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Dive into the research topics where Karen Weidert is active.

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Featured researches published by Karen Weidert.


International Journal of Gynecology & Obstetrics | 2011

Task shifting and sharing in Tigray, Ethiopia, to achieve comprehensive emergency obstetric care

Amanuel Gessessew; Gebre Ab Barnabas; Ndola Prata; Karen Weidert

To assess the contribution of nonphysician clinicians (NPCs) to comprehensive emergency obstetric care (CEmOC) in Tigray, Ethiopia.


International Journal of Women's Health | 2013

Prevention of postpartum hemorrhage in low-resource settings: current perspectives

Ndola Prata; Suzanne Bell; Karen Weidert

Background Postpartum hemorrhage (PPH) is the leading cause of maternal death in low-income countries and is the primary cause of approximately one-quarter of global maternal deaths. The purpose of this paper is to provide a review of PPH prevention interventions, with a particular focus on misoprostol, and the challenges and opportunities that preventing PPH in low-resource settings presents. Methods Using PubMed, we conducted a review of the literature on the randomized controlled trials of interventions to prevent PPH. We then searched PubMed and Google Scholar for nonrandomized field trials of interventions to prevent PPH. We limited our review to interventions that are discussed in the current World Health Organization (WHO) recommendations for PPH prevention and present evidence regarding the use of these interventions. We focused our review on nondrug PPH prevention interventions compared with no intervention and uterotonics versus placebo; this review does not decipher the relative effectiveness of uterotonic drugs. We describe challenges to and opportunities for scaling up PPH prevention interventions. Results Active management of the third stage of labor is considered the “gold standard” strategy for reducing the incidence of PPH. It combines nondrug interventions (controlled cord traction and cord clamping) with the administration of an uterotonic drug, the preferred uterotonic being oxytocin. Unfortunately, oxytocin has limited application in resource-poor countries, due to its heat instability and required administration by a skilled provider. New heat-stable drugs and drug formulations are currently in development that may improve the prevention of PPH; however, misoprostol is a viable option for provision at home by a lay health care worker or the woman herself, in the interim. Conclusion As the main cause of maternal mortality worldwide, PPH prevention interventions need to be prioritized. Increased access to prophylactic uterotonics, regardless of where deliveries occur, should be the primary means of reducing the burden of this complication.


Contraception | 2013

Meeting the need: youth and family planning in sub-Saharan Africa

Ndola Prata; Karen Weidert; Amita Sreenivas

BACKGROUND The need for a concerted effort to address the gaps in family planning services for youth in sub-Saharan Africa has been underreported and underexplored. STUDY DESIGN Trends in fertility, childbearing, unmet need for family planning options and contraceptive prevalence (CP) among youth are described with data from six African countries with four consecutive Demographic and Health Surveys. Estimates of exposure to risk of pregnancy and number of new contraceptives users needed to maintain and double CP in 2015 are calculated using current CP and projected youth population size in six African countries. RESULTS The youth population is expected to range from approximately 3 to 35 million in six African countries by 2015. Accounting for population growth and current estimates of sexual activity among youth, family planning services will need to absorb more than 800,000 and 11.3 million new contraceptive users total to maintain and double CP, respectively, in 2015 in those six African countries alone. CONCLUSION Our findings support existing literature that calls for a reorientation of family planning policies and programs, especially improved access to modern contraceptive methods among African youth.


PLOS ONE | 2013

Meeting rural demand: a case for combining community-based distribution and social marketing of injectable contraceptives in Tigray Ethiopia.

Ndola Prata; Karen Weidert; Ashley Fraser; Amanuel Gessessew

Background In Sub-Saharan Africa, policy changes have begun to pave the way for community distribution of injectable contraceptives but sustaining such efforts remains challenging. Combining social marketing with community-based distribution provides an opportunity to recover some program costs and compensate workers with proceeds from contraceptive sales. This paper proposes a model for increasing access to injectable contraceptives in rural settings by using community-based distributers as social marketing agents and incorporating financing systems to improve sustainability. Methods This intervention was implemented in three districts of the Central Zone of Tigray, Ethiopia and program data has been collected from November 2011 through October 2012. A total of 137 Community Based Reproductive Health Agents (CBRHAs) were trained to provide injectable contraceptives and were provided with a loan of 25 injectable contraceptives from a drug revolving fund, created with project funds. The price of a single dose credited to a CBRHA was 3 birr (


PLOS ONE | 2013

Potential for Cost Recovery: Women’s Willingness to Pay for Injectable Contraceptives in Tigray, Ethiopia

Ndola Prata; Suzanne Bell; Karen Weidert; Amanuel Gessessew

0.17) and they provide injections to women for 5 birr (


International Journal of Women's Health | 2016

Efficacy of misoprostol for the treatment of postpartum hemorrhage: current knowledge and implications for health care planning.

Ndola Prata; Karen Weidert

0.29), determined with willingness-to-pay data. Social marketing was used to create awareness and generate demand. Both quantitative and qualitative methods were used to examine important feasibility aspects of the intervention. Results Forty-four percent of CBRHAs were providing family planning methods at the time of the training and 96% believed providing injectable contraceptives would improve their services. By October 2012, 137 CBRHAs had successfully completed training and provided 2541 injections. Of total injections, 47% were provided to new users of injectable contraceptives. Approximately 31% of injections were given for free to the poorest women, including adolescents. Conclusions Insights gained from the first year of implementation of the model provide a framework for further expansion in Tigray, Ethiopia. Our experience highlights how program planners can tailor interventions to match family planning preferences and create more sustainable contraceptive service provision with greater impact.


Global health, science and practice | 2017

Community Health Workers as Social Marketers of Injectable Contraceptives: A Case Study from Ethiopia

Karen Weidert; Amanuel Gessessew; Suzanne Bell; Hagos Godefay; Ndola Prata

Objective To investigate factors associated with a woman’s willingness to pay (WTP) for injectable contraceptives in Tigray, Ethiopia. Methods We used a multistage random sampling design to generate a representative sample of reproductive age women from the Central Zone of Tigray, Ethiopia to participate in a survey (N = 1490). Respondents who had ever used injectable contraceptives or who were interested in using them were asked whether they would be willing to pay, and if so, how much. Logistic regression odds ratios (ORs) with 95% confidence intervals (CIs) and p-values were used to assess which factors were associated with WTP in our final model. Findings On average, respondents were willing to pay 11 birr (


Open Access Journal | 2016

Varying family planning strategies across age categories: differences in factors associated with current modern contraceptive use among youth and adult women in Luanda, Angola

Ndola Prata; Suzanne Bell; Karen Weidert; Benjamin Nieto-Andrade; Adelaide Carvahlo; Isilda Neves

0.65 USD) per injection. Being married, completing any amount of education, having given birth, and having visited a health facility in the last 12 months (whether received family planning information or not) were associated with statistically significantly increased odds of WTP. Having initiated sexual activity and having 1–2 children (compared to 0 children) were associated with statistically significantly decreased odds of WTP. We also detected two significant interactions. Among women who prefer injectable contraceptives, their odds of WTP for injectable contraceptives vary across length of time they have used them. And among women who work for pay, their odds of WTP for injectable contraceptives vary by whether they agree with their husband/partner about the ideal number of children. Conclusion In a sector that continually struggles with funding, cost recovery for contraceptive services may offer a means of improved financial sustainability while increasing rural access to injectable contraceptives. Results indicate there are opportunities for cost recovery in rural Tigray, Ethiopia and highlight factors that could be leveraged to increase WTP for injectable contraceptives.


Global health, science and practice | 2016

Safety and Acceptability of Community-Based Distribution of Injectable Contraceptives: A Pilot Project in Mozambique

Ana Jacinto; Mahomed Riaz Mobaracaly; Momade Bay Ustáb; Cassimo Bique; Cassandra Blazer; Karen Weidert; Ndola Prata

Background A myriad of interventions exist to treat postpartum hemorrhage (PPH), ranging from uterotonics and hemostatics to surgical and aortic compression devices. Nonetheless, PPH remains the leading cause of maternal mortality worldwide. The purpose of this article is to review the available evidence on the efficacy of misoprostol for the treatment of primary PPH and discuss implications for health care planning. Data and methods Using PubMed, Web of Science, and GoogleScholar, we reviewed the literature on randomized controlled trials of interventions to treat PPH with misoprostol and non-randomized field trials with controls. We discuss the current knowledge and implications for health care planning, especially in resource-poor settings. Results The treatment of PPH with 800 μg of misoprostol is equivalent to 40 IU of intravenous oxytocin in women who have received oxytocin for the prevention of PPH. The same dose might be an option for the treatment of PPH in women who did not receive oxytocin for the prevention of PPH and do not have access to oxytocin for treatment. Adding misoprostol to standard uterotonics has no additional benefits to women being treated for PPH, but the beneficial adjunctive role of misoprostol to conventional uterotonics is important in reducing intra- and postoperative hemorrhage during cesarean section. Conclusion Misoprostol is an effective uterotonic agent in the treatment of PPH. Clinical guidelines and treatment protocols should be updated to reflect the current knowledge on the efficacy of misoprostol for the treatment of PPH with 800 μg sublingually.


Journal of the Royal Society of Medicine | 2012

Criticism of misguided Chu et al. article

Malcolm Potts; Caitlin Gerdts; Ndola Prata; Friday Okonofua; Nuriye Nalan Sahin Hodoglugil; Nap Hosang; Karen Weidert; Ashley Fraser; Suzanne Bell

Volunteer community health workers (CHWs) administered injectable contraceptives to women in the community for a small fee while providing counseling and referrals for other methods. Over nearly 3 years, more than 600 CHWs provided an estimated 15,410 injections. The model has the potential to improve sustainability of community-based distribution programs by incorporating social marketing principles to partially recover commodity costs and compensate CHWs. Volunteer community health workers (CHWs) administered injectable contraceptives to women in the community for a small fee while providing counseling and referrals for other methods. Over nearly 3 years, more than 600 CHWs provided an estimated 15,410 injections. The model has the potential to improve sustainability of community-based distribution programs by incorporating social marketing principles to partially recover commodity costs and compensate CHWs. ABSTRACT Ethiopia has made notable progress in increasing awareness and knowledge of family planning and is considered a success story among funders and program planners. Yet unmet need among rural women (28.6%) is almost double that of urban women (15.5%), with a wide gap in total fertility rate depending on urban (2.6) or rural (5.5) residence. This study investigates the impact of a service delivery model that combines community-based distribution (CBD) of contraception with social marketing in Tigray, Ethiopia, to create a more sustainable approach to CBD. Between September 2011 and October 2013, 626 volunteer CHWs were recruited and trained to administer depot medroxyprogesterone acetate (DMPA) injections and provide counseling and referrals to the health post for other methods; the project implementation period ended in June 2014. The CHWs received a supply of DMPA injections in the form of a microloan from a drug revolving fund; the CHWs charged women a minimal fee (5 birr, or US

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Ndola Prata

University of California

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Suzanne Bell

University of California

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Benjamin Nieto-Andrade

Population Services International

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Ashley Fraser

University of California

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Caitlin Gerdts

University of California

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