [1.10-3.67]), unemployment (OR, 0.49 [0.36-0.67]), and living in formal housing (OR, 0.66 [0.45-0.98]).

CONCLUSIONS

The health of the household heads residing in informal housing was significantly better than in formal housing. Explanations for this counter-intuitive finding include the fact that the informal housing dwellers were younger and recent migrants (the 'healthy migrant' phenomenon). Policy implications of the results are identified.

Violence and social capital among young men in Beirut

BACKGROUND

Research on the links between violence and social capital has produced mixed results and is mainly limited to Western countries.

AIMS

To assess the relationship of social capital to physical fights among unmarried boys aged 13-19 years living in three disadvantaged neighbourhoods in the outskirts of Beirut, controlling for variables associated with youth violence. Lebanon has a history of civil and cross-border war, which may influence the production of violence at the individual level.

METHODS

674 boys were interviewed. The dependent variable was being involved in a physical fight in the last 3 months. The independent variable was social capital, classified into six categories: civic engagement and community development; locational capital; trust; reciprocity; hypothetical social support; and social network.

RESULTS

One fifth (20%) had been in a fight in the last 3 months. Youth who were members of a group, who had been victimised, who could ask for help from a family member/friend/neighbour when they had a problem, and who liked living in their neighbourhood were more likely to be involved in a fight.

CONCLUSION

This research supports the literature that indicates that physical fights are positively related to both individual and social capital variables. Social capital had a detrimental effect on physical fights. This may be related to bonding in a gang-like way. While high levels of social capital are good for other health outcomes and thus should not be reduced, interventions that channel youth energy in positive ways are needed.

Validation of the Arab Youth Mental Health scale as a screening tool for depression/anxiety in Lebanese children

BACKGROUND

Early detection of common mental disorders, such as depression and anxiety, among children and adolescents requires the use of validated, culturally sensitive, and developmentally appropriate screening instruments. The Arab region has a high proportion of youth, yet Arabic-language screening instruments for mental disorders among this age group are virtually absent.

METHODS

We carried out construct and clinical validation on the recently-developed Arab Youth Mental Health (AYMH) scale as a screening tool for depression/anxiety. The scale was administered with 10-14 year old children attending a social service center in Beirut, Lebanon (N = 153). The clinical assessment was conducted by a child and adolescent clinical psychiatrist employing the DSM IV criteria. We tested the scale's sensitivity, specificity, and internal consistency.

RESULTS

Scale scores were generally significantly associated with how participants responded to standard questions on health, mental health, and happiness, indicating good construct validity. The results revealed that the scale exhibited good internal consistency (Cronbach's alpha = 0.86) and specificity (79%). However, it exhibited moderate sensitivity for girls (71%) and poor sensitivity for boys (50%).

CONCLUSIONS

The AYMH scale is useful as a screening tool for general mental health states and a valid screening instrument for common mental disorders among girls. It is not a valid instrument for detecting depression and anxiety among boys in an Arab culture.

Environmental legislation and contamination: the gap between theory and reality in South Africa

Like many areas of its constitution, South Africa has progressive legislation to both prevent and clean up environmental contamination. However, recent research has highlighted a large gap between legislation and practice. This paper presents the context of the intent of environmental waste legislation in South Africa and highlights a case of mercury contamination in a rural area which illustrates the gap between the theory of legislation and the reality on the ground. Mercury contamination in humans poses well known health threats, yet despite attention from the media, non-governmental organisations and academic researchers, a major pollutant remains and contamination levels remain high, two decades after the original polluting incident took place.

Violence and post-traumatic stress disorder in Sao Paulo and Rio de Janeiro, Brazil: the protocol for an epidemiological and genetic survey

BACKGROUND

violence is a public health major concern, and it is associated with post-traumatic stress disorder and other psychiatric outcomes. Brazil is one of the most violent countries in the world, and has an extreme social inequality. Research on the association between violence and mental health may support public health policy and thus reduce the burden of disease attributable to violence. The main objectives of this project were: to study the association between violence and mental disorders in the Brazilian population; to estimate the prevalence rates of exposure to violence, post-traumatic stress disorder, common metal disorder, and alcohol hazardous use and dependence: and to identify contextual and individual factors, including genetic factors, associated with the outcomes.

METHODS/DESIGN

one phase cross-sectional survey carried out in Sao Paulo and Rio de Janeiro, Brazil. A multistage probability to size sampling scheme was performed in order to select the participants (3000 and 1500 respectively). The cities were stratified according to homicide rates, and in Sao Paulo the three most violent strata were oversampled. The measurements included exposure to traumatic events, psychiatric diagnoses (CIDI 2.1), contextual (homicide rates and social indicators), and individual factors, such as demographics, social capital, resilience, help seeking behaviours. The interviews were carried between June/2007 February/2008, by a team of lay interviewers. The statistical analyses will be weight-adjusted in order to take account of the design effects. Standardization will be used in order to compare the results between the two centres. Whole genome association analysis will be performed on the 1 million SNP (single nucleotide polymorphism) arrays, and additional association analysis will be performed on additional phenotypes. The Ethical Committee of the Federal University of Sao Paulo approved the study, and participants who matched diagnostic criteria have been offered a referral to outpatient clinics at the Federal University of Sao Paulo and Federal University of Rio de Janeiro.

Urban health in developing countries: what do we know and where do we go?

The world became mainly urban in 2007. It is thus timely to review the state of knowledge about urban health and the current priorities for research and action. This article considers both health determinants and outcomes in low-income urban areas of developing countries. The need to study urban health in a multi-level and multi-sectoral way is highlighted and priorities for research are identified. Interventions such as the Healthy Cities project are considered and obstacles to the effective implementation of urban health programmes are discussed. Concepts such as the double burden of ill health and the urban penalty are re-visited. Finally, a call for a shift from 'vulnerability' to 'resilience' is presented.

Rural-urban migration, illicit drug use and hazardous/harmful drinking in the young Thai population

AIMS

Limited data are available about whether rural-urban migration, often characterized by exposure to urban life stress and a reduction in social network and support, can affect the prevalence of illicit drug use and hazardous/harmful drinking. The purpose of our study was to examine the prevalence of these risky behaviours among Thai young adults and to describe their association between their migration status and these outcomes.

DESIGN

A population-based cross-sectional survey.

SETTING

A representative sample of 1052 residents, aged 16-25 years (467 males and 585 females) in a suburban community of Bangkok in 2003 and 2004.

MEASUREMENTS

(i) Exposures-migration (defined as the occasion when a young person born in a more rural area moves for the first time into Greater Bangkok); and (ii) outcomes-illicit drug use was assessed with an anonymous self-report adapted from the Diagnostic Interview Schedule (DIS) and hazardous/harmful drinking with Alcohol Use Disorder Identification Test (AUDIT).

FINDINGS

The results showed that 10.9% (82 males and 17 females) had illicit drug use and 24.3% (179 males and 62 females) hazardous and harmful drinking. In multivariate analysis, rural-urban migration was not associated with illicit drug use, whereas hazardous/harmful drinking was associated independently with being late migrants, who moved at the age of 15 or older.

CONCLUSIONS

Illicit drug use and hazardous/harmful drinking were common among young Thais. The potential effect of migration on hazardous and harmful drinking identified in this study may be helpful for the design and implementation of preventive measures.

Maternal social capital and child health in Vietnam

STUDY OBJECTIVE

To explore the association between maternal social capital and child physical and mental health in Vietnam.

DESIGN

Cross sectional survey. Measures of maternal structural social capital comprised group membership, citizenship, and social support. Measures of cognitive social capital comprised trust, social harmony, sense of fairness, and belonging. Child health was measured by anthropometrics and mothers' reports of acute and chronic physical health problems and child mental health.

PARTICIPANTS

2907 mothers and their 1 year old or 8 year old children from five provinces in Vietnam.

MAIN RESULTS

The study found low levels of group membership and citizenship and high levels of cognitive social capital and support, and generally higher levels of social capital among the mothers of 8 year old compared with 1 year old children. All but one association was in the hypothesised direction (that is, higher levels of social capital associated with reduced risk of child health problems). There were more statistically significant relations between maternal social capital and the health of 1 year olds compared with 8 year old children, and between measures of social support and cognitive social capital and child health, than with group membership and involvement in citizenship activities.

CONCLUSION

This study is the first to explore the association between multiple dimensions of social capital and a range of different child health outcomes in the developing world. These results now need to be tested using longitudinal data.

From research evidence to policy: Mental health care in Viet Nam

PROBLEM

The use of evidence-based policy is gaining attention in developing countries. Frameworks to analyse the process of developing policy and to assess whether evidence is likely to influence policy-makers are now available. However, the use of evidence in policies on caring for people with mental illness in developing countries has rarely been analysed.

APPROACH

This case study from Viet Nam illustrates how evidence can be used to influence policy. We summarize evidence on the burden of mental illness in Viet Nam and describe attempts to influence policy-makers. We also interviewed key stakeholders to ascertain their views on how policy could be affected. We then applied an analytical framework to the case study; this framework included an assessment of the political context in which the policy was developed, the links between organizations needed to influence policy, external influences on policy-makers and the nature of evidence required to influence policy-makers.

LOCAL SETTING

The burden of mental illness among various population groups was large but there were few policies aimed at providing care for people with mental illness, apart from policies for providing hospital-based care for people with severe mental illness.

RELEVANT CHANGES

The national plan proposes to incorporate screening for mental illness among women and children in order to implement early detection and treatment.

LESSONS LEARNED

Evidence on the burden of mental ill-health in Viet Nam is patchy and research in this area is still relatively undeveloped. Nonetheless the policy process was influenced by the evidence from research because key links between organizations and policy-makers were established at an early stage, the evidence was regarded as rigorous and the timing was opportune.

Social capital and mental health: a comparative analysis of four low income countries

Women and the poor are disproportionately affected by common mental disorders (CMD), and women in low income countries are particularly at risk. Social capital may explain some of the geographical variation in CMD, but the association between social capital and CMD in low income countries has rarely been studied. This paper aims to explore the relationship between individual and ecological measures of social capital and maternal CMD in four low income countries. Cross-sectional data from the Young Lives (YL) study with information across 234 communities in Peru, Ethiopia, Vietnam and Andhra Pradesh (India) were used. The mental health of mothers of one-year-old children (n=6909), and the individual cognitive and structural social capital of all respondents was assessed. Ecological social capital was calculated by aggregating individual responses to the community level. Multi-level modelling was used to explore the association between individual and ecological (community level) social capital and maternal CMD in each of the four countries, adjusting for a wide range of individual and community level confounders. The analysis shows that individual cognitive social capital is associated with reduced odds of CMD across all four countries. The results for structural social capital are more mixed and culturally specific, with some aspects associated with increased odds of CMD. This suggests that structural social capital has context-specific effects and cognitive social capital more universal effects on maternal CMD.

Maternal mental health and child nutritional status in four developing countries

OBJECTIVE

To test the hypothesis that maternal common mental disorders (CMD) are associated with poorer child nutritional status in four developing countries (Ethiopia, India, Vietnam, and Peru).

DESIGN

Community based cross sectional survey in 20 sites in each of the four countries. Maternal CMD measured by the self reporting questionnaire 20 items (SRQ20). Potential confounding factors include: household poverty, household composition, maternal characteristics such as age and education, child characteristics such as birth weight, age, and sex. Possible mediating factors included the child's physical health and breast feeding status.

SETTING

Urban and rural, poor and middle income areas in each country.

PARTICIPANTS

2000 mothers and their children aged 6-18 months in each country.

MAIN OUTCOME MEASURES

Child stunting and underweight measured using standard anthropometric techniques.

RESULTS

Levels of maternal CMD and child malnutrition are high in each study setting. After adjusting for confounding factors, the odds ratios (OR) for the association of maternal CMD with child stunting are: India 1.4 (95%CI 1.2 to 1.6), Peru 1.1 (0.9 to 1.4), Vietnam 1.3 (0.9 to 1.7), and Ethiopia 0.9 (0.7 to 1.2). For child underweight, the confounder adjusted ORs are: India 1.1 (0.9 to 1.4), Peru 0.9 (0.6 to 1.2), Vietnam 1.4 (1.1 to 1.8), and Ethiopia 1.1 (0.9 to 1.4). No clear evidence for effect modification by the child's age or sex was found. Possible mediating factors for the effect of maternal CMD on child malnutrition did not provide strong suggestions for potential mechanisms.

CONCLUSIONS

There was a relation between high maternal CMD and poor child nutritional status in India and Vietnam. However, the findings from Peru and Ethiopia do not provide clear evidence for a similar association being present in non-Asian countries. Regardless of the direction of the relation, child nutrition programmes in Asia should consider incorporating promotion of maternal mental health.

Maternal social capital and child nutritional status in four developing countries

Social capital has been shown to be positively associated with a range of health outcomes, yet no studies have explored the association between maternal social capital and child nutritional status. Using data from the Young Lives study comprising 7242 1-year-old children from Peru, Ethiopia, Vietnam and the state of Andhra Pradesh in India, we find significant differences in the levels of, in particular, structural social capital (group membership and citizenship) between countries. While few associations were found between structural measures of social capital, support from individuals and cognitive social capital (e.g. trust, social harmony) displayed fairly consistent positive associations with child nutritional status across countries.

The experience of abuse and mental health in the young Thai population A preliminary survey

OBJECTIVES

The aims of this study were to examine the prevalence of child abuse exposure among Thai people in a suburban community and to describe the association of abuse experiences with common mental disorders (CMD), alcohol use disorders and substance use.

METHODS

A population-based cross-sectional survey was conducted in Northern Bangkok on a representative sample of 202 young residents, aged 16-25 years.

RESULTS

Thirty eight percent of the respondents reported experiencing some form of abuse during childhood, with 5.8% having been subjected to sexual penetration, 11.7% having been physically abused and 31.8% emotionally abused. A graded relationship was found between the extent of exposure to abuse during childhood and mental problems. After controlling for potential confounders, CMD remained significantly associated with emotional abuse, and alcohol use disorders remained associated with sexual abuse. Strong but non-significant trends were present for associations between CMD and sexual abuse and all forms of abuse with substance use.

CONCLUSION

Child abuse experiences were common among the respondents. Childhood abuse, particularly sexual abuse, has a potentially devastating impact on adult mental health.

Social capital and mental illness: a systematic review

STUDY OBJECTIVE

The concept of social capital has influenced mental health policies of nations and international organisations despite its limited evidence base. This papers aims to systematically review quantitative studies examining the association between social capital and mental illness.

DESIGN AND SETTING

Twenty electronic databases and the reference sections of papers were searched to identify published studies. Authors of papers were contacted for unpublished work. Anonymised papers were reviewed by the authors of this paper. Papers with a validated mental illness outcome and an exposure variable agreed as measuring social capital were included. No limitations were put on date or language of publication.

MAIN RESULTS

Twenty one studies met the inclusion criteria for the review. Fourteen measured social capital at the individual level and seven at an ecological level. The former offered evidence for an inverse relation between cognitive social capital and common mental disorders. There was moderate evidence for an inverse relation between cognitive social capital and child mental illness, and combined measures of social capital and common mental disorders. The seven ecological studies were diverse in methodology, populations investigated, and mental illness outcomes, making them difficult to summarise.

CONCLUSIONS

Individual and ecological social capital may measure different aspects of the social environment. Current evidence is inadequate to inform the development of specific social capital interventions to combat mental illness.

Psychometric and cognitive validation of a social capital measurement tool in Peru and Vietnam

Social capital is a relatively new concept which has attracted significant attention in recent years. No consensus has yet been reached on how to measure social capital, resulting in a large number of different tools available. While psychometric validation methods such as factor analysis have been used by a few studies to assess the internal validity of some tools, these techniques rely on data already collected by the tool and are therefore not capable of eliciting what the questions are actually measuring. The Young Lives (YL) study includes quantitative measures of caregiver's social capital in four countries (Vietnam, Peru, Ethiopia, and India) using a short version of the Adapted Social Capital Assessment Tool (SASCAT). A range of different psychometric methods including factor analysis were used to evaluate the construct validity of SASCAT in Peru and Vietnam. In addition, qualitative cognitive interviews with 20 respondents from Peru and 24 respondents from Vietnam were conducted to explore what each question is actually measuring. We argue that psychometric validation techniques alone are not sufficient to adequately validate multi-faceted social capital tools for use in different cultural settings. Psychometric techniques show SASCAT to be a valid tool reflecting known constructs and displaying postulated links with other variables. However, results from the cognitive interviews present a more mixed picture with some questions being appropriately interpreted by respondents, and others displaying significant differences between what the researchers intended them to measure and what they actually do. Using evidence from a range of methods of assessing validity has enabled the modification of an existing instrument into a valid and low cost tool designed to measure social capital within larger surveys in Peru and Vietnam, with the potential for use in other developing countries following local piloting and cultural adaptation of the tool.

Common mental disorders in a young urban population in Colombia

BACKGROUND

There are few studies of mental ill health among young people in developing countries.

AIMS

To measure the prevalence of common mental disorders among low-income young people in the city of Cali, Colombia and to examine associations with violence and social capital.

METHOD

The Self-Reporting Questionnaire was administered to 1057 young people aged 15-25 years. Social capital, violence, alcoholism and socio-demographic variables were also measured.

RESULTS

We found 255 young people (24%) with common mental disorders. Being a woman, having limited education and experiencing high levels of violence were the main risk factors for common mental disorders. Social capital did not emerge as a risk factor.

CONCLUSIONS

A large burden of mental ill health among young people was found; this requires urgent interventions and more research on the mechanisms which link mental health and violence.

Trends, priorities and policy directions in the control of vector-borne diseases in urban environments

The habitats available in urban environments tend to be rather lacking in diversity compared to those in the countryside, and relatively few species are able to exploit them. Those that can, however, often find themselves relatively well provided with food and places to live, and relatively free of competitors and predators. This applies not only to such well-known species as the house-sparrow, but also to most of the important mosquito vectors of human disease in urban areas. Human city dwellers thus tend to be exposed to a different spectrum of disease than their rural counterparts. This review describes how the physical and social changes associated with urbanization have altered the transmission of vector-borne disease. It concentrates on the important mosquito-borne infections: malaria, dengue and filariasis. Dengue virus vectors breed in relatively clean water in man-made containers, while urban filariasis vectors breed in highly polluted water, and these mosquitoes have now been spread by man's activities to almost every tropical city. With important exceptions, anopheline malaria vectors have not generally succeeded in adapting to urban life, but malaria can still be a problem where there are rural pockets in the middle of town. Each of these problems requires control using different technologies and timing. The following policy implications are stressed. The areas of responsibility between different sectors of the local services (health, water supply, sanitation), and between these and the public, need to be clearly defined. Due to the biological complexities of vector-borne disease, decentralized primary health care systems are generally incapable of ensuring that control efforts are adequately targeted in time and space. Community support is essential but specialized technical skills are also required.

Mental health and social capital in Cali, Colombia

Mental ill health forms an increasingly significant part of the burden of disease in developing countries. The growing interest in social risk factors for mental health coincides with the development of social capital research which may further inform the social model of mental health. The objective of the study reported here was to discover if there is an independent association between social capital and mental health when taking into account an array of demographic and violence variables. A total of 1168 youth (15-25 years) in a low income community in Cali, Colombia were surveyed. Mental health was measured by a 20 item self-report questionnaire. The instrument used to measure social capital covered structural and cognitive social capital. Twenty-four per cent of the sample were probable cases of mental ill health. Females had a prevalence rate three times higher than males. Using a model which considered demographic and social capital measures as potential risk factors for mental ill health, the significant risk factors emerged as being female, having limited schooling, working in the informal sector, being a migrant, and having low trust in people. The 'classic' poverty type variables (poor education and employment) were more important than social capital, as was the commonly dominant risk factor for mental ill health-being a woman. When violence factors were added to the model, the 'trust' factor fell out and the most important risk factors became (in descending order of importance): being female; no schooling/incomplete primary; and being a victim of violence. The dominance of poverty related factors, as opposed to social capital, prompts renewed attention to the explanatory mechanisms that link income inequality and poor mental health.

Measuring mental health in a cost-effective manner

Mental health has been found to contribute significantly to the global burden of disease. This has raised the profile of mental health in developing countries. Many countries still do not have mental health policies, nor do they incorporate mental health in their primary care package. Community mental health profiles are needed to inform policy. There is a demand for more studies of mental health and the inclusion of mental health measures in more general, comprehensive, population-based health surveys. This article reviews the use and performance of a World Health Organization-endorsed instrument known as the Self-Reporting Questionnaire 20 items (SRQ20). The paper concludes that the high face and criterion validity, ease of use and suitability for administration by lay workers support the use of the SRQ20 as a cost-effective instrument with which to measure community mental health.

The social distribution of explanations of health and illness among adolescents in São Paulo, Brazil

The present paper reports on a study, which investigated explanations of health and illness among adolescents from three socio-economic backgrounds in São Paulo, Brazil. Interviews and group discussions were used to elicit definitions of health and illness, explanations of illness causality and prevention and maintenance of health among 31 deprived adolescents with recent experience of living on the streets, 20 adolescents from poor families and 20 adolescents from privileged families. The findings showed that adolescents from different socio-economic conditions draw upon similar explanatory models to make sense of health and illness. There were also clear distinctions between the groups. Health and illness were presented as being dependent upon multiple factors such as resistance of the body and socio-economic status among privileged adolescents. In contrast, the explanations offered by deprived and poor adolescents for both health and illness rested on behaviour or exposure to environmental hazards. Moreover, drugs, sexually transmitted diseases and faith in God were prominent features of the accounts from deprived adolescents. The findings suggest a need for health professionals to be sensitive to people's perspectives of health and illness and their link to socio-economic conditions. To emphasize individuals' behaviour in the provision of health-related information among deprived adolescents might be counter productive and reinforce victim blaming.

Urban primary health care in Africa: a comparative analysis of city-wide public sector projects in Lusaka and Dar es Salaam

Since the 1980s, a number of health system interventions in Sub-Saharan Africa have targeted urban areas, reflecting increasing attention to the contextual contrasts between urban and rural health settings. This article compares attempts in two projects-in Zambia and Tanzania-to strengthen urban primary health care in the public sector and make it more inclusive in a dual sense: making quality services more accessible to the poor; and fostering community involvement in health care and health-related activity. The paper reveals that the projects have produced many similar outcomes (both positive and negative), despite differences in their managerial arrangements. After identifying issues that may need to be considered in other health initiatives, the discussion revisits the urban/rural dimension of health care in relation to three key aspects: the by-passing of primary services, community participation and inter-sectoral action.

The Dar Es Salaam Urban Health Project, Tanzania: a multi-dimensional evaluation

BACKGROUND

In the 1990s, as a response to rapid urbanization, there were a number of large, urban health initiatives in sub-Saharan Africa. Most tended to be comprehensive as opposed to selective in scope: they aimed at strengthening the health system as a whole, and placed emphasis on delivering improved services at the primary level, with increased community participation. A multi-dimensional approach is required to assess the achievements of such initiatives.

METHODS

In 2000 an external evaluation of the Swiss-funded Dar es Salaam Urban Health Project, Tanzania, used 50 key informant interviews, 90 health facility exit interviews, 90 community resident interviews and document analysis to assess achievements over a 10 year period. The study considered achievements in terms of capacity building, improving quality of care, community involvement, inter-sectoral action and sustainability.

RESULTS

Although the project achieved improvements in capacity building and in structural and technical quality of care, there were difficulties in generating inter-sectoral action and the concept of participation was limited. However, city-level 'ownership' of the activities was high, and, with the advent of sector-wide allocation of funds (SWAPs) in the health sector in Tanzania, the prospects for sustainability of the achievements made in the project appear to be good.

CONCLUSION

Both the multi-dimensional method of the evaluation and the findings can inform future urban health initiatives in sub-Saharan Africa and in other resource-constrained environments. The decentralization that occurred in Dar es Salaam and the general approach of the project provided a platform to test out various elements that are common to health sector reform across developing countries.

Maternal mobility across the rural-urban divide: empirical data from coastal Kenya

This paper describes the mobility patterns, rural-urban linkages and household structures for a low-income neighbourhood on the outskirts of Mombasa, Kenya's main port, and a rural settlement 60 kilometres away. Drawing on interviews with a sample of mothers resident in each location, it documents their perceptions of the advantages and disadvantages of rural and urban life, and shows the continuous interchange between the two areas. It also highlights how most rural to urban migrants are familiar with urban environments before moving and how, having moved, many maintain strong rural ties. The ways in which households are split across rural and urban areas is influenced by intra-household relations and by household efforts to balance the income-earning opportunities in town, the relatively low cost of living in rural areas and future family security. This produces dramatic differences between and among rural and urban mothers and suggests a need for policy makers and planners to recognize diversity and to build upon complex livelihood strategies that span the rural-urban divide.

Measuring social capital within health surveys: key issues

With growing recognition of the social determinants of health, social capital is an increasingly important concept in international health research. Although there is relatively little experience of measuring social capital, particularly in developing countries, there are now a number of studies that allow the identification of some key issues that need to be considered when measuring social capital. After summarizing definitions and the rise of interest in the link between social capital and health, measures used in key studies of social capital and health are presented. Some important issues are then considered: obtaining a sufficiently comprehensive measure which empirically captures the latest theoretical developments in the field (particularly the concepts of cognitive, structural, bonding and bridging social capital); moving from the individual to the ecological level; consideration of confounding factors, and validity and reliability.

The influence of user fees and patient demand on prescribers in rural Nepal

Irrational prescribing and over-prescription is a world-wide problem. Prescribers often cite patient demand as one of the main reasons why they over-prescribe, but the degree to which this is so is unknown. This article describes a study to test the hypothesis that patient demand causes over-prescription. The study occurred within the context of different kinds of nominal user fee for drugs in Nepal, where it was assumed that charging per drug item would deter patient demand, and hence over-prescription, as compared to charging per prescription. Focus group discussions with patients attending rural health facilities explored patient attitudes towards drugs. Patients and health workers were interviewed to gather quantitative data on (1) patient demand, and (2) health worker views of patient demand and their own prescribing habits, and comparing these with the drugs actually prescribed and dispensed to patients. Patients felt they needed more drugs than they were prescribed or dispensed, but stated that they would be happy to accept advice from prescribers for fewer drugs. In all areas of whatever fee type, there was no association between the number of drug items patients felt they needed pre-consultation and the number of drug items that they actually received as observed postconsultation. However, there was a significant association between the average number of drug items per patient that prescribers stated they usually prescribed and the actual number that were prescribed. It was concluded that patient demand was not affected by different kinds of user fee and did not directly influence prescribing behaviour.

Evaluation of medical rehabilitation in community based rehabilitation

Almost all governments and non-governmental organisations in developing countries use a community-based rehabilitation (CBR) approach to work with disabled people. Although disabled people's organisations reject the categorisation of disability in individual terms, 'medical rehabilitation' is still regarded as an important but time limited process within rehabilitation. The paper lists measures and methods used in a comprehensive evaluation, and presents a practical method to examine the quality of medical rehabilitation. The method was developed and applied in an evaluation of service needs and service provision for disabled people in low-income communities, for the Ministry of Welfare, Government of India. The method described is a tracer approach. It assesses quality in three aspects of medical rehabilitation: (i) Technical quality, based on application of minimum technical standards for each impairment. (ii) Interpersonal quality, by observation of service sessions and interviews with service users. (iii) Management (structural) quality, by comparing the rehabilitation goals of service users and service providers. The method differs from most others in that it is process oriented, as opposed to output oriented. The method meets the challenges of providing low-cost assessment of a difficult outcome measure (the quality of medical rehabilitation), within a complex process (CBR). It is anticipated that the tracer method will be useful to the objective evaluation of disability services throughout the developing world.

Healthy city projects in developing countries: the first evaluation

The 'healthy city' concept has only recently been adopted in developing countries. From 1995 to 1999, the World Health Organization (WHO), Geneva, supported healthy city projects (HCPs) in Cox's Bazar (Bangladesh), Dar es Salaam (Tanzania), Fayoum (Egypt), Managua (Nicaragua) and Quetta (Pakistan). The authors evaluated four of these projects, representing the first major evaluation of HCPs in developing countries. Methods used were stakeholder analysis, workshops, document analysis and interviews with 102 managers/implementers and 103 intended beneficiaries. Municipal health plan development (one of the main components of the healthy city strategy) in these cities was limited, which is a similar finding to evaluations of HCPs in Europe. The main activities selected by the projects were awareness raising and environmental improvements, particularly solid waste disposal. Two of the cities effectively used the 'settings' approach of the healthy city concept, whereby places such as markets and schools are targeted. The evaluation found that stakeholder involvement varied in relation to: (i) the level of knowledge of the project; (ii) the project office location; (iii) the project management structure; and (iv) type of activities (ranging from low stakeholder involvement in capital-intensive infrastructure projects, to high in some settings-type activities). There was evidence to suggest that understanding of environment-health links was increased across stakeholders. There was limited political commitment to the healthy city projects, perhaps due to the fact that most of the municipalities had not requested the projects. Consequently, the projects had little influence on written/expressed municipal policies. Some of the projects mobilized considerable resources, and most projects achieved effective intersectoral collaboration. WHO support enabled the project coordinators to network at national and international levels, and the capacity of these individuals (although not necessarily their institutions) was increased by the project. The average annual running cost of the projects was approximately 132,000 US dollars per city, which is close to the costs of the only other HCP for which a cost analysis has been undertaken, Bangkok (115,000 US dollars per year) Recommendations for these and other HCPs are provided.

The explanatory models of mental health amongst low-income women and health care practitioners in Lusaka, Zambia

There is currently much debate about the cultural construction and specificity of mental health. It is thus not surprising that explanatory models, which look at the meaning of illness for those suffering from it, have been widely used within the mental health field. This paper considers the significance of explanatory models and presents a study comparing the explanatory models of mental ill health used by urban women in low-income groups and local health care practitioners in ZAMBIA: To measure mental ill-health status, an instrument recommended by the World Health Organization was used - the Self Reporting Questionnaire, 20 items (SRQ 20). To obtain explanatory models, Kleinman's classic eight questions were adapted. The terms used by the practitioners to define and explain the mental health problems of women in low-income groups were 'stress and depression', with these two concepts being used interchangeably. In contrast, the phrase most frequently used by the women was 'problems of the mind'. The professionals regarded the experience of depression itself as a manifestation of ill health. For the women, however, only the physical symptoms were defined as ill health. There was a common agreement, however, that the women's socioeconomic situation as a major causal factor. Both groups identified the home environment as a key determinant, particularly the quality of marital relationships. Greater awareness of explanatory models may have beneficial effects on mental health policy and planning, both at national levels (where recognition of the true prevalence and burden of mental ill health should have an impact on public health policy) and at the level of local implementation (where training of health professionals to take patients' explanatory models into account might contribute towards the diagnosis of mental health problems).

Maternal responses to childhood fevers: a comparison of rural and urban residents in coastal Kenya

Urbanization is an important demographic phenomenon in sub-Saharan Africa, and rural-urban migration remains a major contributor to urban growth. In a context of sustained economic recession, these demographic processes have been associated with a rise in urban poverty and ill health. Developments in health service provision need to reflect new needs arising from demographic and disease ecology change. In malaria-endemic coastal Kenya, we compared lifelong rural (n = 248) and urban resident (n = 284) Mijikenda mothers' responses to childhood fevers. Despite marked differences between the rural and urban study areas in demographic structure and physical access to biomedical services, rural and urban mothers' treatment-seeking patterns were similar: most mothers sought only biomedical treatment (88%). Shop-bought medicines were used first or only in 69% of the rural and urban fevers that were treated, and government or private clinics were contacted in 49%. A higher proportion of urban informal vendors stocked prescription-only drugs, and urban mothers more likely to contact a private than a government facility. We conclude that improving self-treatment has enormous potential to reduce morbidity and mortality in low-income urban areas, as has frequently been argued for rural areas. However, because of the underlying socio-economic, cultural and structural differences between rural and urban areas, rural approaches to tackle this may have to be modified in urban environments.

The referral process and urban health care in sub-Saharan Africa: the case of Lusaka, Zambia

Much of the current reform of urban health systems in sub-Saharan Africa focuses upon the referral system between different levels of care. It is often assumed that patients are by-passing primary facilities which leads to congestion at hospital outpatient departments. Zambia is well advanced in its health sector reform and this case study from the capital, Lusaka, explores the patterns of health seeking behaviour of the urban population, the reasons behind health care choices, the functioning of the referral system and the users' evaluations of the care received. Data were collected across three levels of the system: the community, local health centres and the main hospital (both in- and out-patients). Results showed those who by-passed health centres were doing so because they believed the hospital outpatient department to be cheaper and/or better supplied with drugs (not because they believed they would receive better technical care). Few users were given information about their diagnosis or reason for referral. The most striking result was the degree of unmet need for health services and the large number of individuals who were self-medicating due to lack of money rather than the minor nature of their illness. The current upgrading of urban health centres into 'reference centres' may provide a capacity for unmet need rather than decongesting the hospital outpatient department as originally intended.

Urbanization and mental health in Brazil: social and economic dimensions

While there have been attempts to examine urbanization and the quality of urban life as special risk factors in the generation of mental illness, the issue is controversial and remains largely unresolved. In this article particular consideration is given to the process of contemporary structural transformation in the Brazilian society leading to urbanization. Selected Brazilian studies of mental illness in urban areas are described. Economic displacement, or unemployment, emerges as the most significant risk factor for mental ill-health and is more important than, for example, rural to urban migration. Current studies are then criticized for focusing too much on the search for single risk factors instead of taking the social, structural context into account.

Private practitioners in the slums of Karachi: what quality of care do they offer?

Private health services have expanded in many developing countries over the last 10 yr. Qualified private practitioners provide basic health care for poorer groups in urban areas, although health care planners frequently criticize them for providing poor quality of care, charging high fees and failing to provide preventive health advice. In Karachi, a large city with more than 400 slums, private practitioners are important providers of care to the poor. This study assessed the nature and quality of care provided by 201 practitioners selected from four districts of the city. Vignettes of specific medical problems were used to assess their knowledge and their practice was measured by observing 658 doctor-patient contacts. The results show that knowledge was closer to accepted medical management than was their actual prescribing practice. On the other hand, their manners and interpersonal behaviour were good. Thus poor prescribing practice, which might equally stem from market influences as lack of knowledge, is the cause of low standards of care. In these circumstances, didactic in-service training to improve prescribing practice is unlikely to be successful.