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O. Campbell · SciRah

Researcher profile · Semantic Scholar

O. Campbell

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O. Campbell — researcher profile on SciRah

h-index: 46
Works: 134
Citations: 7,499

Most-cited papers

Quality maternity care for every woman, everywhere: a call to action.
M. Koblinsky, C. Moyer, C. Calvert, James Campbell +10 more
2016The Lancet447 citations Open access
Semantic Scholar
The Influence of Distance and Level of Care on Delivery Place in Rural Zambia: A Study of Linked National Data in a Geographic Information System
S. Gabrysch, S. Cousens, J. Cox, O. Campbell
2011PLoS Medicine363 citations Open access
Semantic Scholar
The Millennium Development Goals: a cross-sectoral analysis and principles for goal setting after 2015
J. Waage, R. Banerji, O. Campbell, E. Chirwa +15 more
2010The Lancet299 citations Open access
Semantic Scholar
Voices from the frontline: findings from a thematic analysis of a rapid online global survey of maternal and newborn health professionals facing the COVID-19 pandemic
A. Semaan, C. Audet, E. Huysmans, B. Afolabi +20 more
2020BMJ Global Health251 citations Open access
Semantic Scholar
Not just a number: examining coverage and content of antenatal care in low-income and middle-income countries
L. Beňová, Ö. Tunçalp, A. Moran, O. Campbell
2018BMJ Global Health245 citations Open access
Semantic Scholar
Length of Stay After Childbirth in 92 Countries and Associated Factors in 30 Low- and Middle-Income Countries: Compilation of Reported Data and a Cross-sectional Analysis from Nationally Representative Surveys
O. Campbell, L. Cegolon, D. Macleod, L. Beňová
2016PLoS Medicine197 citations Open access
Semantic Scholar
Impact of Free Delivery Care on Health Facility Delivery and Insurance Coverage in Ghana’s Brong Ahafo Region
S. Dzakpasu, S. Soremekun, A. Manu, G. ten Asbroek +7 more
2012PLoS ONE181 citations Open access
Semantic Scholar
Impact of user fees on maternal health service utilization and related health outcomes: a systematic review.
S. Dzakpasu, T. Powell-Jackson, O. Campbell
2014Health Policy and Planning180 citations Open access
Semantic Scholar
Incidence and risk factors for postpartum hemorrhage in Uganda
S. Ononge, F. Mirembe, Julius Wandabwa, O. Campbell
2016Reproductive Health166 citations Open access
Semantic Scholar
Distance to Care, Facility Delivery and Early Neonatal Mortality in Malawi and Zambia
T. Lohela, O. Campbell, S. Gabrysch
2012PLoS ONE149 citations Open access
Semantic Scholar
New Signal Functions to Measure the Ability of Health Facilities to Provide Routine and Emergency Newborn Care
S. Gabrysch, G. Civitelli, K. Edmond, M. Mathai +3 more
2012PLoS Medicine134 citations Open access
Semantic Scholar
Does facility birth reduce maternal and perinatal mortality in Brong Ahafo, Ghana? A secondary analysis using data on 119 244 pregnancies from two cluster-randomised controlled trials
S. Gabrysch, R. Nesbitt, Anja Schoeps, L. Hurt +8 more
2019Lancet Global Health115 citations Open access
Semantic Scholar
Effect of vitamin A supplementation in women of reproductive age on maternal survival in Ghana (ObaapaVitA): a cluster-randomised, placebo-controlled trial.
B. Kirkwood, L. Hurt, S. Amenga‐Etego, C. Tawiah +10 more
2010The Lancet109 citations
Semantic Scholar
Getting the basic rights – the role of water, sanitation and hygiene in maternal and reproductive health: a conceptual framework
O. Campbell, L. Beňová, G. Gon, K. Afsana +1 more
2014Tropical medicine & international health99 citations Open access
Semantic Scholar
Referrals between Public Sector Health Institutions for Women with Obstetric High Risk, Complications, or Emergencies in India – A Systematic Review
Samiksha Singh, P. Doyle, O. Campbell, Manu E. Mathew +1 more
2016PLoS ONE93 citations Open access
Semantic Scholar
Do Girls Have a Nutritional Disadvantage Compared with Boys? Statistical Models of Breastfeeding and Food Consumption Inequalities among Indian Siblings
Jasmine Fledderjohann, S. Agrawal, Sukumar Vellakkal, S. Basu +4 more
2014PLoS ONE83 citations Open access
Semantic Scholar
Provision of postpartum care to women giving birth in health facilities in sub-Saharan Africa: A cross-sectional study using Demographic and Health Survey data from 33 countries
L. Beňová, O. Owolabi, Emma Radovich, Kerry L. M. Wong +3 more
2019PLoS Medicine80 citations Open access
Semantic Scholar
From Joint Thinking to Joint Action: A Call to Action on Improving Water, Sanitation, and Hygiene for Maternal and Newborn Health
Y. Velleman, Elizabeth Mason, W. Graham, L. Beňová +12 more
2014PLoS Medicine80 citations Open access
Semantic Scholar
Two decades of antenatal and delivery care in Uganda: a cross-sectional study using Demographic and Health Surveys
L. Beňová, Mardieh L. Dennis, I. Lange, O. Campbell +12 more
2018BMC Health Services Research79 citations Open access
Semantic Scholar
The effectiveness of birth plans in increasing use of skilled care at delivery and postnatal care in rural Tanzania: a cluster randomised trial
Moke Magoma, Jennifer Requejo, O. Campbell, S. Cousens +2 more
2013Tropical medicine & international health79 citations
Semantic Scholar
A look back on how far to walk: Systematic review and meta-analysis of physical access to skilled care for childbirth in Sub-Saharan Africa
Kerry L. M. Wong, L. Beňová, O. Campbell
2017PLoS ONE77 citations Open access
Semantic Scholar
Maternal mortality, stillbirths, and neonatal mortality: a transition model based on analyses of 151 countries
T. Boerma, O. Campbell, A. Amouzou, C. Blumenberg +4 more
2023Lancet Global Health75 citations Open access
Semantic Scholar
The global burden of perinatal common mental health disorders and substance use among migrant women: a systematic review and meta-analysis.
Kerrie Stevenson, G. Fellmeth, Samuel Edwards, C. Calvert +3 more
2023Lancet Public Health72 citations Open access
Semantic Scholar
Quantifying the fall in mortality associated with interventions related to hypertensive diseases of pregnancy
C. Ronsmans, O. Campbell
2011BMC Public Health71 citations Open access
Semantic Scholar
Early breastfeeding practices: Descriptive analysis of recent Demographic and Health Surveys
L. Oakley, L. Beňová, D. Macleod, C. Lynch +1 more
2017Maternal and Child Nutrition70 citations Open access
Semantic Scholar
Protecting hard-won gains for mothers and newborns in low-income and middle-income countries in the face of COVID-19: call for a service safety net
W. Graham, B. Afolabi, L. Beňová, O. Campbell +8 more
2020BMJ Global Health69 citations Open access
Semantic Scholar
Family planning, antenatal and delivery care: cross‐sectional survey evidence on levels of coverage and inequalities by public and private sector in 57 low‐ and middle‐income countries
O. Campbell, L. Beňová, D. Macleod, R. Baggaley +12 more
2016Tropical medicine & international health64 citations Open access
Semantic Scholar
Women's knowledge and attitudes surrounding abortion in Zambia: a cross-sectional survey across three provinces
J. Cresswell, Rosalyn Schroeder, Mardieh L. Dennis, O. Owolabi +4 more
2016BMJ Open63 citations Open access
Semantic Scholar
Who, What, Where: an analysis of private sector family planning provision in 57 low‐ and middle‐income countries
O. Campbell, L. Beňová, D. Macleod, C. Goodman +3 more
2015Tropical medicine & international health60 citations Open access
Semantic Scholar
Where There Is No Toilet: Water and Sanitation Environments of Domestic and Facility Births in Tanzania
L. Beňová, O. Cumming, B. Gordon, Moke Magoma +1 more
2014PLoS ONE57 citations Open access
Semantic Scholar
Using multi-country household surveys to understand who provides reproductive and maternal health services in low- and middle-income countries: a critical appraisal of the Demographic and Health Surveys
K. Footman, L. Beňová, C. Goodman, D. Macleod +3 more
2015Tropical medicine & international health53 citations Open access
Semantic Scholar
Role of the private sector in childbirth care: cross‐sectional survey evidence from 57 low‐ and middle‐income countries using Demographic and Health Surveys
L. Beňová, David Macleod, K. Footman, F. Cavallaro +2 more
2015Tropical medicine & international health50 citations Open access
Semantic Scholar
Food Price Spikes Are Associated with Increased Malnutrition among Children in Andhra Pradesh, India
Sukumar Vellakkal, Jasmine Fledderjohann, S. Basu, S. Agrawal +4 more
2015Journal of NutriLife47 citations Open access
Semantic Scholar
The role of the private sector in the provision of antenatal care: a study of Demographic and Health Surveys from 46 low‐ and middle‐income countries
T. Powell-Jackson, D. Macleod, L. Beňová, C. Lynch +1 more
2015Tropical medicine & international health44 citations Open access
Semantic Scholar
Transport of pregnant women and obstetric emergencies in India: an analysis of the ‘108’ ambulance service system data
Samiksha Singh, P. Doyle, O. Campbell, G. Rao +1 more
2016BMC Pregnancy and Childbirth40 citations Open access
Semantic Scholar
Social science methods for research on sexual and reproductive health.
M. Collumbien, J. Busza, J. Cleland, O. Campbell
201240 citations
Semantic Scholar
Initiation and continuity of maternal healthcare: examining the role of vouchers and user-fee removal on maternal health service use in Kenya
Mardieh L. Dennis, L. Beňová, T. Abuya, Matteo Quartagno +2 more
2019Health Policy and Planning39 citations Open access
Semantic Scholar
Too poor or too far? Partitioning the variability of hospital-based childbirth by poverty and travel time in Kenya, Malawi, Nigeria and Tanzania
Kerry L. M. Wong, O. Brady, O. Campbell, A. Banke-Thomas +1 more
2020International Journal for Equity in Health37 citations Open access
Semantic Scholar
Emergency obstetric care availability: a critical assessment of the current indicator
S. Gabrysch, P. Zanger, O. Campbell
2012Tropical medicine & international health36 citations
Semantic Scholar
Management and referral for high-risk conditions and complications during the antenatal period: knowledge, practice and attitude survey of providers in rural public healthcare in two states of India
Samiksha Singh, P. Doyle, O. Campbell, G. V. Murthy
2019Reproductive Health33 citations Open access
Semantic Scholar
Caesarean section provision and readiness in Tanzania: analysis of cross-sectional surveys of women and health facilities over time
F. Cavallaro, A. Pembe, O. Campbell, C. Hanson +4 more
2018BMJ Open30 citations Open access
Semantic Scholar
The Potential of Medical Abortion to Reduce Maternal Mortality in Africa: What Benefits for Tanzania and Ethiopia?
R. Baggaley, J. Burgin, O. Campbell
2010PLoS ONE29 citations Open access
Semantic Scholar
Socio-Economic Gradients in Maternal and Child Health-Seeking Behaviours in Egypt: Systematic Literature Review and Evidence Synthesis
L. Beňová, O. Campbell, George Ploubidis
2014PLoS ONE26 citations Open access
Semantic Scholar
Using the Robson classification to assess caesarean section rates in Brazil: an observational study of more than 24 million births from 2011 to 2017
E. Paixão, C. Bottomley, L. Smeeth, M. D. da Costa +5 more
2021BMC Pregnancy and Childbirth25 citations Open access
Semantic Scholar
What are the threats from antimicrobial resistance for maternity units in low- and middle- income countries?
W. Graham, Emma Morrison, S. Dancer, K. Afsana +12 more
2016Global Health Action25 citations Open access
Semantic Scholar
Evaluating the impact of a maternal health voucher programme on service use before and after the introduction of free maternity services in Kenya: a quasi-experimental study
Mardieh L. Dennis, T. Abuya, O. Campbell, L. Beňová +3 more
2018BMJ Global Health23 citations Open access
Semantic Scholar
‘Who assisted with the delivery of (NAME)?’ Issues in estimating skilled birth attendant coverage through population-based surveys and implications for improving global tracking
Emma Radovich, L. Beňová, L. Penn-Kekana, Kerry L. M. Wong +1 more
2019BMJ Global Health21 citations Open access
Semantic Scholar
Should I stay or should I go?: consistency and switching of delivery locations among new mothers in 39 Sub-Saharan African and South/Southeast Asian countries
L. Beňová, D. Macleod, Emma Radovich, C. Lynch +1 more
2017Health Policy and Planning20 citations Open access
Semantic Scholar
Hands washing, glove use, and avoiding recontamination before aseptic procedures at birth: A multicenter time-and-motion study conducted in Zanzibar
G. Gon, M. de Bruin, M. de Barra, S. Ali +8 more
2019American Journal of Infection Control19 citations Open access
Semantic Scholar
Maternal obesity and Caesarean delivery in sub‐Saharan Africa
J. Cresswell, O. Campbell, M. D. De Silva, E. Slaymaker +1 more
2016Tropical medicine & international health19 citations Open access
Semantic Scholar

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