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Featured researches published by Yeri Kombe.


Diabetes Care | 2012

Prevalence of Metabolic Syndrome Among an Urban Population in Kenya

Lydia Kaduka; Yeri Kombe; Eucharia Unoma Kenya; Elizabeth Nafula Kuria; John K. Bore; Zipporah N. Bukania; Moses Mwangi

OBJECTIVE Developing countries are undergoing an epidemiologic transition accompanied by increasing burden of cardiovascular disease (CVD) linked to urbanization and lifestyle modifications. Metabolic syndrome is a cluster of CVD risk factors whose extent in Kenya remains unknown. The aim of this study was to determine the prevalence of metabolic syndrome and factors associated with its occurrence among an urban population in Kenya. RESEARCH DESIGN AND METHODS This was a household cross-sectional survey comprising 539 adults (aged ≥18 years) living in Nairobi, drawn from 30 clusters across five socioeconomic classes. Measurements included waist circumference, HDL cholesterol, triacylglycerides (TAGs), fasting glucose, and blood pressure. RESULTS The prevalence of metabolic syndrome was 34.6% and was higher in women than in men (40.2 vs. 29%; P < 0.001). The most frequently observed features were raised blood pressure, a higher waist circumference, and low HDL cholesterol (men: 96.2, 80.8, and 80%; women: 89.8, 97.2, and 96.3%, respectively), whereas raised fasting glucose and TAGs were observed less frequently (men: 26.9 and 63.3%; women: 26.9 and 30.6%, respectively). The main factors associated with the presence of metabolic syndrome were increasing age, socioeconomic status, and education. CONCLUSIONS Metabolic syndrome is prevalent in this urban population, especially among women, but the incidence of individual factors suggests that poor glycemic control is not the major contributor. Longitudinal studies are required to establish true causes of metabolic syndrome in Kenya. The Kenyan government needs to create awareness, develop prevention strategies, and strengthen the health care system to accommodate screening and management of CVDs.


BMC Health Services Research | 2013

Existence and functionality of emergency obstetric care services at district level in Kenya: theoretical coverage versus reality

Elizabeth Echoka; Yeri Kombe; Dominique Dubourg; Anselimo Makokha; Bjørg Evjen-Olsen; Moses Mwangi; Jens Byskov; Øystein Evjen Olsen; Richard Mutisya

BackgroundThe knowledge on emergency obstetric care (EmOC) is limited in Kenya, where only partial data from sub-national studies exist. The EmOC process indicators have also not been integrated into routine health management information system to monitor progress in safe motherhood interventions both at national and lower levels of the health system. In a country with a high maternal mortality burden, the implication is that decision makers are unaware of the extent of need for life-saving care and, therefore, where to intervene. The objective of the study was to assess the actual existence and functionality of EmOC services at district level.MethodsThis was a facility-based cross-sectional study. Data were collected from 40 health facilities offering delivery services in Malindi District, Kenya. Data presented are part of the “Response to accountable priority setting for trust in health systems” (REACT) study, in which EmOC was one of the service areas selected to assess fairness and legitimacy of priority setting in health care. The main outcome measures in this study were the number of facilities providing EmOC, their geographical distribution, and caesarean section rates in relation to World Health Organization (WHO) recommendations.ResultsAmong the 40 facilities assessed, 29 were government owned, seven were private and four were voluntary organisations. The ratio of EmOC facilities to population size was met (6.2/500,000), compared to the recommended 5/500,000. However, using the strict WHO definition, none of the facilities met the EmOC requirements, since assisted delivery, by vacuum or forceps was not provided in any facility. Rural–urban inequities in geographical distribution of facilities were observed. The facilities were not providing sufficient life-saving care as measured by caesarean section rates, which were below recommended levels (3.7% in 2008 and 4.5% in 2009). The rates were lower in the rural than in urban areas (2.1% vs. 6.8%; p < 0.001 ) in 2008 and (2.7% vs. 7.7%; p < 0.001) in 2009.ConclusionsThe gaps in existence and functionality of EmOC services revealed in this study may point to the health system conditions contributing to lack of improvements in maternal survival in Kenya. As such, the findings bear considerable implications for policy and local priority setting.


Tropical Medicine & International Health | 1999

Parameters associated with Schistosoma haematobium infection before and after chemotherapy in school children from two villages in the Coast province of Kenya

Anthony I. Kahama; Birgitte J. Vennervald; Yeri Kombe; Ruth W. Kihara; Malick Ndzovu; Peter Mungai; John H. Ouma

Summary We evaluated the impact of praziquantel therapy (40 mg/kg body weight) on indicators of infection with Schistosoma haematobium by following a cohort of infected children from schools located 12 km apart in the Coast province of Kenya, at 0, 2, 4, 6, 12 and 18 months after treatment. Within this period, measurements of infection parameters pertaining to egg counts and haematuria (micro‐, macro‐ and history) were evaluated at all time points. The initial prevalence of 100% dropped significantly 8 weeks after treatment with a similar trend in the intensity of infection. Microhaematuria followed the same trend as observed for egg counts while macrohaematuria remained low after treatment. Reinfection following successful therapy differed significantly between schools; in one school the children were reinfected immediately while those in the other remained uninfected despite similar starting prevalences, intensities of infection and cure rates. Transmission between the two areas looked homogeneous before treatment but when both groups were treated, contrasting transmission patterns became evident. In a regression model we evaluated factors that might be associated with reinfection, and after allowing for pretreatment infection level, age and sex, area (school) remained a highly significant predictor.


American Journal of Human Biology | 2011

Vitamin A dynamics in breastmilk and liver stores: A life history perspective

Masako Fujita; Bettina Shell-Duncan; Philip Ndemwa; Eleanor Brindle; Yun Jia Lo; Yeri Kombe; Kathleen A. O'Connor

Newborns are dependent on breastmilk vitamin A for building hepatic stores of vitamin A that will become critical for survival after weaning. It has been documented that vitamin A concentrations in breastmilk decline across the first year postpartum in both well‐nourished and malnourished populations. The reason for this decline has been assumed to be a sign of concurrently depleting maternal hepatic stores. This study investigates this assumption to clarify why the decline occurs, drawing on life history theory.


The Pan African medical journal | 2014

Barriers to emergency obstetric care services: accounts of survivors of life threatening obstetric complications in Malindi District, Kenya.

Elizabeth Echoka; Anselimo Makokha; Dominique Dubourg; Yeri Kombe; Lillian Nyandieka; Jens Byskov

Introduction Pregnancy-related mortality and morbidity in most low and middle income countries can be reduced through early recognition of complications, prompt access to care and appropriate medical interventions following obstetric emergencies. We used the three delays framework to explore barriers to emergency obstetric care (EmOC) services by women who experienced life threatening obstetric complications in Malindi District, Kenya. Methods A facility-based qualitative study was conducted between November and December 2010. In-depth interviews were conducted with 30 women who experienced obstetric “near miss” at the only public hospital with capacity to provide comprehensive EmOC services in the district. Resuls Findings indicate that pregnant women experienced delays in making decision to seek care and in reaching an appropriate care facility. The “first” delay was due to lack of birth preparedness, including failure to identify a health facility for delivery services regardless of antenatal care and to seek care promptly despite recognition of danger signs. The “second” delay was influenced by long distance and inconvenient transport to hospital. These two delays resulted in some women arriving at the hospital too late to save the life of the unborn baby. Conclusion Delays in making the decision to seek care when obstetric complications occur, combined with delays in reaching the hospital, contribute to ineffective treatment upon arrival at the hospital. Interventions to reduce maternal mortality and morbidity must adequately consider the pre-hospital challenges faced by pregnant women in order to influence decision making towards addressing the three delays.


Journal of Nutrition and Metabolism | 2014

Food Insecurity and Not Dietary Diversity Is a Predictor of Nutrition Status in Children within Semiarid Agro-Ecological Zones in Eastern Kenya

Zipporah N. Bukania; Moses Mwangi; Robert M. Karanja; Richard Mutisya; Yeri Kombe; Lydia Kaduka; Timothy Johns

Machakos and Makueni counties in Kenya are associated with historical land degradation, climate change, and food insecurity. Both counties lie in lower midland (LM) lower humidity to semiarid (LM4), and semiarid (LM5) agroecological zones (AEZ). We assessed food security, dietary diversity, and nutritional status of children and women. Materials and Methods. A total of 277 woman-child pairs aged 15–46 years and 6–36 months respectively, were recruited from farmer households. Food security and dietary diversity were assessed using standard tools. Weight and height, or length in children, were used for computation of nutritional status. Findings. No significant difference (P > 0.05) was observed in food security and dietary diversity score (DDS) between LM4 and LM5. Stunting, wasting, and underweight levels among children in LM4 and LM5 were comparable as were BMI scores among women. However, significant associations (P = 0.023) were found between severe food insecurity and nutritional status of children but not of their caregivers. Stunting was significantly higher in older children (>2 years) and among children whose caregivers were older. Conclusion. Differences in AEZ may not affect dietary diversity and nutritional status of farmer households. Consequently use of DDS may lead to underestimation of food insecurity in semiarid settings.


The Pan African medical journal | 2015

An assessment of priority setting process and its implication on availability of emergency obstetric care services in Malindi District, Kenya

Lilian Nyamusi Nyandieka; Yeri Kombe; Zipporah Ng'ang'a; Jens Byskov; Mercy Karimi Njeru

Introduction In spite of the critical role of Emergency Obstetric Care in treating complications arising from pregnancy and childbirth, very few facilities are equipped in Kenya to offer this service. In Malindi, availability of EmOC services does not meet the UN recommended levels of at least one comprehensive and four basic EmOC facilities per 500,000 populations. This study was conducted to assess priority setting process and its implication on availability, access and use of EmOC services at the district level. Methods A qualitative study was conducted both at health facility and community levels. Triangulation of data sources and methods was employed, where document reviews, in-depth interviews and focus group discussions were conducted with health personnel, facility committee members, stakeholders who offer and/ or support maternal health services and programmes; and the community members as end users. Data was thematically analysed. Results Limitations in the extent to which priorities in regard to maternal health services can be set at the district level were observed. The priority setting process was greatly restricted by guidelines and limited resources from the national level. Relevant stakeholders including community members are not involved in the priority setting process, thereby denying them the opportunity to contribute in the process. Conclusion The findings illuminate that consideration of all local plans in national planning and budgeting as well as the involvement of all relevant stakeholders in the priority setting exercise is essential in order to achieve a consensus on the provision of emergency obstetric care services among other health service priorities.


International Journal for Equity in Health | 2014

Using the unmet obstetric needs indicator to map inequities in life-saving obstetric interventions at the local health care system in Kenya.

Elizabeth Echoka; Dominique Dubourg; Anselimo Makokha; Yeri Kombe; Øystein Evjen Olsen; Moses Mwangi; Bjørg Evjen-Olsen; Jens Byskov

BackgroundDeveloping countries with high maternal mortality need to invest in indicators that not only provide information about how many women are dying, but also where, and what can be done to prevent these deaths. The unmet Obstetric Needs (UONs) concept provides this information. This concept was applied at district level in Kenya to assess how many women had UONs and where the women with unmet needs were located.MethodsA facility based retrospective study was conducted in 2010 in Malindi District, Kenya. Data on pregnant women who underwent a major obstetric intervention (MOI) or died in facilities that provide comprehensive Emergency Obstetric Care (EmOC) services in 2008 and 2009 were collected. The difference between the number of women who experienced life threatening obstetric complications and those who received care was quantified. The main outcome measures in the study were the magnitude of UONs and their geographical distribution.Results566 women in 2008 and 724 in 2009 underwent MOI. Of these, 185 (32.7%) in 2008 and 204 (28.1%) in 2009 were for Absolute Maternal Indications (AMI). The most common MOI was caesarean section (90%), commonly indicated by Cephalopelvic Disproportion (CPD)–narrow pelvis (27.6% in 2008; 26.1% in 2009). Based on a reference rate of 1.4%, the overall MOI for AMI rate was 1.25% in 2008 and 1.3% in 2009. In absolute terms, 22 (11%) women in 2008 and 12 (6%) in 2009, who required a life saving intervention failed to get it. Deficits in terms of unmet needs were identified in rural areas only while urban areas had rates higher than the reference rate (0.8% vs. 2.2% in 2008; 0.8% vs. 2.1% in 2009).ConclusionsThe findings, if used as a proxy to maternal mortality, suggest that rural women face higher risks of dying during pregnancy and childbirth. This indicates the need to improve priority setting towards ensuring equity in access to life saving interventions for pregnant women in underserved areas.


Journal of Psychoactive Drugs | 2016

Substance Use among a Sample of Healthcare Workers in Kenya: A Cross-Sectional Study.

Aggrey G. Mokaya; Victoria N. Mutiso; Abednego Musau; Albert Tele; Yeri Kombe; Zipporah Ng’ang’a; Erica Frank; David M. Ndetei; Veronic Clair

ABSTRACT This study describes reported substance use among Kenyan healthcare workers (HCWs), as it has implications for HCWs’ health, productivity, and their ability and likelihood to intervene on substance use. The Alcohol Smoking and Substance Involvement Screening Test (ASSIST) was administered to a convenience sample of HCWs (n = 206) in 15 health facilities. Reported lifetime use was 35.8% for alcohol, 23.5% for tobacco, 9.3% for cannabis, 9.3% for sedatives, 8.8% for cocaine, 6.4% for amphetamine-like stimulants, 5.4% for hallucinogens, 3.4% for inhalants, and 3.9% for opioids. Tobacco and alcohol were also the two most commonly used substances in the previous three months. Male gender and other substance use were key predictors of both lifetime and previous three months’ use rates. HCWs’ substance use rates appear generally higher than those seen in the general population in Kenya, though lower than those reported among many HCWs globally. This pattern of use has implications for both HCWs and their clients.


Advances in Public Health | 2016

Male Involvement in Maternal Health Planning Key to Utilization of Skilled Birth Services in Malindi Subcounty, Kenya

Lilian Nyamusi Nyandieka; Mercy Karimi Njeru; Zipporah Ng’ang’a; Elizabeth Echoka; Yeri Kombe

Background. In Malindi, rural populations face challenges in accessing skilled birth services. Consequently, the majority of women deliver at home and only seek help when they have complications. This paper reports part findings from a study conducted to assess health priority setting process and its implication on availability, access, and use of emergency obstetric care services in Malindi. Methods. The study utilized qualitative methods to collect data from health personnel and maternal health stakeholders including community members. Source and method triangulation was used to strengthen the credibility of study findings. Data was categorized manually into themes around issues relating to utilization of skilled birth services discussed in this paper. Findings. Various barriers to utilization of skilled birth services were cited. However, most were linked to mwenye (the husband) who decides on the place of birth for the wife. Conclusion. Husbands are very influential in regard to decisions on skilled birth service utilization in this community. Their lack of involvement in maternal health planning may contribute as a barrier to utilization of skilled care by pregnant women. There is need to address the mwenye factor in an attempt to mitigate some of the barriers cited for nonutilization of skilled birth services.

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Anselimo Makokha

Jomo Kenyatta University of Agriculture and Technology

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Moses Mwangi

Kenya Medical Research Institute

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Peter Mwaniki

Jomo Kenyatta University of Agriculture and Technology

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Jens Byskov

University of Copenhagen

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Elizabeth Echoka

Kenya Medical Research Institute

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Simon Karanja

Jomo Kenyatta University of Agriculture and Technology

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Philip Ndemwa

Kenya Medical Research Institute

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Zipporah Ng’ang’a

South Eastern Kenya University

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