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

Review of Urban Building Types and Their Energy Use and Carbon Emissions in Life-Cycle Analyses from Low- and Middle-Income Countries

Urbanization, slum redevelopment, and population growth will lead to unprecedented levels of residential building construction in "low- and middle-income" (LMI) countries in the coming decades. However, less than 50% of previous residential building life-cycle assessment (LCA) reviews included LMI countries. Moreover, all reviews that included LMI countries only considered formal (cement-concrete) buildings, while more than 800 million people in these countries lived in informal settlements. We analyze LCA literature and define three building types based on durability: formal, semiformal, and informal. These exhaustively represent residential buildings in LMI countries. For each type, we define dominant archetypes from across the world, based on construction materials. To address the data deficiency and lack of transparency in LCA studies, we develop a reproducibility metric for building LCAs. We find that the countries with the most reproducible studies are India, Sri Lanka, Turkey, Mexico, and Brazil. Only 7 out of 54 African countries have reproducible studies focused on either the embodied or use phase. Maintenance, refurbishment, and end-of-life phases are included in hardly any studies in the LMI LCA literature. Lastly, we highlight the necessity for studying current, traditional buildings to provide a benchmark for future studies focusing on energy and material efficiency strategies.

Determinants of Deteriorated Self-Perceived Health Status among Informal Settlement Dwellers in South Africa

Self-perceived health (SPH) is a widely used measure of health amongst individuals that indicates an individual's overall subjective perception of their physical or mental health status. As rural to urban migration increases, the health of individuals within informal settlements becomes an increasing concern as these people are at high health and safety risk due to poor housing structures, overcrowding, poor sanitation and lack of services. This paper aimed to explore factors related to deteriorated SPH status among informal settlement dwellers in South Africa. This study used data from the first national representative Informal Settlements Survey in South Africa conducted by the Human Sciences Research Council (HSRC) in 2015. Stratified random sampling was applied to select informal settlements and households to participate in the study. Multivariate logistic regression and multinomial logistic regression analyses were performed to assess factors affecting deteriorated SPH among the informal settlement dwellers in South Africa. Informal settlement dwellers aged 30 to 39 years old (OR = 0.332 95%CI [0.131-0.840], p < 0.05), those with ZAR 5501 and more household income per month (OR = 0.365 95%CI [0.144-0.922], p < 0.05) and those who reported using drugs (OR = 0.069 95%CI [0.020-0.240], p < 0.001) were significantly less likely to believe that their SPH status had deteriorated compared to the year preceding the survey than their counterparts. Those who reported always running out of food (OR = 3.120 95%CI [1.258-7.737], p < 0.05) and those who reported having suffered from illness or injury in the past month preceding the survey (OR = 3.645 95%CI [2.147-6.186], p < 0.001) were significantly more likely to believe that their SPH status had deteriorated compared to the year preceding the survey than their counterparts. In addition, those who were employed were significantly (OR = 1.830 95%CI [1.001-3.347], p = 0.05) more likely to believe that their SPH status had deteriorated compared to the year preceding the survey than those who were unemployed with neutral SPH as a base category. Overall, the results from this study point to the importance of age, employment, income, lack of food, drug use and injury or illness as key determinants of SPH amongst informal settlement dwellers in South Africa. Given the rapid increasing number of informal settlements in the country, our findings do have implications for better understanding the drivers of deteriorating health in informal settlements. It is therefore recommended that these key factors be incorporated into future planning and policy development aimed at improving the standard of living and health of these vulnerable residents.

Social Determinants of Health in the COVID-19 Pandemic Context of the Migrant Population Living in Settlements in Spain

Objectives: The aim of this study was to describe and evaluate the sociodemographic profile and assess the levels of anxiety and fear, work engagement, and psychological distress on a sample of migrants living in settlements in the province of Huelva (Spain) during the COVID-19 pandemic.

Methods: A descriptive cross-sectional study was conducted on a sample of 623 migrants during the months of April to June 2021, based on the Anxiety and Fear of COVID-19 (AMICO) assessment scale, the 9-item Utrecht Work Engagement Scale to assess work engagement, and the General Health Questionnaire (GHQ-12) to analyse psychological distress.

Results: A low level of education, dwelling of less than 3 m² and the desire to return to the country of origin may be related to the presence of anxiety and fear of COVID-19 and lower levels of work engagement.

Conclusion: There is a need to improve the study of the concept of health of the migrant population residing in the settlements of Huelva (Spain) and the assessment of their physical and mental health, in an official way.

Housing and Child Health in South Africa: The Value of Longitudinal Research

Research investigating the link between housing and health often produces mixed results. It does not always prove that good housing improves health. The results suggest a complex set of factors play a role, and the findings are sometimes contradictory. Two ways of addressing these concerns are longitudinal research, where the relationship between housing and health is measured in the short and medium terms, and a focus on children. We use the children’s housing and health data from the five waves of the National Income and Distribution Survey (NIDS) survey in South Africa, 2008 to 2017. We investigate the effect that continued living in informal housing over the five waves has had on these children’s health. Our results show a statistically significant relationship between prolonged residence in poor housing and poor health outcomes for some health indicators. The results call for a closer understanding of health issues in housing policy in South Africa.

Johannesburg's 'poor housing, good health' paradox: the role of health status assessment, statistical modelling, residential context and migrant status

OBJECTIVES

The 'poor housing, good health' paradox observed by De Wet et al. (2011) across eight of Johannesburg's poorest Wards (neighbourhoods), was re-examined using: a more generic measure of self-reported health; better-specified adjustment for measured confounders; household data from a range of Wards and income strata across Johannesburg and Gauteng; and adjustment for migrant status.

STUDY DESIGN

The present study examined the relationship between (formal vs. informal) housing and self-reported health (-limited work and/or social activities) across four subsamples of respondents to the 2013 Quality of Life survey undertaken by the Gauteng City Regional Observatory: n = 1494 from households in the eight Wards examined by De Wet et al. (2011); n = 3059 from households with the lowest income tertile in Johannesburg; n = 8263 from households throughout Johannesburg; and n = 24,727 from households throughout Gauteng Province, irrespective of Ward or income.

METHODS

The relationship between housing and self-reported health in each of these subsamples was examined before and after adjustment for measured confounders identified using a temporally determined causal path diagram in the form of a directed acyclic graph.

RESULTS

Following adjustment for measured confounders, 'informal housing' was only associated with 'good' self-reported health in Johannesburg's poorest Wards (odds ratio [OR]: 1.39; 95% confidence interval [CI]: 1.07, 1.79) and Johannesburg as a whole (OR: 1.15; 95%CI: 1.00, 1.31). These associations were substantially attenuated following adjustment for migrant status (OR: 1.26; 95%CI: 0.97, 1.65; OR: 1.07; 95%CI: 0.93, 1.22, respectively).

CONCLUSIONS

While the present study found that Johannesburg's 'poor housing, good health' paradox was still evident when using a more generic/subjective (self-reported) measure of health, the apparent paradox appears to reflect, at least in part: the differential aggregation of migrant-headed households in Johannesburg neighbourhoods exhibiting a high concentration of informal housing; and the likely impact of the health-related selection on the health of migrant-headed households.

A Systematised Review of the Health Impact of Urban Informal Settlements and Implications for Upgrading Interventions in South Africa, a Rapidly Urbanising Middle-Income Country

Informal settlements are becoming more entrenched within African cities as the urban population continues to grow. Characterised by poor housing conditions and inadequate services, informal settlements are associated with an increased risk of disease and ill-health. However, little is known about how informal settlement upgrading impacts health over time. A systematised literature review was conducted to explore existing evidence and knowledge gaps on the association between informal settlement characteristics and health and the impact of informal settlement upgrading on health, within South Africa, an upper-middle income African country. Using two databases, Web of Science and PubMed, we identified 46 relevant peer-reviewed articles published since 1998. Findings highlight a growing body of research investigating the ways in which complete physical, mental and social health are influenced by the physical housing structure, the psychosocial home environment and the features of the neighbourhood and community in the context of informal settlements. However, there is a paucity of longitudinal research investigating the temporal impact of informal settlement upgrading or housing improvements on health outcomes of these urban residents. Informal settlements pose health risks particularly to vulnerable populations such as children, the elderly, and people with suppressed immune systems, and are likely to aggravate gender-related inequalities. Due to the complex interaction between health and factors of the built environment, there is a need for further research utilising a systems approach to generate evidence that investigates the interlinked factors that longitudinally influence health in the context of informal settlement upgrading in rapidly growing cities worldwide.

Role of socioeconomic status and housing conditions in geriatric depression in rural China: a cross-sectional study

OBJECTIVES

The primary aim of this study was to describe the socioeconomic status (SES), housing conditions and depression of the elderly in rural China, as well as to examine the associations between depression and SES and housing conditions using the China Health and Retirement Longitudinal Study (CHARLS).

DESIGN

This is a cross-sectional study.

SETTING

A nationally representative sample of elderly in rural China.

PARTICIPANTS

A total of 4585 elderly adults in 2015 in rural China.

OUTCOME MEASURES

Prevalence and risk factors of depression among rural elderly.

RESULTS

Among the participants in this study, approximately 46.15% (2116/4585) reported depressive symptoms (10-item Center for Epidemiologic Studies Depression Scale [CESD-10] score >10) in rural China. The results revealed significant associations between higher scores on CESD-10 (indicating more symptoms of depression) and lowest personal annual income (OR=1.63, 95% CI 1.290 to 2.060), polluting cooking fuel (OR=1.16, 95% CI 1.018 to 1.321), toilet without seat (OR=1.273, 95% CI 1.056 to 1.535), as well as having no bath facility (OR=1.172, 95% CI 1.025 to 1.341) after adjustment for confounders.

CONCLUSION

Elderly in rural China experienced severe depressive symptoms. Lowest personal annual income, polluting cooking fuel, toilet without seat and having no bath facility were significantly associated with more depressive symptoms. Caution needs to be taken in generalising the findings of this study to the rest of the population in China since its highly selected sample.

Social Capital and Livelihoods in Johannesburg: Differential Advantages and Unexpected Outcomes among Foreign-Born Migrants, Internal Migrants, and Long-Term South African Residents

Foreign-born migrants – a group rarely compared with both internal migrants and long-term residents – are often positioned as the most disadvantaged South African urban population. We use data from a 2008 cross-sectional household survey conducted in Johannesburg to compare a contextually relevant measure of social capital and livelihood advantages between foreign-born migrants, internal migrants, and long-term South African residents. Our findings are counterintuitive and emphasize the need to explore the heterogeneity of urban migrant populations, and the mechanisms in which they better their lives, by showing that (1) foreign-born migrants have better urban livelihood outcomes, and (2) indicators of social capital are not necessarily associated with improved livelihood outcomes.

Home Ventilation in South African Children: Do Socioeconomic Factors Matter?

Poor socioeconomic circumstances and poverty are perceived to be barriers to successful home ventilation. Pediatric home ventilation has escalated rapidly in high-income countries but is underreported and underfunded in low-middle income countries. A retrospective chart review covering the past 20 years was carried out at the Red Cross War Memorial Children's Hospital in Cape Town, South Africa, a low-middle income country. Data collection included demographics, socioeconomic and family factors, clinical information, and ventilation-related information. Fifty-five children received home ventilation between 1994 and December 2015 from a median age of 3.5 years (range 0.4-17.6). Thirty-nine (71%) children received invasive ventilation and 16 (29%) children received mask-assisted ventilation. Most common primary diagnosis was a neuromuscular disease (60%). Twenty-six children (47%) were still on home ventilation in December 2015, 8 (15%) had been weaned off ventilation, and 21 (38%) had died. Median time between initiation of ventilation and discharge was 15 days (range 1-52) for mask-assisted ventilation and 88 days (8-991) for tracheostomy-assisted ventilation. Of the total 40 readmissions in the first year of home ventilation, 34 (85%) were emergency readmissions mainly necessitated by respiratory infections (n = 26; 65%). Despite a high prevalence of socioeconomic challenges, 89% of the children were successfully discharged on home ventilation. Main cause of death was acute infections (n = 11; 52%). Pediatric home ventilation in South Africa is feasible despite difficult socioeconomic circumstances. Survival outcome was comparable with that of high-income countries. However, a high level of psychosocial support and interventions is needed.

Health effects associated with the disposal of solid waste in landfills and incinerators in populations living in surrounding areas: a systematic review

OBJECTIVES

Potential health hazards for the environment and people living nearby landfills and incinerators are claimed to be related to several methods of waste management. Independent systematic review of the scientific literature is a key procedure to support the lay public and policy makers to achieve informed decisions.

METHODS

The study design and potential biases of papers retrieved in this comprehensive literature search were analyzed.

RESULTS

The most consistent result is that the risks of congenital anomalies and hospitalization due to respiratory disease are likely to be real nearby special waste landfills. From the very little information on exclusively urban waste depots it is reasonable to say that correct management of landfill does not increase the risk of these health effects. It is confirmed that historically incinerators are an important source of pollution and harm for the health of populations living nearby; however, changes in technology are producing more reassuring results.

CONCLUSIONS

A moderate level of confidence is possible in limited areas of knowledge, implying the need to overcome the limitations of current studies about exposure assessment and to control confounders at the individual level.