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Featured researches published by Margaret C. Hogan.


The Lancet | 2010

Maternal mortality for 181 countries, 1980–2008: a systematic analysis of progress towards Millennium Development Goal 5

Margaret C. Hogan; Kyle Foreman; Mohsen Naghavi; Stephanie Y Ahn; Mengru Wang; Susanna Makela; Alan D. Lopez; Rafael Lozano; Christopher J L Murray

BACKGROUND Maternal mortality remains a major challenge to health systems worldwide. Reliable information about the rates and trends in maternal mortality is essential for resource mobilisation, and for planning and assessment of progress towards Millennium Development Goal 5 (MDG 5), the target for which is a 75% reduction in the maternal mortality ratio (MMR) from 1990 to 2015. We assessed levels and trends in maternal mortality for 181 countries. METHODS We constructed a database of 2651 observations of maternal mortality for 181 countries for 1980-2008, from vital registration data, censuses, surveys, and verbal autopsy studies. We used robust analytical methods to generate estimates of maternal deaths and the MMR for each year between 1980 and 2008. We explored the sensitivity of our data to model specification and show the out-of-sample predictive validity of our methods. FINDINGS We estimated that there were 342,900 (uncertainty interval 302,100-394,300) maternal deaths worldwide in 2008, down from 526,300 (446,400-629,600) in 1980. The global MMR decreased from 422 (358-505) in 1980 to 320 (272-388) in 1990, and was 251 (221-289) per 100,000 livebirths in 2008. The yearly rate of decline of the global MMR since 1990 was 1.3% (1.0-1.5). During 1990-2008, rates of yearly decline in the MMR varied between countries, from 8.8% (8.7-14.1) in the Maldives to an increase of 5.5% (5.2-5.6) in Zimbabwe. More than 50% of all maternal deaths were in only six countries in 2008 (India, Nigeria, Pakistan, Afghanistan, Ethiopia, and the Democratic Republic of the Congo). In the absence of HIV, there would have been 281 500 (243,900-327,900) maternal deaths worldwide in 2008. INTERPRETATION Substantial, albeit varied, progress has been made towards MDG 5. Although only 23 countries are on track to achieve a 75% decrease in MMR by 2015, countries such as Egypt, China, Ecuador, and Bolivia have been achieving accelerated progress. FUNDING Bill & Melinda Gates Foundation.


The Lancet | 2010

India's Janani Suraksha Yojana, a conditional cash transfer programme to increase births in health facilities: an impact evaluation

Stephen S Lim; Lalit Dandona; Joseph A Hoisington; Spencer L. James; Margaret C. Hogan; Emmanuela Gakidou

BACKGROUND In 2005, with the goal of reducing the numbers of maternal and neonatal deaths, the Government of India launched Janani Suraksha Yojana (JSY), a conditional cash transfer scheme, to incentivise women to give birth in a health facility. We independently assessed the effect of JSY on intervention coverage and health outcomes. METHODS We used data from the nationwide district-level household surveys done in 2002-04 and 2007-09 to assess receipt of financial assistance from JSY as a function of socioeconomic and demographic characteristics; and used three analytical approaches (matching, with-versus-without comparison, and differences in differences) to assess the effect of JSY on antenatal care, in-facility births, and perinatal, neonatal, and maternal deaths. FINDINGS Implementation of JSY in 2007-08 was highly variable by state-from less than 5% to 44% of women giving birth receiving cash payments from JSY. The poorest and least educated women did not always have the highest odds of receiving JSY payments. JSY had a significant effect on increasing antenatal care and in-facility births. In the matching analysis, JSY payment was associated with a reduction of 3.7 (95% CI 2.2-5.2) perinatal deaths per 1000 pregnancies and 2.3 (0.9-3.7) neonatal deaths per 1000 livebirths. In the with-versus-without comparison, the reductions were 4.1 (2.5-5.7) perinatal deaths per 1000 pregnancies and 2.4 (0.7-4.1) neonatal deaths per 1000 livebirths. INTERPRETATION The findings of this assessment are encouraging, but they also emphasise the need for improved targeting of the poorest women and attention to quality of obstetric care in health facilities. Continued independent monitoring and evaluations are important to measure the effect of JSY as financial and political commitment to the programme intensifies. FUNDING Bill & Melinda Gates Foundation.


The Lancet | 2016

Guidelines for Accurate and Transparent Health Estimates Reporting: the GATHER statement

Gretchen A Stevens; Leontine Alkema; Robert E. Black; J. Ties Boerma; Gary S. Collins; Majid Ezzati; John Grove; Daniel R Hogan; Margaret C. Hogan; Richard Horton; Joy E Lawn; Ana Marušić; Colin Mathers; Christopher J L Murray; Igor Rudan; Joshua A. Salomon; Paul J. Simpson; Theo Vos; Vivian Welch

Measurements of health indicators are rarely available for every population and period of interest, and available data may not be comparable. The Guidelines for Accurate and Transparent Health Estimates Reporting (GATHER) define best reporting practices for studies that calculate health estimates for multiple populations (in time or space) using multiple information sources. Health estimates that fall within the scope of GATHER include all quantitative population-level estimates (including global, regional, national, or subnational estimates) of health indicators, including indicators of health status, incidence and prevalence of diseases, injuries, and disability and functioning; and indicators of health determinants, including health behaviours and health exposures. GATHER comprises a checklist of 18 items that are essential for best reporting practice. A more detailed explanation and elaboration document, describing the interpretation and rationale of each reporting item along with examples of good reporting, is available on the GATHER website.


PLOS Medicine | 2010

Measuring adult mortality using sibling survival: a new analytical method and new results for 44 countries, 1974-2006.

Ziad Obermeyer; Julie Knoll Rajaratnam; Chang H. Park; Emmanuela Gakidou; Margaret C. Hogan; Alan D. Lopez; Christopher J. L. Murray

Julie Rajaratnam and colleagues describe a novel method, called the Corrected Sibling Survival method, to measure adult mortality in countries without good vital registration by use of histories taken from surviving siblings.


Obesity | 2007

Trends in Obesity and Associations with Education and Urban or Rural Residence in Thailand

Wichai Aekplakorn; Margaret C. Hogan; Virasakdi Chongsuvivatwong; Pyatat Tatsanavivat; Suwat Chariyalertsak; Angsana Boonthum; Siriwat Tiptaradol; Stephen S Lim

Objective: To measure trends in the prevalence of overweight and obesity and the relationship with urban or rural residence and education in Thailand.


The Lancet | 2007

Reductions in child mortality levels and inequalities in Thailand: analysis of two censuses

Patama Vapattanawong; Margaret C. Hogan; Piya Hanvoravongchai; Emmanuela Gakidou; Theo Vos; Alan D. Lopez; Stephen S Lim

BACKGROUND Thailands progress in reducing the under-five mortality rate (U5MR) puts the country on track to achieve the fourth Millennium Development Goal (MDG). Whether this success has been accompanied by a widening or narrowing of the child mortality gap between the poorest and richest populations is unknown. We aimed to measure changes in child-mortality inequalities by household-level socioeconomic strata of the Thai population between 1990 and 2000. METHODS We measured changes in the distribution of the U5MR by economic strata using data from the 1990 and 2000 censuses. Economic status was measured using household assets and characteristics. The U5MR was estimated using the Trussell version of the Brass indirect method. FINDINGS Average household economic status improved and inequalities declined between the two censuses. There were substantially larger reductions in U5MR in the poorer segments of the population. Excess child mortality risk between the poorest and richest quintile decreased by 55% (95% CI 39% to 68%). The concentration index, measured using percentiles of economic status, in 1990 was -0.20 (-0.23 to -0.18), whereas in 2000 it had dropped to -0.12 (-0.15 to -0.08), a 43% (22% to 63%) reduction. INTERPRETATION These findings draw attention to the feasibility of incorporating equity measurement into census data. Thailand has achieved both an impressive average decrease in U5MR and substantial reductions in U5MR inequality over a 10 year period. Contributing factors include overall economic growth and poverty reduction, improved insurance coverage, and a scaling-up and more equitable distribution of primary health-care infrastructure and intervention coverage. Understanding the factors that have led to Thailands success could help inform countries struggling to meet the fourth MDG and reduce inequality.


Bulletin of The World Health Organization | 2016

Reclassifying causes of obstetric death in Mexico: a repeated cross-sectional study.

Margaret C. Hogan; Biani Saavedra-Avendano; Blair G. Darney; Luis M. Torres-Palacios; Ana L. Rhenals-Osorio; Bertha L. Vázquez Sierra; Patricia N. Soliz-Sánchez; Emmanuela Gakidou; Rafael Lozano

Abstract Objective To describe causes of maternal mortality in Mexico over eight years, with particular attention to indirect obstetric deaths and socioeconomic disparities. Methods We conducted a repeated cross-sectional study using the 2006–2013 Búsqueda intencionada y reclasificación de muertes maternas (BIRMM) data set. We used frequencies to describe new cases, cause distributions and the reclassification of maternal mortality cases by the BIRMM process. We used statistical tests to analyse differences in sociodemographic characteristics between direct and indirect deaths and differences in the proportion of overall direct and indirect deaths, by year and by municipality poverty level. Findings A total of 9043 maternal deaths were subjected to the review process. There was a 13% increase (from 7829 to 9043) in overall identified maternal deaths and a threefold increase in the proportion of maternal deaths classified as late maternal deaths (from 2.1% to 6.9%). Over the study period direct obstetric deaths declined, while there was no change in deaths from indirect obstetric causes. Direct deaths were concentrated in women who lived in the poorest municipalities. When compared to those dying of direct causes, women dying of indirect causes had fewer pregnancies and were slightly younger, better educated and more likely to live in wealthier municipalities. Conclusion The BIRMM is one approach to correct maternal death statistics in settings with poor resources. The approach could help the health system to rethink its strategy to reduce maternal deaths from indirect obstetric causes, including prevention of unwanted pregnancies and improvement of antenatal and post-obstetric care.


Asia-Pacific Journal of Public Health | 2012

Joint prevalence and control of hypercholesterolemia and hypertension in Thailand: third national health examination survey.

Panrasri Khonputsa; J. Lennert Veerman; Theo Vos; Wichai Aekplakorn; Melanie Bertram; Jesse Abbott-Klafter; Margaret C. Hogan; Stephen S Lim

The prevalence, diagnosis, treatment, and control of hypercholesterolemia and/or hypertension were estimated for Thailand using data from a recent, nationally representative health examination survey. Multivariate logistic regression was used to assess factors associated with diagnosis, treatment, and control. In all, 14% of men and 17% of women had hypercholesterolemia, 23% and 21% had hypertension, and 5% and 6%, respectively, had both. A large proportion of individuals with these risk factors is neither diagnosed nor treated, let alone adequately controlled; 30% of people with hypertension had been diagnosed and 24% treated, and 9% had their blood pressure controlled. The figures for hypercholesterolemia were 13%, 9%, and 6%, respectively. Those for both risk factors combined were below 15% and did not differ by sex, urbanicity, age, or marital status. Among men, education correlated with diagnosis and treatment odds. There is great scope for improved prevention of cardiovascular disease in Thailand.


Bulletin of The World Health Organization | 2016

Reclasificación de las causas de muerte obstétrica en México

Margaret C. Hogan; Biani Saavedra-Avendano; Blair G. Darney; Luis M. Torres-Palacios; Ana L. Rhenals-Osorio; Bertha L. Vázquez Sierra; Patricia N. Soliz-Sánchez; Emmanuela Gakidou; Rafael Lozano

Abstract Objective To describe causes of maternal mortality in Mexico over eight years, with particular attention to indirect obstetric deaths and socioeconomic disparities. Methods We conducted a repeated cross-sectional study using the 2006–2013 Búsqueda intencionada y reclasificación de muertes maternas (BIRMM) data set. We used frequencies to describe new cases, cause distributions and the reclassification of maternal mortality cases by the BIRMM process. We used statistical tests to analyse differences in sociodemographic characteristics between direct and indirect deaths and differences in the proportion of overall direct and indirect deaths, by year and by municipality poverty level. Findings A total of 9043 maternal deaths were subjected to the review process. There was a 13% increase (from 7829 to 9043) in overall identified maternal deaths and a threefold increase in the proportion of maternal deaths classified as late maternal deaths (from 2.1% to 6.9%). Over the study period direct obstetric deaths declined, while there was no change in deaths from indirect obstetric causes. Direct deaths were concentrated in women who lived in the poorest municipalities. When compared to those dying of direct causes, women dying of indirect causes had fewer pregnancies and were slightly younger, better educated and more likely to live in wealthier municipalities. Conclusion The BIRMM is one approach to correct maternal death statistics in settings with poor resources. The approach could help the health system to rethink its strategy to reduce maternal deaths from indirect obstetric causes, including prevention of unwanted pregnancies and improvement of antenatal and post-obstetric care.


Bulletin of The World Health Organization | 2016

Reclasificación de las causas de muerte obstétrica en México: Un estudio transversal repetido

Margaret C. Hogan; Biani Saavedra-Avendano; Blair G. Darney; Luis M. Torres-Palacios; Ana L. Rhenals-Osorio; Bertha L. Vázquez Sierra; Patricia N. Soliz-Sánchez; Emmanuela Gakidou; Rafael Lozano

Abstract Objective To describe causes of maternal mortality in Mexico over eight years, with particular attention to indirect obstetric deaths and socioeconomic disparities. Methods We conducted a repeated cross-sectional study using the 2006–2013 Búsqueda intencionada y reclasificación de muertes maternas (BIRMM) data set. We used frequencies to describe new cases, cause distributions and the reclassification of maternal mortality cases by the BIRMM process. We used statistical tests to analyse differences in sociodemographic characteristics between direct and indirect deaths and differences in the proportion of overall direct and indirect deaths, by year and by municipality poverty level. Findings A total of 9043 maternal deaths were subjected to the review process. There was a 13% increase (from 7829 to 9043) in overall identified maternal deaths and a threefold increase in the proportion of maternal deaths classified as late maternal deaths (from 2.1% to 6.9%). Over the study period direct obstetric deaths declined, while there was no change in deaths from indirect obstetric causes. Direct deaths were concentrated in women who lived in the poorest municipalities. When compared to those dying of direct causes, women dying of indirect causes had fewer pregnancies and were slightly younger, better educated and more likely to live in wealthier municipalities. Conclusion The BIRMM is one approach to correct maternal death statistics in settings with poor resources. The approach could help the health system to rethink its strategy to reduce maternal deaths from indirect obstetric causes, including prevention of unwanted pregnancies and improvement of antenatal and post-obstetric care.

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Stephen S Lim

University of Queensland

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Rafael Lozano

University of Washington

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Theo Vos

University of Queensland

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Majid Ezzati

Imperial College London

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Colin Mathers

World Health Organization

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Daniel R Hogan

World Health Organization

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J. Ties Boerma

World Health Organization

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