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1.
Reprod Health ; 17(1): 133, 2020 Aug 31.
Artigo em Inglês | MEDLINE | ID: mdl-32867791

RESUMO

BACKGROUND: Caesarean sections (CS) are increasing worldwide. Financial incentives and related regulatory and legislative factors are important determinants of CS rates. This scoping review examines the evidence base of financial, regulatory and legislative interventions intended to reduce CS rates. METHODS: We searched MEDLINE, EMBASE, CINAHL and two trials registers in June 2019. Both experimental and observational intervention studies were eligible for inclusion. Primary outcome measures were: CS, spontaneous vaginal and instrumental birth rates. We assessed quality of evidence using Grading of Recommendations, Assessment, Development and Evaluation (GRADE) method. RESULTS: We identified 9057 articles and assessed 65 full-texts. We included 16 observational studies. Most of the studies were conducted in high-income countries. Three studies assessed payment methods for health workers: equalising physician fees for vaginal and caesarean delivery reduced CS rates in one study; however, little or no difference in CS rates was found in the remaining two studies. Nine studies assessed payment methods for health organisations: There was no difference in CS rates between diagnosis-related group (DRG) payment system compared to fee-for-service system in one study. However, DRG system was associated with lower odds for CS in another study. There was little or no difference in CS rates following implementation of global budget payment (GBP) system in two studies. Vaginal birth after caesarean section (VBAC) increased after implementation of a case-based payment system in one study. Caesarean section increased while VBAC rates decreased following implementation of a cap-based payment system in another study. Financial incentive for providers to promote vaginal delivery combined with free vaginal delivery policy was found to reduce CS rates in one study. Studied regulatory and legislative interventions (comprising legislatively imposed practice guidelines for physicians in one study and multi-faceted strategy which included policies to control CS on maternal request in another study) were found to reduce CS rates. The GRADE quality of evidence varied from very low to low. CONCLUSIONS: Available evidence on the effects of financial and regulatory strategies intended to reduce unnecessary CS is inconclusive given inconsistency in effects and low quality of the available evidence. More rigorous studies are needed.


Assuntos
Cesárea/estatística & dados numéricos , Padrões de Prática Médica , Reembolso de Incentivo , Procedimentos Desnecessários/estatística & dados numéricos , Nascimento Vaginal Após Cesárea/estatística & dados numéricos , Cesárea/efeitos adversos , Feminino , Humanos , Masculino , Gravidez , Nascimento Vaginal Após Cesárea/efeitos adversos
2.
Lancet ; 387(10032): 2049-59, 2016 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-26477328

RESUMO

Conceived in 2003 and born in 2005 with the launch of its first report and country profiles, the Countdown to 2015 for Maternal, Newborn, and Child Survival has reached its originally proposed lifespan. Major reductions in the deaths of mothers and children have occurred since Countdown's inception, even though most of the 75 priority countries failed to achieve Millennium Development Goals 4 and 5. The coverage of life-saving interventions tracked in Countdown increased steadily over time, but wide inequalities persist between and within countries. Key drivers of coverage such as financing, human resources, commodities, and conducive health policies also showed important, yet insufficient increases. As a multistakeholder initiative of more than 40 academic, international, bilateral, and civil society institutions, Countdown was successful in monitoring progress and raising the visibility of the health of mothers, newborns, and children. Lessons learned from this initiative have direct bearing on monitoring progress during the Sustainable Development Goals era.


Assuntos
Mortalidade da Criança/tendências , Mortalidade Infantil/tendências , Mortalidade Materna/tendências , Causas de Morte/tendências , Criança , Serviços de Saúde da Criança/tendências , Pré-Escolar , Conservação dos Recursos Naturais/tendências , Feminino , Saúde Global/tendências , Disparidades em Assistência à Saúde/tendências , Humanos , Lactente , Recém-Nascido , Serviços de Saúde Materna/tendências , Gravidez
3.
Lancet ; 385(9966): 466-76, 2015 Jan 31.
Artigo em Inglês | MEDLINE | ID: mdl-24990815

RESUMO

The end of 2015 will signal the end of the Millennium Development Goal era, when the world can take stock of what has been achieved. The Countdown to 2015 for Maternal, Newborn, and Child Survival (Countdown) has focused its 2014 report on how much has been achieved in intervention coverage in these groups, and on how best to sustain, focus, and intensify efforts to progress for this and future generations. Our 2014 results show unfinished business in achievement of high, sustained, and equitable coverage of essential interventions. Progress has accelerated in the past decade in most Countdown countries, suggesting that further gains are possible with intensified actions. Some of the greatest coverage gaps are in family planning, interventions addressing newborn mortality, and case management of childhood diseases. Although inequities are pervasive, country successes in reaching of the poorest populations provide lessons for other countries to follow. As we transition to the next set of global goals, we must remember the centrality of data to accountability, and the importance of support of country capacity to collect and use high-quality data on intervention coverage and inequities for decision making. To fulfill the health agenda for women and children both now and beyond 2015 requires continued monitoring of country and global progress; Countdown is committed to playing its part in this effort.


Assuntos
Serviços de Saúde da Criança/tendências , Serviços de Saúde da Mulher/tendências , Criança , Pré-Escolar , Feminino , Previsões , Planejamento em Saúde , Política de Saúde/tendências , Prioridades em Saúde , Humanos , Responsabilidade Social
4.
PLoS Med ; 10(5): e1001416, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23667336

RESUMO

Global monitoring of intervention coverage is a cornerstone of international efforts to improve reproductive, maternal, newborn, and child health. In this review, we examine the process and implications of selecting a core set of coverage indicators for global monitoring, using as examples the processes used by the Countdown to 2015 for Maternal, Newborn and Child Survival and the Commission on Accountability for Women's and Children's Health. We describe how the generation of data for global monitoring involves five iterative steps: development of standard indicator definitions and measurement approaches to ensure comparability across countries; collection of high-quality data at the country level; compilation of country data at the global level; organization of global databases; and rounds of data quality checking. Regular and rigorous technical review processes that involve high-level decision makers and experts familiar with indicator measurement are needed to maximize uptake and to ensure that indicators used for global monitoring are selected on the basis of available evidence of intervention effectiveness, feasibility of measurement, and data availability as well as programmatic relevance. Experience from recent initiatives illustrates the challenges of striking this balance as well as strategies for reducing the tensions inherent in the indicator selection process. We conclude that more attention and continued investment need to be directed to global monitoring, to support both the process of global database development and the selection of sets of coverage indicators to promote accountability. The stakes are high, because these indicators can drive policy and program development at the country and global level, and ultimately impact the health of women and children and the communities where they live.


Assuntos
Serviços de Saúde da Criança/normas , Países em Desenvolvimento , Pesquisas sobre Atenção à Saúde/normas , Pesquisa sobre Serviços de Saúde/normas , Serviços de Saúde Materna/normas , Indicadores de Qualidade em Assistência à Saúde/normas , Adulto , Criança , Pré-Escolar , Consenso , Características da Família , Feminino , Saúde Global , Fidelidade a Diretrizes , Acessibilidade aos Serviços de Saúde/normas , Pesquisa sobre Serviços de Saúde/métodos , Disparidades em Assistência à Saúde/normas , Humanos , Lactente , Recém-Nascido , Masculino , Guias de Prática Clínica como Assunto , Avaliação de Programas e Projetos de Saúde , Projetos de Pesquisa , Inquéritos e Questionários
5.
BMC Health Serv Res ; 13 Suppl 2: S10, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23819778

RESUMO

BACKGROUND: The African Health Initiative includes highly diverse partnerships in five countries (Ghana, Mozambique, Rwanda, Tanzania, and Zambia), each of which is working to improve population health by strengthening health systems and to evaluate the results. One aim of the Initiative is to generate cross-site learning that can inform implementation in the five partnerships during the project period and identify lessons that may be generalizable to other countries in the region. Collaborators in the Initiative developed a common evaluation framework as a basis for this cross-site learning. METHODS: This paper describes the components of the framework; this includes the conceptual model, core metrics to be measured in all sites, and standard guidelines for reporting on the implementation of partnership activities and contextual factors that may affect implementation, or the results it produces. We also describe the systems that have been put in place for data management, data quality assessments, and cross-site analysis of results. RESULTS AND CONCLUSIONS: The conceptual model for the Initiative highlights points in the causal chain between health system strengthening activities and health impact where evidence produced by the partnerships can contribute to learning. This model represents an important advance over its predecessors by including contextual factors and implementation strength as potential determinants, and explicitly including equity as a component of both outcomes and impact. Specific measurement challenges include the prospective documentation of program implementation and contextual factors. Methodological issues addressed in the development of the framework include the aggregation of data collected using different methods and the challenge of evaluating a complex set of interventions being improved over time based on continuous monitoring and intermediate results.


Assuntos
Avaliação de Programas e Projetos de Saúde/métodos , Melhoria de Qualidade/normas , África , Atenção à Saúde/normas , Modelos Teóricos , Estatística como Assunto
6.
Reprod Health ; 10: 42, 2013 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-23962177

RESUMO

The last innovation in operative vaginal delivery happened centuries ago with the invention of the forceps and the vacuum extractor. The World Health Organization Odon Device Research Group recently published a protocol for a feasibility and safety study for a new device (Odon device) which aims to revolutionize assisted vaginal delivery. This editorial discusses the device and its pathway to global use. Although preliminary results look promising, the rigorous three-phased WHO protocol needs completion before the device can be determined, based on the evidence, to be safe and effective.


Assuntos
Segurança de Equipamentos , Extração Obstétrica/instrumentação , Feminino , Humanos , Gravidez
7.
J Adolesc Health ; 72(1S): S20-S26, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-35931647

RESUMO

PURPOSE: Existing datasets and research in the field of adolescent mental health do not always meet the needs of practitioners, policymakers, and program implementers, particularly in the context of vulnerable populations. Here, we introduce a collaborative, demand-driven methodology for the development of a strategic adolescent mental health research agenda. Ultimately, this agenda aims to guide future data sharing and collection efforts that meet the most pressing data needs of key stakeholders. METHODS: We conducted a rapid literature search to summarize common themes in adolescent mental health research into a "topic map". We then hosted two virtual workshops with a range of international experts to discuss the topic map and identify shared priorities for future collaboration and research. RESULTS: Our topic map identifies 10 major themes in adolescent mental health, organized into system-level, community-level, and individual-level categories. The engagement of cross-sectoral experts resulted in the validation of the mapping exercise, critical insights for refining the topic map, and a collaborative list of priorities for future research. DISCUSSION: This innovative agile methodology enables a focused deliberation with diverse stakeholders and can serve as the starting point for data generation and collaboration practices, both in the field of adolescent mental health and other topics.


Assuntos
Saúde do Adolescente , Saúde Mental , Adolescente , Humanos , Populações Vulneráveis
8.
J Adolesc Health ; 72(1S): S40-S51, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36400635

RESUMO

PURPOSE: To validate a culturally-adapted Kriol and Belizean English version of the Revised Children's Anxiety and Depression Scale (RCADS) through comparison with clinical diagnoses made using the Kiddie Schedule of Affective Disorders and Schizophrenia. METHODS: Participants comprised of 256 adolescents aged 10-14 years and 15-19 years, who completed the adapted RCADS (10 depression items, 12 anxiety items) in one-on-one interviews, followed by a diagnostic assessment using Kiddie Schedule of Affective Disorders and Schizophrenia administered by trained clinicians. Sensitivity, specificity, positive predictive value, negative predictive value, diagnostic odds ratios, area under the curve (AUC), and Youden's Index were calculated for RCADS cutoffs and scores on the total scale and anxiety and depression subscales. RESULTS: For adolescents aged 10-14 years (n = 161), the AUC was 0.72 for the full scale, 0.67 for anxiety subscale, and 0.76 for depression subscale. For adolescents aged 15-19 years (n = 95), the AUCs were 0.82, 0.77, and 0.83. Most depression items performed well in discriminating those with and without diagnoses. Separation anxiety items performed poorly. "Thoughts of death" were common even among adolescents not meeting diagnostic criteria. The RCADS depression subscale presented the strongest psychometric properties with adolescents aged 15-19 years (at cutoff of 13, sensitivity = 0.83, specificity = 0.77, positive predictive value = 0.47, negative predictive value = 0.95, odds ratio = 15.96). CONCLUSION: The adapted RCADS-22 had acceptable categorization for adolescents aged 10-14 years and excellent categorization for adolescents aged 15-19 years; therefore, the tool is recommended for use among the latter age group. Based on sensitivity and specificity values at different cutoffs, guidance is provided to select different thresholds to suit clinical, public health, or other uses to detect and quantify adolescent depression and anxiety in Belize.


Assuntos
Ansiedade , Depressão , Adolescente , Criança , Humanos , Ansiedade/diagnóstico , Ansiedade/psicologia , Belize , Depressão/diagnóstico , Depressão/psicologia , Escalas de Graduação Psiquiátrica , Psicometria , Reprodutibilidade dos Testes
9.
J Adolesc Health ; 72(1S): S34-S39, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-35934586

RESUMO

BACKGROUND: Adapting data collection instruments using transcultural translation and adaptation processes is essential to ensure that respondents comprehend the items and the original meaning is retained across languages and contexts. This approach is central to UNICEF's efforts to expand the use of standard data collection tools across settings and close the global data gap on adolescent mental health. METHODS: We conducted transcultural translation and adaptation processes in Belize using the Revised Children's Anxiety and Depression Scale (RCADS). Items from the original scale were translated into Belizean English and Kriol, reviewed by local mental health experts, and discussed in focus groups. Cognitive interviews were conducted with adolescents and parents. The information collected was analyzed with cultural equivalence domains: comprehensibility, acceptability, relevance, completeness, and technical equivalence. Bilingual discussions of findings informed the final item wordings, and the adapted tool was back-translated. RESULTS: Adaptation of terms and specific expressions were done to improve comprehensibility and to ensure the appropriate clinical meaning. For example, the expression 'feeling scared' was perceived to imply immaturity or threaten masculinity and was adapted to 'feeling afraid.' Expressions like "shaky" were modified to "trimble" in Kriol. Statements were reworded as questions to enhance acceptability and comprehensibility. DISCUSSION: A culturally adapted version of the RCADS was developed for use among adolescents in Belize in Belizean English and Kriol. The transcultural translation and adaptation procedure can be applied for other settings or tools to design contextual adaptations of mental health instruments prior to their validation or use in new settings.


Assuntos
Depressão , Idioma , Adolescente , Masculino , Criança , Humanos , Depressão/diagnóstico , Belize , Grupos Focais , Ansiedade/diagnóstico , Inquéritos e Questionários
10.
J Adolesc Health ; 72(1S): S27-S33, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36528384

RESUMO

PURPOSE: Mental disorders are among the leading causes of disability among adolescents aged 10-19 years. However, data on prevalence of mental health conditions are extremely sparse across low- and middle-income countries, even though most adolescents live in these settings. This data gap is further exacerbated because few brief instruments for adolescent mental health are validated in these settings, making population-level measurement of adolescent mental health especially cumbersome to carry out. In response, the UNICEF has undertaken the Measurement of Mental Health Among Adolescents at the Population Level (MMAP) initiative, validating open-access brief measures and encouraging data collection in this area. METHODS: This protocol presents the MMAP mixed-methods approach for cultural adaptation and clinical validation of adolescent mental health data collection tools across settings. Qualitative activities include an initial translation and adaptation, review by mental health experts, focus-group discussions with adolescents, cognitive interviews, synthesis of findings, and back-translation. An enriched sample of adolescents with mental health problems is then interviewed with the adapted tool, followed by gold-standard semistructured diagnostic interviews. RESULTS: The study protocol is being implemented in Belize, Kenya, Nepal, and South Africa and includes measures for anxiety, depression, functional limitations, suicidality, care-seeking, and connectedness. Analyses, including psychometrics, will be conducted individually by country and combined across settings to assess the MMAP methodological process. DISCUSSION: This protocol contributes to closing the data gap on adolescent mental health conditions by providing a rigorous process of cross-cultural adaptation and validation of data collection approaches.


Assuntos
Ansiedade , Saúde Mental , Humanos , Adolescente , Psicometria , Transtornos de Ansiedade , Prevalência
11.
J Glob Health ; 12: 04001, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35136594

RESUMO

BACKGROUND: Effective coverage measures aim to estimate the proportion of a population in need of a service that received a positive health outcome. In 2020, the Effective Coverage Think Tank Group recommended using a 'coverage cascade' for maternal, newborn, child and adolescent health and nutrition (MNCAHN), which organises components of effective coverage in a stepwise fashion, with each step accounting for different aspects of quality of care (QoC), applied at the population level. The cascade outlines six steps that increase the likelihood that the population in need experience the intended health benefit: 1) the population in need (target population) who contact a health service; 2) that has the inputs available to deliver the service; 3) who receive the health service; 4) according to quality standards; 5) and adhere to prescribed medication(s) or health workers instructions; and 6) experience the expected health outcome. We examined how effective coverage of life-saving interventions from childbirth to children aged nine has been defined and assessed which steps of the cascade are captured by existing measures. METHODS: We undertook a rapid systematic review. Seven scientific literature databases were searched covering the period from May 1, 2017 to July, 8 2021. Reference lists from reviews published in 2018 and 2019 were examined to identify studies published prior to May 2017. Eligible studies reported population-level contact coverage measures adjusted for at least one dimension of QoC. RESULTS: Based on these two search approaches this review includes literature published from 2010 to 2021. From 16 662 records reviewed, 33 studies were included, reporting 64 effective coverage measures. The most frequently examined measures were for childbirth and immediate newborn care (n = 24). No studies examined measures among children aged five to nine years. Definitions of effective coverage varied across studies. Key sources of variability included (i) whether a single effective coverage measure was reported for a package of interventions or separate measures were calculated for each intervention; (ii) the number and type of coverage cascade steps applied to adjust for QoC; and (iii) the individual items included in the effective coverage definition and the methods used to generate a composite quality measure. CONCLUSION: In the MNCAHN literature there is substantial heterogeneity in both definitions and construction of effective coverage, limiting the comparability of measures over time and place. Current measurement approaches are not closely aligned with the proposed cascade. For widespread adoption, there is a need for greater standardisation of indicator definitions and transparency in reporting, so governments can use these measures to improve investments in MNACHN and implement life-saving health policies and programs.


Assuntos
Saúde da Criança , Países em Desenvolvimento , Adolescente , Saúde do Adolescente , Criança , Pré-Escolar , Feminino , Humanos , Renda , Recém-Nascido , Gravidez , Qualidade da Assistência à Saúde
12.
Bull World Health Organ ; 88(1): 31-8, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20428351

RESUMO

OBJECTIVE: To analyse preterm birth rates worldwide to assess the incidence of this public health problem, map the regional distribution of preterm births and gain insight into existing assessment strategies. METHODS: Data on preterm birth rates worldwide were extracted during a previous systematic review of published and unpublished data on maternal mortality and morbidity reported between 1997 and 2002. Those data were supplemented through a complementary search covering the period 2003-2007. Region-specific multiple regression models were used to estimate the preterm birth rates for countries with no data. FINDINGS: We estimated that in 2005, 12.9 million births, or 9.6% of all births worldwide, were preterm. Approximately 11 million (85%) of these preterm births were concentrated in Africa and Asia, while about 0.5 million occurred in each of Europe and North America (excluding Mexico) and 0.9 million in Latin America and the Caribbean. The highest rates of preterm birth were in Africa and North America (11.9% and 10.6% of all births, respectively), and the lowest were in Europe (6.2%). CONCLUSION: Preterm birth is an important perinatal health problem across the globe. Developing countries, especially those in Africa and southern Asia, incur the highest burden in terms of absolute numbers, although a high rate is also observed in North America. A better understanding of the causes of preterm birth and improved estimates of the incidence of preterm birth at the country level are needed to improve access to effective obstetric and neonatal care.


Assuntos
Saúde Global , Mortalidade Materna , Nascimento Prematuro/epidemiologia , Saúde da Mulher , Países Desenvolvidos/estatística & dados numéricos , Países em Desenvolvimento/estatística & dados numéricos , Inquéritos Epidemiológicos , Humanos , Incidência
13.
Bull World Health Organ ; 88(3): 192-8, 2010 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20428386

RESUMO

OBJECTIVE: To describe the declining trend in maternal mortality observed in Mongolia from 1992 to 2007 and its acceleration after 2001 following implementation of the Maternal Mortality Reduction Strategy by the Ministry of Health and other partners. METHODS: We performed a descriptive analysis of maternal mortality data collected through Mongolia's vital registration system and provided by the Mongolian Ministry of Health. The observed declining mortality trend was analysed for statistical significance using simple linear regression. We present the maternal mortality ratios from 1992 to 2007 by year and review the basic components of Mongolia's Maternal Mortality Reduction Strategy for 2001-2004 and 2005-2010. FINDINGS: Mongolia achieved a statistically significant annual decrease in its maternal mortality ratio of almost 10 deaths per 100 000 live births over the period 1992-2007. From 2001 to 2007, the maternal mortality ratio in Mongolia decreased approximately 47%, from 169 to 89.6 deaths per 100 000 live births. CONCLUSION: Disparities in maternal mortality represent one of the major persisting health inequities between low- and high-resource countries. Nonetheless, important reductions in low-resource settings are possible through collaborative strategies based on a horizontal approach and the coordinated involvement of key partners, including health ministries, national and international agencies and donors, health-care professionals, the media, nongovernmental organizations and the general public.


Assuntos
Mortalidade Materna/tendências , Bases de Dados como Assunto , Feminino , Humanos , Mongólia/epidemiologia
14.
Am J Public Health ; 100(10): 1877-89, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20724669

RESUMO

We analyzed Brazil's efforts in reducing child mortality, improving maternal and child health, and reducing socioeconomic and regional inequalities from 1990 through 2007. We compiled and reanalyzed data from several sources, including vital statistics and population-based surveys. We also explored the roles of broad socioeconomic and demographic changes and the introduction of health sector and other reform measures in explaining the improvements observed. Our findings provide compelling evidence that proactive measures to reduce health disparities accompanied by socioeconomic progress can result in measurable improvements in the health of children and mothers in a relatively short interval. Our analysis of Brazil's successes and remaining challenges to reach and surpass Millennium Development Goals 4 and 5 can provide important lessons for other low- and middle-income countries.


Assuntos
Mortalidade da Criança/tendências , Mortalidade Infantil/tendências , Centros de Saúde Materno-Infantil/tendências , Brasil/epidemiologia , Causas de Morte/tendências , Criança , Pré-Escolar , Feminino , Disparidades nos Níveis de Saúde , Humanos , Lactente , Recém-Nascido , Mortalidade Materna/tendências , Estado Nutricional , Gravidez
15.
Am J Public Health ; 99(7): 1220-6, 2009 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19443831

RESUMO

OBJECTIVES: We analyzed trends in maternal, newborn, and child mortality in Chile between 1990 and 2004, after the introduction of national interventions and reforms, and examined associations between trends and interventions. METHODS: Data were provided by the Chilean Ministry of Health on all pregnancies between 1990 and 2004 (approximately 4,000,000). We calculated yearly maternal mortality ratios, stillbirth rates, and mortality rates for neonates, infants (aged > 28 days and < 1 year), and children aged 1 to 4 years. We also calculated these statistics by 5-year intervals for Chile's poorest to richest district quintiles. RESULTS: During the study period, the maternal mortality ratio decreased from 42.1 to 18.5 per 100,000 live births. The mortality rate for neonates decreased from 9.0 to 5.7 per 1000 births, for infants from 7.8 to 3.1 per 1000 births, and for young children from 3.1 to 1.7 per 1000 live births. The stillbirth rate declined from 6.0 to 5.0 per 1000 births. Disparities in these mortality statistics between the poorest and richest district quintiles also decreased, with the largest mortality reductions in the poorest quintile. CONCLUSIONS: During a period of socioeconomic development and health sector reforms, Chile experienced significant mortality and inequity reductions.


Assuntos
Mortalidade da Criança/tendências , Mortalidade Infantil/tendências , Mortalidade Materna/tendências , Distribuição de Qui-Quadrado , Pré-Escolar , Chile/epidemiologia , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Fatores de Risco , Fatores Socioeconômicos
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