Increasing Health Insurance Enrollment in Low- and Middle-Income Countries: What Works, What Does Not, and Research Gaps: A Scoping Review.

Health insurance programs have the potential to shield individuals in low- and middle-income countries from catastrophic health expenses and reduce their vulnerability to poverty. However, the uptake of insurance programs remains low in these countries. We reviewed existing evidence from experimental studies on approaches that researchers have tested in order to raise the uptake. In the 12 studies we synthesized, educational programs and subsidies were the dominant interventions. Consistent with findings from previous studies on other health products, subsidies were effective in raising the uptake of insurance programs in many contexts. Conversely, education interventions-in their current forms-were largely ineffective, although they bolstered the effect of subsidies. Other strategies, such as the use of microfinance institutions and social networks for outreach and enrollment, showed mixed results. Additional research is needed on effective approaches to raise the uptake of insurance programs, including tools from behavioral economics that have shown promise in other areas of health behavior.

Fatores associados ao nível de segurança alimentar e nutricional no município e estado de São Paulo e no Brasil: uma análise dos resultados obtidos pela escala brasileira de insegurança alimentar / Food and nutritional security level associated factors in the city and state of São Paulo and in Brazil: an analysis of obtained results from the Brazilian food insecurity scale

A falta de segurança alimentar e nutricional (SAN) consiste em um fenômeno multifatorial, que pode afetar o estado nutricional do indivíduo por ela acometido de diversas maneiras e em qualquer faixa etária. A falta de SAN pode desencadear tanto desnutrição, como obesidade e assim favorecer o aumento da prevalência de doenças crônicas não transmissíveis, o que diminui a qualidade de vida e se constitui um importante problema de saúde pública. Objetivo: Analisar e comparar a força da associação dos fatores socioeconômicos e demográficos à segurança alimentar e nutricional (SAN) no Brasil e áreas geográficas selecionadas. Metodologia: Trata-se de um estudo ecológico, transversal e analítico, que utilizou como base os microdados da Pesquisa de Orçamento Familiar (POF/IBGE), realizada nos anos de 2017-2018, envolvendo 757 famílias residentes no município de São Paulo (MSP), 3.406 famílias do estado de São Paulo (ESP) e 49.365 famílias do Brasil. Utilizou-se a técnica de regressão logística multinomial, do tipo ordinal, para o processamento do modelo de associação entre o nível de SAN (nSAN) e as variáveis demográficas, socioeconômicas e clínicas, utilizando o módulo survey do Stata versão 14. Adotouse o nível de significância estatística de 5% e o odds ratio proporcional para descrever as associações. Resultados: A grande maioria dos indivíduos de referência dos domicílios componentes da amostra é do sexo masculino, adulta, com obesidade, sem seguro saúde e que não fazem nenhum tipo de dieta, variando as características de raça/cor e escolaridade entre as três localidades analisadas. Para as três localidades estudadas, encontrou-se proporções elevadas da população com segurança alimentar e nutricional garantida (acima de 59%). As associações encontradas demonstraram que as famílias com pessoas de referência do sexo feminino apresentam maior chance de piora do nSAN, bem como aquelas com menores níveis de saneamento básico e estratos de renda mais pobres, para os quais a chance de piora do nSAN em relação aos estratos de renda mais ricos se eleva em até 12 vezes. Ser de raça branca foi fator protetor à IAN, bem como ter idade mais avançada e mais anos de escolaridade. Conclusão: As características sociodemográficas sexo, raçacor, idade e escolaridade, e socioeconômicas, renda e presença de saneamento básico, apresentam importante associação ao nível de SAN das famílias, quando este é analisado por meio da Escala Brasileira de Insegurança Alimentar (EBIA). Entretanto, faz-se necessária a construção de um instrumento que avalie todas as dimensões da SAN

Lack of food and nutrition security (FNS) is a multifactorial phenomenon, which can impact the nutritional status of individual affected by it in different ways and in any age group. The lack of FNS can trigger both malnutrition and obesity and thus favor the prevalence increase of chronic non-communicable diseases, which reduces lifes quality and constitutes an important public health problem. Objective: To analyze and compare the strength of association of socioeconomic and demographic factors with FNS in Brazil and selected geographical areas. Methodology: Ecological, crosssectional, and analytical study, which used the microdata of the Research as a basis Family Budget (POF / IBGE), carried out in 2017-2018, involving 757 families residing in São Paulo city (SPC), 3,406 families from São Paulo state (SPS) and 49,365 families from Brazil. Multinomial logistic regression technique, of the ordinal type, was used to process the association model between the FNS level (FNSl) and the demographic, socioeconomic and clinical variables, using the survey module of Stata version 14. It was adopted statistical significance of 5% and proportional odds ratio to describe the associations. Results: Most reference individuals in the sample's households are male, adult, obese, without health insurance and who do not follow any type of diet, varying the characteristics of race / color and education between the three locations analyzed. For the three locations studied, high proportions of the population were found with guaranteed FNS (above 59%). Associations found showed that families headed by female individuals are more likely to worsen FNSl, as well as those with lower levels of basic sanitation and poorer income strata, for which the chance of worsening FNSl in relation to strata wealthier income rises to 12 times. Being white was a protective factor for food insecurity, as well as being older and with more years of schooling. Conclusion: Sociodemographic characteristics of sex, race-color, age and education, and socioeconomic, income and presence of basic sanitation, present important association at the FNSl of families, when this is analyzed through the Brazilian Food Insecurity Scale (EBIA). However, it is necessary to build an instrument that assesses all dimensions of the FNS

Exploring factors associated with pregnant women's experiences of material hardship during COVID-19: a cross-sectional Qualtrics survey in the United States.

BACKGROUND: The COVID-19 pandemic has exacerbated the financial insecurity of women and their families globally. Some studies have explored the impact of financial strain among pregnant women, in particular, during the pandemic. However, less is known about the factors associated with pregnant women's experiences of material hardship. METHODS: This cross-sectional study used a non-probability sample to examine the factors associated with pregnant women's experiences of material hardship during the COVID-19 pandemic. In January 2021, 183 pregnant women living in the United States participated in an online Qualtrics panel survey. In addition to socio-demographic characteristics, individuals were asked about their finances and predictors of financial well-being, mental health symptoms, and intimate partner violence (IPV) experiences. Chi-square analysis and one-way ANOVA were used to examine whether women's experiences with material hardship and associated factors differed by income level (i.e., less than $20,000; $20,000 to $60,000; more than $60,000). Ordinary least squares regression was used to calculate unadjusted and adjusted estimates. RESULTS: Study findings showed that the majority of women in the sample experienced at least one form of material hardship in the past year. Individuals with an annual household income less than $20,000 reported the highest average number of material hardships experienced (M = 3.7, SD = 2.8). Compared to women with household incomes less than $20,000, women with incomes of more than $60,000 reported significantly fewer material hardships, less financial strain, and higher levels of financial support, economic self-efficacy, and economic-self-sufficiency. Women with incomes of $60,000 or more also reported significantly lower levels of psychological abuse, and a smaller percentage met the cut-off for anxiety. Economic self-sufficiency, financial strain, posttraumatic stress disorder, and economic abuse were all significantly associated with material hardship. CONCLUSIONS: A contribution of this study is that it highlights the significant, positive association between economic abuse, a unique form of IPV, and material hardship among pregnant women during the pandemic. These findings suggest the need for policy and practice interventions that help to ameliorate the financial insecurity experienced by some pregnant women, as well as respond to associated bidirectional vulnerabilities (e.g., mental health symptoms, experiences of IPV).

Low income and outcome in idiopathic pulmonary fibrosis: An association to uncover.

BACKGROUND: Low income, a known prognostic indicator of various chronic respiratory diseases, has not been properly studied in idiopathic pulmonary fibrosis (IPF). We hypothesize that a low income has an adverse prognostic impact on IPF. METHODS: Patients were selected from the French national prospective cohort COFI. Patients' income was assessed through the median city-level income provided by the French National Institute of Statistics and Economic Studies according to their residential address. Patients were classified in two groups as "low income" vs. "higher income" depending on whether their annual income was estimated to be < or ≥18 170 €/year (the first quartile of the income distribution in the study population). The survival and progression-free survival (PFS) of the groups were compared by a log-rank test and a Cox model in multivariate analysis. RESULTS: 200 patients were included. The average follow-up was 33.8 ± 22.7 months. Patients in the low income group were significantly more likely to be of non-European origin (p < 0.006), and to have at least one occupational exposure (p < 0.0001), and they tended to have a higher cumulative exposure to fine particles PM2.5 (p = 0.057). After adjusting for age, gender, forced vital capacity at inclusion, geographical origin, and occupational exposure having a low-income level was a factor associated with a worse PFS (HR: 1.81; CI95%: 1.24-2.62, p = 0.001) and overall survival (HR: 1.49; CI95%: 1.0006-2.23, p = 0.049). CONCLUSIONS: Low income appears to be a prognostic factor in IPF. IPF patients with low incomes may also be exposed more frequently to occupational exposures.

Trends in Birth Rates After Elimination of Cost Sharing for Contraception by the Patient Protection and Affordable Care Act.

Importance: Reducing out-of-pocket costs is associated with improved patterns of contraception use. It is unknown whether reducing out-of-pocket costs is associated with fewer births. Objective: To evaluate changes in birth rates by income level among commercially insured women before (2008-2013) and after (2014-2018) the elimination of cost sharing for contraception under the Patient Protection and Affordable Care Act (ACA). Design, Setting, and Participants: This cross-sectional study used data from Clinformatics Data Mart database from January 1, 2008, to December 31, 2018, for women aged 15 to 45 years who were enrolled in an employer-based health plan and had pregnancy benefits for at least 1 year. Women without household income information and women with evidence of having undergone a hysterectomy were excluded. Exposure: Section 2713 of the ACA. Main Outcomes and Measures: The primary outcome was the proportion of reproductive-aged women with a live birth by year (measured yearly from 2008 to 2018 [11 time points]) within 3 income categories. The secondary outcome was the distribution of contraceptive method fills in 3 categories by year: (1) most effective methods (long-acting reversible contraception or sterilization), (2) moderately effective methods (pill, patch, ring, and injectable), and (3) no prescription or surgical method. Results: The analytic sample included 4 590 989 women (mean [SD] age; 30.8 [9.1] years in 2013; 3 069 053 White [66.9%]) enrolled in 47 721 health plans. A total of 500 898 participants (40.8%) resided in households with incomes less than 400% of the federal poverty level in 2013. In all 3 years (2008, 2013, and 2018), women in the lowest income category were younger than women in the other income groups (median range, 21-22 years vs 30-34 years) and in households with a higher median number of dependents (9-10 vs 2-4). There was an associated decrease in births in all income groups in the period after the elimination of out-of-pocket costs. The estimated probability of birth decreased most precipitously among women in the lowest income group from 8.0% (95% CI, 7.4%-8.5%) in 2014 to 6.2% (95% CI, 5.7%-6.7%) in 2018, representing a 22.2% decrease (P < .001). The estimated probability decreased in the middle income group by 9.4%, from 6.4% (95% CI, 6.3%-6.4%) to 5.8% (95% CI, 5.7%-5.8%) (P < .001), and in the highest income group by 1.8%, from 5.6% (95% CI, 5.6%-5.7%) to 5.5% (95% CI, 5.4%-5.5%) (P < .001) in the period after the elimination of cost sharing. Conclusions and Relevance: In this cross-sectional study, the elimination of cost sharing for contraception under the ACA was associated with improvements in contraceptive method prescription fills and a decrease in births among commercially insured women. Women with low income had more precipitous decreases than women with higher income, suggesting that enhanced access to contraception may address well-documented income-related disparities in unintended birth rates.

Home Language and Literacy Environments and Early Literacy Trajectories of Low-Socioeconomic Status Chilean Children.

This study used Latent Class Analysis to identify groups of children exposed to similar Home Language and Literacy Environments (HLLE) and explored whether belonging to a given HLLE group was related to children's language and early literacy growth from prekindergarten to kindergarten. Participants were 1,425 Chilean mothers and their children (Mage  = 52.52 months at baseline) from low-socioeconomic status households. Four HLLE groups were identified, which were associated with different trajectories of language and early literacy development. Children from groups whose mothers either read and talk about past events with them or teach them letters in addition to reading and talking about past events, showed higher relative vocabulary and letter knowledge. Implications for research and interventions are discussed.

Association of the US Affordable Care Act With Out-of-Pocket Spending and Catastrophic Health Expenditures Among Adult Patients With Traumatic Injury.

Importance: Trauma is an expensive and unpredictable source of out-of-pocket spending for American families. The Patient Protection and Affordable Care Act (ACA) sought to improve financial protection by expanding health insurance coverage, but its association with health care spending for patients with traumatic injury remains largely unknown. Objective: To evaluate the association of ACA implementation with out-of-pocket spending, premiums, and catastrophic health expenditures (CHE) among adult patients with traumatic injury. Design, Setting, and Participants: Data from a nationally representative sample of US adults aged 19 to 64 years who had a hospital stay or emergency department visit for a traumatic injury from January 2010 to December 2017 were analyzed using the Medical Expenditure Panel Survey. Multivariable generalized linear models were used to evaluate changes in spending after ACA implementation. Additionally, 4 income subgroups were evaluated based on ACA thresholds for program eligibility: lowest-income patients (earning 138% or less of the federal poverty level [FPL]), low-income patients (earning 139% to 250% of the FPL), middle-income patients (earning 251% to 400% of the FPL), and high-income patients (earning more than 400% of the FPL). Data were analyzed from February to December 2019. Exposures: Implementation of the ACA, beginning January 1, 2014. Main Outcomes and Measures: Out-of-pocket spending, premium spending, out-of-pocket plus premium spending, and likelihood of experiencing CHE, defined as out-of-pocket plus premium spending exceeding 19.5% of family income. Results: Of the 6288 included patients, 2995 (weighted percentage, 51.3%) were male, and the mean (SD) age was 41.4 (12.8) years. Implementation of the ACA was associated with 31% lower odds of CHE (adjusted odds ratio, 0.69; 95% CI, 0.54 to 0.87; P = .002). Changes were greatest in lowest-income patients, who experienced 30% lower out-of-pocket spending (adjusted percentage change, -30.4%; 95% CI, -46.6% to -9.4%; P = .01), 26% lower out-of-pocket plus premium spending (adjusted percentage change, -26.3%; 95% CI, -41.0% to -8.1%; P = .01), and 39% lower odds of CHE (adjusted odds ratio, 0.61; 95% CI, 0.44 to 0.84; P = .002). Low-income patients experienced decreased out-of-pocket spending and out-of-pocket plus premium spending but no changes in CHE, while middle-income and high-income patients experienced no significant changes in any spending outcome. In the post-ACA period, 1 in 11 of all patients with traumatic injury and 1 in 5 with the lowest incomes continued to experience CHE each year. Conclusions and Relevance: Implementation of the ACA was associated with improved financial protection for US adults with traumatic injury, especially lowest-income individuals targeted by the law's Medicaid expansions. Despite these gains, injured patients remain at risk of financial strain.

Income-related inequality in quality-adjusted life expectancy in Korea at the national and district levels.

BACKGROUND: The aim of this study was to measure differences in quality-adjusted life expectancy (QALE) by income in Korea at the national and district levels. METHODS: Mortality rates and EuroQol-5D (EQ-5D) scores were obtained from the National Health Information Database of the National Health Insurance Service and the Korea Community Health Survey, respectively. QALE and differences in QALE among income quintiles were calculated using combined 2008-2014 data for 245 districts in Korea. Correlation analyses were conducted to investigate the associations of neighborhood characteristics with QALE and income gaps therein. RESULTS: QALE showed a graded pattern of inequality according to income, and increased over time for all levels of income and in both sexes, except for low-income quintiles among women, resulting in a widened inequality in QALE among women. In all 245 districts, pro-rich inequalities in QALE were found in both men and women. Districts with higher QALE and smaller income gaps in QALE were concentrated in metropolitan areas, while districts with lower QALE and larger income gaps in QALE were found in rural areas. QALE and differences in QALE by income showed relatively close correlations with socioeconomic characteristics, but relatively weak correlations with health behaviors, except for smoking and indicators related to medical resources. CONCLUSIONS: This study provides evidence of income-based inequalities in health measured by QALE in all subnational areas in Korea. Furthermore, QALE and differences in QALE by income were closely associated with neighborhood-level socioeconomic characteristics.

Health gains and financial risk protection afforded by public financing of selected malaria interventions in Ethiopia: an extended cost-effectiveness analysis.

BACKGROUND: Malaria is a public health burden and a major cause for morbidity and mortality in Ethiopia. Malaria also places a substantial financial burden on families and Ethiopia's national economy. Economic evaluations, with evidence on equity and financial risk protection (FRP), are therefore essential to support decision-making for policymakers to identify best buys amongst possible malaria interventions. The aim of this study is to estimate the expected health and FRP benefits of universal public financing of key malaria interventions in Ethiopia. METHODS: Using extended cost-effectiveness analysis (ECEA), the potential health and FRP benefits were estimated, and their distributions across socio-economic groups, of publicly financing a 10% coverage increase in artemisinin-based combination therapy (ACT), long-lasting insecticide-treated bed nets (LLIN), indoor residual spraying (IRS), and malaria vaccine (hypothetical). RESULTS: ACT, LLIN, IRS, and vaccine would avert 358, 188, 107 and 38 deaths, respectively, each year at a net government cost of $5.7, 16.5, 32.6, and 5.1 million, respectively. The annual cost of implementing IRS would be two times higher than that of the LLIN interventions, and would be the main driver of the total costs. The averted deaths would be mainly concentrated in the poorest two income quintiles. The four interventions would eliminate about $4,627,800 of private health expenditures, and the poorest income quintiles would see the greatest FRP benefits. ACT and LLINs would have the largest impact on malaria-related deaths averted and FRP benefits. CONCLUSIONS: ACT, LLIN, IRS, and vaccine interventions would bring large health and financial benefits to the poorest households in Ethiopia.

Willingness-to-pay for long-lasting insecticide-treated bed nets: a discrete choice experiment with real payment in Ghana.

BACKGROUND: Expanding access to long-lasting insecticidal nets (LLINs) is difficult if one is limited to government and donor financial resources. Private commercial markets could play a larger role in the continuous distribution of LLINs by offering differentiated LLINs to middle-class Ghanaians. This population segment has disposable income and may be willing to pay for LLINs that meet their preferences. Measuring the willingness-to-pay (WTP) for LLINs with specialty features that appeal to middle-class Ghanaians could help malaria control programmes understand what is the potential for private markets to work alongside fully subsidized LLIN distribution channels to assist in spreading this commodity. METHODS: This study conducted a discrete choice experiment (DCE) including a real payment choice among a representative sample of 628 middle-income households living in Ashanti, Greater Accra, and Western regions in Ghana. The DCE presented 18 paired combinations of LLIN features and various prices. Respondents indicated which LLIN of each pair they preferred and whether they would purchase it. To validate stated willingness-to-pay, each participant was given a cash payment of $14.30 (GHS 65) that they could either keep or immediately spend on one of the LLIN products. RESULTS: The households' average probability of purchasing a LLIN with specialty features was 43.8% (S.D. 0.07) and WTP was $7.48 (GHS34.0). The preferred LLIN features were conical or rectangular one-point-hang shape, queen size, and zipper entry. The average WTP for a LLIN with all the preferred features was $18.48 (GHS 84). In a scenario with the private LLIN market, the public sector outlay could be reduced by 39% and private LLIN sales would generate $8.1 million ($311 per every 100 households) in revenue in the study area that would support jobs for Ghanaian retailers, distributors, and importers of LLINs. CONCLUSION: Results support a scenario in which commercial markets for LLINs could play a significant role in improving access to LLINs for middle-income Ghanaians. Manufacturers interested could offer LLIN designs with features that are most highly valued among middle-income households in Ghana and maintain a retail price that could yield sufficient economic returns.

In sickness or in health? Register-based evidence on partners' mutual receipt of sickness allowance and disability pension.

Studies on partners' mutual receipt of benefits constitute a growing research field in the way individual health and health-related decisions depend on social relations. This paper provides the first study on the mutual receipt of sickness allowance. We analysed married and cohabiting couples' receipt of sickness allowance and disability pension by estimating discrete-time hazard models for individuals aged 40-65 years, using longitudinal register data from Finland. The data cover the period 1987-2011, and allowed us to explore socioeconomic and demographic variables at both the individual and couple level. We found strong and long-term interrelations in receipt behaviour and dependencies across benefit types. The risk of receiving sickness allowance increases by 50 per cent during the first years after the partner's first receipt of the same benefit, while the risk of receiving disability pension is twice as high even five years after the partner's receipt of the same. Women appear to be more instrumental than men in the production of health within the couple, even in a context of high level of state support, gender equality and female labour force participation. Their receipt of disability pension is more related to the male partner's receipt than vice versa. For sickness allowance receipt, the gender asymmetry is small. Mutual benefit receipt of benefits may relate not only to collateral health effects but also to shared preferences and partner selection. We cannot distinguish between the mechanisms. However, couples with more economic and social resources seem to be more efficient in joint decision making. Correlations are particularly strong in the immediate term, and for couples who are highly educated, for those with high income, and for those with children in the household. More effective policies may be needed to equalise information regarding benefits, and monitor the use, and potential misuse, of these health benefits.

Coturnicultura como alternativa para aumento de renda do pequeno produtor / Quail production as an alternative to improve income to small farmers

A coturnicultura tem apresentado desenvolvimento significativo nos últimos anos devido às tecnologias empregadas na cadeia produtiva, gerando resultados satisfatórios aos produtores, com baixo custo de investimento. O estudo teve como objetivo avaliar a viabilidade econômico-financeira da coturnicultura para o pequeno produtor rural ou agricultor familiar. Foram utilizados dois grupos com 1.500 aves cada, A1 (aquisição de lote misto com um dia de idade) e A2 (aquisição de fêmeas com 35 dias de idade), e empregados a taxa interna de retorno, o payback simples e o descontado, bem como o valor presente líquido para a análise econômico-financeira. A coturnicultura representa uma alternativa em potencial para agregação de renda ao pequeno produtor/agricultor familiar, pois o retorno do investimento ocorre no segundo ano. Para o início da produção coturnícula, a aquisição de fêmeas aos 35 dias de idade é mais rentável, quando comparada à aquisição de lote misto com um dia de idade. Dessa forma, a alternativa estratégica de comercialização para o início da atividade é o ovo in natura, que possibilita o retorno do investimento em curto prazo.(AU)

Quail production showed significant development in recent years due to technologies used in the production chain, generating satisfactory results for farmers with low cost of investment. The purpose of this study was to evaluate the economic feasibility of quail production implementation for small farmers. A total of 3,000 birds were used and divided in two groups (A1 and A2). The internal rate return was measured, as well as simple payback. The present liquid value for economic and financial analysis was discounted. Quail production is a potential alternative for income increase of small farmers, since the return on investment occurs in the second year. To start quail production, the acquisition of female quails at 35 days of age is more profitable compared to a one day old mixed batch. Thus, the alternative marketing strategy for the beginning of activity is the egg, due to the return on short-term investment.(AU)

Income inequality and mental illness-related morbidity and resilience: a systematic review and meta-analysis.

BACKGROUND: Studies of the association between income inequality and mental health have shown mixed results, probably due to methodological heterogeneity. By dealing with such heterogeneity through a systematic review and meta-analysis, we examine the association between income inequality, mental health problems, use of mental health services, and resilience (defined as the ability to cope with adversity). METHODS: We searched the Global Health, PsychARTICLES, PsycINFO, Social Policy and Practice, Embase and MEDLINE databases up to July 6, 2016, for quantitative studies of the association of income inequality with prevalence or incidence of mental disorders or mental health problems, use of mental health services, and resilience. Eligible studies used standardised instruments at the individual level, and income inequality at the aggregated, contextual, and ecological level. We extracted study characteristics, sampling, exposure, outcomes, statistical modelling, and parameters from articles. Because several studies did not provide enough statistical information to be included in a meta-analysis, we did a narrative synthesis to summarise results with studies categorised as showing either a positive association, mixed results, or no association. The primary outcome in the random-effects meta-analysis was mental health-related morbidity, defined as the prevalence or incidence of any mental health problem. This study is registered with PROSPERO, number CRD42016036377. FINDINGS: Our search identified 15 615 non-duplicate references, of which 113 were deemed potentially relevant and were assessed for eligibility, leading to the inclusion of 27 studies in the qualitative synthesis. Nine articles found a positive association between income inequality and the prevalence or incidence of mental health problems; ten articles found mixed results, with positive association in some subgroups and non-significant or negative association in other subgroups; and eight articles found no association between income inequality and mental health problems. Of the nine articles included in our meta-analysis, one reported a positive association between income inequality and mental health problems, six reported mixed results, and two reported no association. Pooled Cohen's d effect sizes for the association between income inequality and any mental disorder or mental health problems were 0·06 (95% CI 0·01-0·11) for any mental disorder, and 0·12 (0·05-0·20) for depressive disorders. Our meta-regression analysis showed that none of the factors considered (sample size, contextual level at which income inequality was assessed, quality assessment, type of instruments, and individual income as control variable) explained heterogeneity between studies (I2 89·3%; p<0·0001). Only one study investigated the association between income inequality and resilience; it found greater income inequality was associated with higher prevalence of depression only among individuals with low income. The only study of the role of income inequality as a determinant of the use of mental health services reported no association. INTERPRETATION: Income inequality negatively affects mental health but the effect sizes are small and there is marked heterogeneity among studies. If this association is causal and growing income inequality does lead to an increase in the prevalence of mental health problems, then its reduction could result in a significant improvement in population wellbeing. FUNDING: None.

Quantifying the global distribution of premature mortality from non-communicable diseases.

Background: Non-communicable diseases (NCDs) have slowly risen to the top of the global health agenda and the reduction of premature NCD mortality was recently enshrined in Target 3.4 of the UN Sustainable Development Goals. The unequal global distribution of NCDs is inadequately captured by the most commonly cited statistics. Methods: We analyzed 'WHO Global Health Estimates' mortality data to calculate the relative burden of NCDs for each World Bank income group, including the 'risk of premature NCD death' based on methods in the WHO Global Status Report. We included all deaths from cardiovascular disease, all cancers, respiratory diseases and diabetes in people aged 30-69 years. Results: Developing countries experience 82% of absolute global premature NCD mortality, but they also contain 82% of the world's population. Examining relative risk shows that individuals in developing countries face a 1.5 times higher risk of premature NCD death than people living in high-income countries. Premature NCD death rates are highest in lower middle-income countries. Conclusions: Although numbers of deaths are useful to describe the absolute burden of NCD mortality by country type, the inequitable distribution of premature NCD mortality for individuals is more appropriately conveyed with relative risk.

Availability and Quality of Size Estimations of Female Sex Workers, Men Who Have Sex with Men, People Who Inject Drugs and Transgender Women in Low- and Middle-Income Countries.

OBJECTIVE: To assess the availability and quality of population size estimations of female sex workers (FSW), men who have sex with men (MSM), people who inject drug (PWID) and transgender women. METHODS: Size estimation data since 2010 were retrieved from global reporting databases, Global Fund grant application documents, and the peer-reviewed and grey literature. Overall quality and availability were assessed against a defined set of criteria, including estimation methods, geographic coverage, and extrapolation approaches. Estimates were compositely categorized into 'nationally adequate', 'nationally inadequate but locally adequate', 'documented but inadequate methods', 'undocumented or untimely' and 'no data.' FINDINGS: Of 140 countries assessed, 41 did not report any estimates since 2010. Among 99 countries with at least one estimate, 38 were categorized as having nationally adequate estimates and 30 as having nationally inadequate but locally adequate estimates. Multiplier, capture-recapture, census and enumeration, and programmatic mapping were the most commonly used methods. Most countries relied on only one estimate for a given population while about half of all reports included national estimates. A variety of approaches were applied to extrapolate from sites-level numbers to national estimates in two-thirds of countries. CONCLUSIONS: Size estimates for FSW, MSM, PWID and transgender women are increasingly available but quality varies widely. The different approaches present challenges for data use in design, implementation and evaluation of programs for these populations in half of the countries assessed. Guidance should be further developed to recommend: a) applying multiple estimation methods; b) estimating size for a minimum number of sites; and, c) documenting extrapolation approaches.

Perceptions and impact of plain packaging of tobacco products in low and middle income countries, middle to upper income countries and low-income settings in high-income countries: a systematic review of the literature.

OBJECTIVE: To review the current literature around the potential impact, effectiveness and perceptions of plain packaging in low income settings. METHOD: A systematic review of the literature. DATA SOURCES: 9 databases (PubMed, Global Health, Social Policy and Practice, Applied Social Sciences Index and Abstracts (ASSIA), CINAHL, PsycINFO, British Library for Development Studies (BLDS), Global Health Library and Scopus) were searched. The terms used for searching combined terms for smoking and tobacco use with terms for plain packaging. STUDY SELECTION: Studies investigating the impact of plain packaging on the determinants of tobacco use, such as smoking behaviour, appeal, prominence, effectiveness of health warnings, response to plain packs, attitudes towards quitting or likelihood of smoking in low-income settings, were identified. Studies must have been published in English and be original research of any level of rigour. DATA EXTRACTION: Two independent reviewers assessed studies for inclusion and extracted data. DATA SYNTHESIS: The results were synthesised qualitatively, with themes grouped under four key headings: appeal and attractiveness; salience of health warnings and perceptions of harm; enjoyment and perceived taste ratings; and perceptions of the impact on tobacco usage behaviour. RESULTS: This review has identified four articles that met the inclusion criteria. Studies identified that tobacco products in plain packaging had less appeal than in branded packaging in low-income settings. CONCLUSIONS: This review indicates that plain packaging appears to be successful in reducing appeal of smoking and packets, and supports the call for plain packaging to be widely implemented in conjunction with other tobacco control policies. However, there are considerable gaps in the amount of research conducted outside high-income countries.

Public Pensions as the Great Equalizer? Decomposition of Old-Age Income Inequality in South Korea, 1998-2010.

This study examines the redistributive effects of public pensions on old-age income inequality, testing whether public pensions function as the "great equalizer." Unlike the well-known alleviating effect of public pensions on old-age poverty, the effects of public pensions on old-age income inequality more generally have been less examined, particularly outside Western countries. Using repeated cross-sectional data of elderly Koreans between 1998 and 2010, we applied Gini coefficient decomposition to measure the impact of various income sources on old-age inequality, particularly focusing on public pensions. Our findings show that, contrary to expectations, public pension benefits have inequality-intensifying effects on old-age income in Korea, even countervailing the alleviating effects of public assistance. This rather surprising result is due to the specific institutional context of the Korean public pension system and suggests that the "structuring" of welfare policies could be as important as their expansion for the elderly, particularly for developing welfare states.