Full Text Journal Articles by
Author Sebastian Vollmer

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Pregnancy anaemia, child health and development: a cohort study in rural India.

Esther Heesemann, Claudia Mähler, Malavika A Subramanyam, Sebastian Vollmer,

To assess how pregnancy anaemia affects the offspring's early childhood development, child haemoglobin (Hb) levels child growth and diseases incidence 2 years after birth in a low-income setting. Furthermore, we investigate the mediating role of childhood Hb levels with disease incidences and skills. Prospective cohort study. The study participants are 941-999 ... Read more >>

BMJ Open (BMJ open)
[2021, 11(11):e046802]

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Trends in 28-Day Mortality of Critical Care Patients With Coronavirus Disease 2019 in the United Kingdom: A National Cohort Study, March 2020 to January 2021.

John M Dennis, Andrew P McGovern, Nicholas J Thomas, Harrison Wilde, Sebastian J Vollmer, Bilal A Mateen,

<h4>Objectives</h4>To determine whether the previously described trend of improving mortality in people with coronavirus disease 2019 in critical care during the first wave was maintained, plateaued, or reversed during the second wave in United Kingdom, when B117 became the dominant strain.<h4>Design</h4>National retrospective cohort study.<h4>Setting</h4>All English hospital trusts (i.e., groups of ... Read more >>

Crit Care Med (Critical care medicine)
[2021, 49(11):1895-1900]

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Derivation and validation of a type 2 diabetes treatment selection algorithm for SGLT2-inhibitor and DPP4-inhibitor therapies based on glucose-lowering efficacy: cohort study using trial and routine clinical data

John Dennis, Katherine Young, Andrew McGovern, Bilal Mateen, Sebastian Vollmer, Michael Simpson, William Henley, Rury Holman, Naveed Sattar, Ewan Pearson, Andrew Hattersley, Angus Jones, Beverley Shields,

<h4>Objective</h4> To establish whether clinical patient characteristics routinely measured in primary care can identify people with differing short-term benefits and risks for SGLT2-inhibitor and DPP4-inhibitor therapies, and to derive and validate a treatment selection algorithm to identify the likely optimal therapy for individual patients. <h4>Design</h4> Prospective cohort study. <h4>Setting</h4> Routine ... Read more >>

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Maternal Iron-and-Folic-Acid Supplementation and its Association with Low-birthweight and Neonatal Mortality in India.

Rajesh Kumar Rai, Jan-Walter De Neve, Pascal Geldsetzer, Sebastian Vollmer,

<h4>Objective</h4>This study assessed intake of iron-and-folic-acid (IFA) tablet/syrup (grouped into none, <100 days of IFA consumption or <100 IFA, and ≥100 days of IFA consumption or ≥100 IFA) among prospective mothers and its association with various stages of low-birthweight (ELBW: extremely low-birthweight, VLBW: very low-birthweight, and LBW: low-birthweight) and neonatal ... Read more >>

Public Health Nutr (Public health nutrition)
[2021, :1-29]

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The effect of bearing and rearing a child on blood pressure: a nationally representative instrumental variable analysis of 444 611 mothers in India.

Felix Teufel, Pascal Geldsetzer, Nikkil Sudharsanan, Malavika Subramanyam, H Manisha Yapa, Jan-Walter De Neve, Sebastian Vollmer, Till Bärnighausen,

<h4>Background</h4>At the individual level, it is well known that pregnancies have a short-term effect on a woman's cardiovascular system and blood pressure. The long-term effect of having children on maternal blood pressure, however, is unknown. We thus estimated the causal effect of having children on blood pressure among mothers in ... Read more >>

Int J Epidemiol (International journal of epidemiology)
[2021, 50(5):1671-1683]

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Unmet need for hypercholesterolemia care in 35 low- and middle-income countries: A cross-sectional study of nationally representative surveys.

Maja E Marcus, Cara Ebert, Pascal Geldsetzer, Michaela Theilmann, Brice Wilfried Bicaba, Glennis Andall-Brereton, Pascal Bovet, Farshad Farzadfar, Mongal Singh Gurung, Corine Houehanou, Mohammad-Reza Malekpour, Joao S Martins, Sahar Saeedi Moghaddam, Esmaeil Mohammadi, Bolormaa Norov, Sarah Quesnel-Crooks, Roy Wong-McClure, Justine I Davies, Mark A Hlatky, Rifat Atun, Till W Bärnighausen, Lindsay M Jaacks, Jennifer Manne-Goehler, Sebastian Vollmer,

<h4>Background</h4>As the prevalence of hypercholesterolemia is increasing in low- and middle-income countries (LMICs), detailed evidence is urgently needed to guide the response of health systems to this epidemic. This study sought to quantify unmet need for hypercholesterolemia care among adults in 35 LMICs.<h4>Methods and findings</h4>We pooled individual-level data from 129,040 ... Read more >>

PLoS Med (PLoS medicine)
[2021, 18(10):e1003841]

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The 4MOTHERS trial of the impact of a mobile money-based intervention on maternal and neonatal health outcomes in Madagascar: study protocol of a cluster-randomized hybrid effectiveness-implementation trial.

Etienne Lacroze, Till Bärnighausen, Jan Walter De Neve, Sebastian Vollmer, Rolland Marie Ratsimbazafy, Peter Martin Ferdinand Emmrich, Nadine Muller, Elsa Rajemison, Zavaniarivo Rampanjato, Diana Ratsiambakaina, Samuel Knauss, Julius Valentin Emmrich,

<h4>Background</h4>Mobile money-a service enabling users to receive, store, and send electronic money using mobile phones-has been widely adopted across low- and middle-income economies to pay for a variety of services, including healthcare. However, evidence on its effects on healthcare access and health outcomes are scarce and the possible implications of ... Read more >>

Trials (Trials)
[2021, 22(1):725]

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The association between mechanical ventilator compatible bed occupancy and mortality risk in intensive care patients with COVID-19: a national retrospective cohort study.

Harrison Wilde, Thomas Mellan, Iwona Hawryluk, John M Dennis, Spiros Denaxas, Christina Pagel, Andrew Duncan, Samir Bhatt, Seth Flaxman, Bilal A Mateen, Sebastian J Vollmer,

<h4>Background</h4>The literature paints a complex picture of the association between mortality risk and ICU strain. In this study, we sought to determine if there is an association between mortality risk in intensive care units (ICU) and occupancy of beds compatible with mechanical ventilation, as a proxy for strain.<h4>Methods</h4>A national retrospective ... Read more >>

BMC Med (BMC medicine)
[2021, 19(1):213]

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Public opinion on global distribution of COVID-19 vaccines: evidence from two nationally representative surveys in Germany and the United States

Matthias Klumpp, Ida Monfared, Sebastian Vollmer,

<h4>Background</h4> Despite ongoing calls for more equity in the global distribution of COVID-19 vaccines, there remains a great disparity between high- and low- or middle-income countries. Based on the principles of distributive justice, we assessed the public opinion on this issue in the United States and Germany as examples for ... Read more >>

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Tracking development assistance for health and for COVID-19: a review of development assistance, government, out-of-pocket, and other private spending on health for 204 countries and territories, 1990-2050.

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<h4>Background</h4>The rapid spread of COVID-19 renewed the focus on how health systems across the globe are financed, especially during public health emergencies. Development assistance is an important source of health financing in many low-income countries, yet little is known about how much of this funding was disbursed for COVID-19. We ... Read more >>

Lancet (Lancet (London, England))
[2021, 398(10308):1317-1343]

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Estimated effect of increased diagnosis, treatment, and control of diabetes and its associated cardiovascular risk factors among low-income and middle-income countries: a microsimulation model.

Sanjay Basu, David Flood, Pascal Geldsetzer, Michaela Theilmann, Maja E Marcus, Cara Ebert, Mary Mayige, Roy Wong-McClure, Farshad Farzadfar, Sahar Saeedi Moghaddam, Kokou Agoudavi, Bolormaa Norov, Corine Houehanou, Glennis Andall-Brereton, Mongal Gurung, Garry Brian, Pascal Bovet, Joao Martins, Rifat Atun, Till Bärnighausen, Sebastian Vollmer, Jen Manne-Goehler, Justine Davies,

<h4>Background</h4>Given the increasing prevalence of diabetes in low-income and middle-income countries (LMICs), we aimed to estimate the health and cost implications of achieving different targets for diagnosis, treatment, and control of diabetes and its associated cardiovascular risk factors among LMICs.<h4>Methods</h4>We constructed a microsimulation model to estimate disability-adjusted life-years (DALYs) lost ... Read more >>

Lancet Glob Health (The Lancet. Global health)
[2021, 9(11):e1539-e1552]

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Socio-economic predictors of undernutrition and anaemia in adolescent mothers in West and Central Africa.

Vera Sagalova, Sebastian Vollmer, John Ntambi, Roger Sodjinou, Aline Simen-Kapeu, Till Bärnighausen, Noel Marie Zagre, Simeon Nanama,

<h4>Background</h4>Adolescence is a formative period when an individual acquires physical, cognitive, emotional, and social resources that are the foundation for later life, health, and well-being [1]. However, in West and Central African region, this trajectory is curtailed by early childbearing associated with an increased risk of undernutrition and anemia. Evidence ... Read more >>

J Glob Health (Journal of global health)
[2021, 11:13007]

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Socio-economic predictors of adolescent marriage and maternity in West and Central Africa between 1986 and 2017.

Vera Sagalova, Jonathan Garcia, Aline Simen Kapeu, John Ntambi, Noel Marie Zagre, Sebastian Vollmer,

<h4>Background</h4>Early marriage and maternity prevalence rates among adolescent girls remain alarmingly high in West and Central Africa (WCA). This study aims to explore the associations between socio-economic factors and the prevalence of early marriage and maternity, thus contributing to the identification of girls at risk of early pregnancy or marriage.<h4>Methods</h4>We ... Read more >>

J Glob Health (Journal of global health)
[2021, 11:13002]

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Prevalence of diarrhoea, acute respiratory infections, and malaria over time (1995-2017): A regional analysis of 23 countries in West and Central Africa.

Aline Simen-Kapeu, Lisa Bogler, Ann-Charline Weber, John Ntambi, Noel Marie Zagre, Sebastian Vollmer, Rene Ehounou Ekpini,

<h4>Backgound</h4>The global community recognizes the urgent need to end preventable child deaths, making it an essential part of the third Sustainable Development Goal. Pneumonia, diarrhoea, and malaria still remain the leading causes of deaths among children under five years, especially in one of the poorest geographic regions of the world ... Read more >>

J Glob Health (Journal of global health)
[2021, 11:13008]

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Does early childbearing affect utilization of antenatal care services and infant birth weight: Evidence from West and Central African Region.

Vera Sagalova, Anne-Sophie Le Dain, Till Bärnighausen, Noel Marie Zagre, Sebastian Vollmer,

<h4>Background</h4>Adequate antenatal care (ANC) utilization is recognized as one of the important drivers of safe childbirth and positive birth outcomes. The usage of ANC services fluctuates with various personal, socio-economic, and cultural characteristics and in resource-poor settings, adolescent mothers are at a particularly high risk of insufficient ANC utilization.<h4>Objectives</h4>This paper ... Read more >>

J Glob Health (Journal of global health)
[2021, 11:13003]

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Health-care seeking for childhood diseases by parental age in Western and Central Africa between 1995 and 2017: A descriptive analysis using DHS and MICS from 23 low- and middle-income countries.

Lisa Bogler, Ann-Charline Weber, John Ntambi, Aline Simen-Kapeu, Noel Marie Zagre, Rene Ehounou Ekpini, Sebastian Vollmer,

<h4>Background</h4>Globally, health care seeking for childhood diseases seems to be on the rise. However, progress is slow and still, many cases of infectious diseases in children remain untreated, leading to preventable child mortality. A better understanding of care seeking behaviour may help to further increase the probability that a sick ... Read more >>

J Glob Health (Journal of global health)
[2021, 11:13010]

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Correlates of HIV seropositivity in young West and Central African women: A pooled analysis of 17 Demographic and Health Surveys.

Christian Bommer, Sebastian Vollmer, Noël Marie Zagre,

<h4>Background</h4>Young women in West and Central Africa have been described by the United Nations as being especially vulnerable to HIV/AIDS. Despite a consensus that increased efforts are necessary to address the needs of this particular demographic, correlates of HIV seropositivity in young West and Central African women have not been ... Read more >>

J Glob Health (Journal of global health)
[2021, 11:13005]

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The wealth gradient in diarrhoea, acute respiratory infections, and malaria in childhood over time: A descriptive analysis using DHS and MICS from Western and Central Africa between 1995 and 2017.

Ann-Charline Weber, Lisa Bogler, Sebastian Vollmer, Aline Simen-Kapeu, Rene Ehounou Ekpini, Noel Marie Zagre,

<h4>Background</h4>While the prevalence of childhood diseases and related mortality have been decreasing over the past decades, progress has been unequally distributed. The poorest households often carry the highest disease burden. As morbidity and mortality also decline most slowly among children of the poorest households, socioeconomic status may become a more ... Read more >>

J Glob Health (Journal of global health)
[2021, 11:13009]

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Long-term consequences of early marriage and maternity in West and Central Africa: Wealth, education, and fertility.

Vera Sagalova, Siméon Nanama, Noel Marie Zagre, Sebastian Vollmer,

<h4>Objective</h4>Early marriage and childbearing have substantial detrimental effects on both, the affected girls and women at the micro level, as well as entire economies on the macro level. West and Central African countries have some of the highest prevalence rates of early marriage and maternity worldwide. This work attempts to ... Read more >>

J Glob Health (Journal of global health)
[2021, 11:13004]

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Levels and trends of adolescent girl's undernutrition and anemia in West and Central Africa from 1998 to 2017.

Anne-Sophie Le Dain, Vera Sagalova, Roger Sodjinou, El Hassane Tou, John Ntambi, Sebastian Vollmer, Noel Marie Zagre,

<h4>Background</h4>Adolescence is a highly vulnerable period of human life characterized by substantial physiological and cognitive changes for which adequate nutrition is crucial. To date, evidence on determinants, prevalence, and trends of undernutrition and anemia for the entire West and Central African region is missing. This paper provides evidence on trends ... Read more >>

J Glob Health (Journal of global health)
[2021, 11:13006]

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Levels and trends of adolescent marriage and maternity in West and Central Africa, 1986-2017.

Vera Sagalova, Jonathan Garcia, Till Bärnighausen, John Ntambi, Roger Sodjinou, Noel Marie Zagre, Sebastian Vollmer,

<h4>Background</h4>The world has made considerable progress in the reduction of adolescent maternity and early marriage. However, this progress has been uneven, with many countries finding themselves far from achieving the Sustainable Development Goals in this dimension. We assessed levels and trends over time in adolescent marriage and maternity prevalence within ... Read more >>

J Glob Health (Journal of global health)
[2021, 11:13001]

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Development and assessment of a machine learning tool for predicting emergency admission in Scotland

James Liley, Gergo Bohner, Samuel Emerson, Bilal Mateen, Katie Borland, David Carr, Scott Heald, Samuel Oduro, Jill Ireland, Keith Moffat, Rachel Porteous, Stephen Riddell, Nathan Cunningham, Chris Holmes, Katrina Payne, Sebastian Vollmer, Catalina Vallejos, Louis Aslett,

<h4>ABSTRACT</h4> Avoiding emergency hospital admission (EA) is advantageous to individual health and the healthcare system. We develop a statistical model estimating risk of EA for most of the Scottish population (> 4.8 M individuals) using electronic health records, such as hospital episodes and prescribing activity. We demonstrate good predictive accuracy ... Read more >>

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Assessment of Undernutrition Among Children in 55 Low- and Middle-Income Countries Using Dietary and Anthropometric Measures.

Markus Heemann, Rockli Kim, Sebastian Vollmer, S V Subramanian,

<h4>Importance</h4>Evidence on the suitability of anthropometric failure (ie, stunting, underweight, and wasting) as a stand-alone measure of child undernutrition can inform global and national nutrition and health agendas.<h4>Objective</h4>To provide a comprehensive estimate of the prevalence of child undernutrition by evaluating both dietary and anthropometric measures simultaneously across 55 low- and ... Read more >>

JAMA Netw Open (JAMA network open)
[2021, 4(8):e2120627]

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A national retrospective study of the association between serious operational problems and COVID-19 specific intensive care mortality risk.

Harrison Wilde, John M Dennis, Andrew P McGovern, Sebastian J Vollmer, Bilal A Mateen,

<h4>Objectives</h4>To describe the relationship between reported serious operational problems (SOPs), and mortality for patients with COVID-19 admitted to intensive care units (ICUs).<h4>Design</h4>English national retrospective cohort study.<h4>Setting</h4>89 English hospital trusts (i.e. small groups of hospitals functioning as single operational units).<h4>Patients</h4>All adults with COVID-19 admitted to ICU between 2nd April and 1st ... Read more >>

PLoS One (PloS one)
[2021, 16(7):e0255377]

Cited: 1 time

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Measuring routine childhood vaccination coverage in 204 countries and territories, 1980-2019: a systematic analysis for the Global Burden of Disease Study 2020, Release 1.

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<h4>Background</h4>Measuring routine childhood vaccination is crucial to inform global vaccine policies and programme implementation, and to track progress towards targets set by the Global Vaccine Action Plan (GVAP) and Immunization Agenda 2030. Robust estimates of routine vaccine coverage are needed to identify past successes and persistent vulnerabilities. Drawing from the ... Read more >>

Lancet (Lancet (London, England))
[2021, 398(10299):503-521]

Cited: 1 time

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