Last data update: Aug 15, 2025. (Total: 49733 publications since 2009)
| Records 1-9 (of 9 Records) |
| Query Trace: Nichols EK[original query] |
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| A systematic review of vital events tracking by community health agents
Nichols EK , Ragunanthan NW , Ragunanthan B , Gebrehiwet H , Kamara K . Glob Health Action 2019 12 (1) 1597452 Background: Efforts to improve national civil registration and vital statistics (CRVS) systems are focusing on transforming traditionally passive systems into active systems that have the ability to reach the household level. While community health agents remain at the core of many birth and death reporting efforts, previous literature has not explored elements for their successful integration into CRVS efforts. Objective: To inform future efforts to improve CRVS systems, we conducted a systematic review of literature to understand and describe the design features, resulting data quality, and factors impacting the performance of community health agents involved in tracking vital events. Methods: We reviewed 393 articles; reviewers extracted key information from 58 articles meeting the eligibility criteria: collection of birth and/or death information outside of a clinic environment by a community agent. Reviewers recorded information in an Excel database on various program aspects, and results were summarized into key themes and topic areas. Results: The majority of articles described work in rural areas of Africa or South-East Asia. Nearly all articles (86%) cited some form of household visitation by community health agents. Only one article described a process in which vital events tracking activities were linked to official vital events registers. Other factors commonly described included program costs, relationship of community agents to community, and use of mobile devices. About 1/3 of articles reported quantitative information on performance and quality of vital events data tracked; various methods were described for measuring completeness of reporting, which varied greatly across articles. Conclusions: The multitude of articles on this topic attests to the availability of community health agents to track vital events. Creating a programmatic norm of integrating with CRVS systems the vital events information collected from existing community health programs has the potential to provide governments with information essential for public health decision-making. |
| The WHO 2016 verbal autopsy instrument: An international standard suitable for automated analysis by InterVA, InSilicoVA, and Tariff 2.0
Nichols EK , Byass P , Chandramohan D , Clark SJ , Flaxman AD , Jakob R , Leitao J , Maire N , Rao C , Riley I , Setel PW . PLoS Med 2018 15 (1) e1002486 BACKGROUND: Verbal autopsy (VA) is a practical method for determining probable causes of death at the population level in places where systems for medical certification of cause of death are weak. VA methods suitable for use in routine settings, such as civil registration and vital statistics (CRVS) systems, have developed rapidly in the last decade. These developments have been part of a growing global momentum to strengthen CRVS systems in low-income countries. With this momentum have come pressure for continued research and development of VA methods and the need for a single standard VA instrument on which multiple automated diagnostic methods can be developed. METHODS AND FINDINGS: In 2016, partners harmonized a WHO VA standard instrument that fully incorporates the indicators necessary to run currently available automated diagnostic algorithms. The WHO 2016 VA instrument, together with validated approaches to analyzing VA data, offers countries solutions to improving information about patterns of cause-specific mortality. This VA instrument offers the opportunity to harmonize the automated diagnostic algorithms in the future. CONCLUSIONS: Despite all improvements in design and technology, VA is only recommended where medical certification of cause of death is not possible. The method can nevertheless provide sufficient information to guide public health priorities in communities in which physician certification of deaths is largely unavailable. The WHO 2016 VA instrument, together with validated approaches to analyzing VA data, offers countries solutions to improving information about patterns of cause-specific mortality. |
| Improving mortality data in Jordan: a 10 year review
Dababneh F , Nichols EK , Asad M , Haddad Y , Notzon F , Anderson R . Bull World Health Organ 2015 93 (10) 727-731 PROBLEM: Before 2003 there was substantial underreporting of deaths in Jordan. The death notification form did not comply with World Health Organization (WHO) guidelines and information on the cause of death was often missing, incomplete or inaccurate. APPROACH: A new mortality surveillance system to determine the causes of death was implemented in 2003 and a unit for coding causes of death was established at the ministry of health. LOCAL SETTING: Jordan is a middle-income country with a population of 6.4 million people. Approximately 20 000 deaths were registered per year between 2005 and 2011. RELEVANT CHANGES: In 2001, the ministry of health organized the first meeting on Jordan’s mortality system, which yielded a five-point plan to improve mortality statistics. Using the recommendations produced from this meeting, in 2003 the ministry of health initiated a mortality statistics improvement project in collaboration with international partners. Jordan has continued to improve its mortality reporting system, with annual reporting since 2004. Reports are based on more than 70% of reported deaths. The quality of cause-of-death information has improved, with only about 6% of deaths allocated to symptoms and ill-defined conditions – a substantial decrease from the percentage before 2001 (40%). Mortality information is now submitted to WHO following international standards. LESSONS LEARNT: After 10 years of mortality surveillance in Jordan, the reporting has improved and the information has been used by various health programmes throughout Jordan. |
| Rapid assessment of Malawi's civil registration and vital statistics system
Nichols EK , Giles D , Kang'oma S , Mwalwanda L , Onaka A , Notzon F . Public Health Action 2015 5 (3) 162-4 In 2010, Malawi adopted a National Registration Act, making the registration of births and deaths compulsory, and efforts to improve Malawi's civil registration and vital statistics (CRVS) system are underway. During a participatory-style workshop, stakeholders completed a rapid assessment of the national civil registration and vital statistics systems. While participants discussed and scored each item in a standard tool, the workshop focused on sharing of partners' roles and challenges. The workshop has enhanced receptiveness in collaboration, and an inter-ministerial technical working group has now been formed to develop a strategic plan and conduct a comprehensive assessment to guide future improvements. |
| Vitamin D status and associated factors of deficiency among Jordanian children of preschool age
Nichols EK , Khatib IM , Aburto NJ , Serdula MK , Scanlon KS , Wirth JP , Sullivan KM . Eur J Clin Nutr 2014 69 (1) 90-5 BACKGROUND/OBJECTIVES: Vitamin D deficiency in children remains a global concern. Although literature exists on the vitamin D status and its risk factors among children in the Middle East, findings have yielded mixed results, and large, representative community studies are lacking. SUBJECTS/METHODS: In a nationally representative survey of 1077 Jordanian children of preschool age (12-59 months) in Spring 2010, we measured 25(OH)D3 concentrations by liquid chromatography-tandem mass spectrometry and calculated prevalence ratios for deficiency associated with various factors. RESULTS: Results showed 19.8% (95% confidence interval (CI): 16.4-23.3%) deficiency (<12 ng/ml) and 56.5% (95% CI: 52.0-61.0%) insufficiency (<20 ng/ml). In adjusted models, prevalence of deficiency was higher for females compared with males (prevalence ratio (PR)=1.74, 95% CI: 1.22-2.47, P=0.002) and lower for children 24-35 months of age (PR=0.64, 95% CI: 0.44-0.92, P=0.018) compared with children 12-23 months of age. In rural areas, there was no difference in prevalence of vitamin D deficiency between those whose mothers had/did not have vitamin D deficiency (P=0.312); however, in urban areas, prevalence of vitamin D deficiency was 3.18 times greater among those whose mothers were vitamin D deficient compared with those whose mothers were not deficient (P=0.000). CONCLUSIONS: Vitamin D deficiency and insufficiency pose significant public health problems in Jordanian children with female children disproportionately affected. Strong associations between vitamin D status in children and urban residency and maternal vitamin D status suggest that the behaviors related to sun exposure in urban mothers likely also affect the sun exposure and thus vitamin D status of their children. |
| Micronutrient status in Jordan: 2002 and 2010
Serdula MK , Nichols EK , Aburto NJ , Masa'd H , Obaid B , Wirth J , Tarawneh M , Barham R , Hijawi B , Sullivan KM . Eur J Clin Nutr 2014 68 (10) 1124-8 BACKGROUND/OBJECTIVES: Two national surveys were conducted in Jordon in 2002 and 2010 to investigate the micronutrient status in women and children. To determine the prevalence of anemia, iron and folate deficiency among women and children in 2010 and compare with the prevalence of anemia and iron deficiency in 2002. SUBJECTS/METHODS: A nationally representative survey was conducted in 2002 (1023 women, 15-49 years of age; 1059 children, 12-59 months of age) and a second survey in 2010 (2035 women; 940 children). Venous blood samples were used to measure hemoglobin, ferritin and red blood cell folate (the latter on a subsample of 393 women). RESULTS: Among women in 2010, the prevalence of folate deficiency and insufficiency was 13.6% and 82.9%, respectively. Geometric mean serum ferritin was higher in 2010 compared with 2002 (21.3 ng/ml vs 18.3, P=0.01); there was no significant change in the prevalence of iron deficiency (35.1% vs 38.7%, P=0.17), iron deficiency anemia (19.1% vs 20.0%, P=0.61) or anemia (29.2% vs 29.3%, P=0.96). Among children, a significantly lower prevalence was observed in 2010 compared with 2002 for iron deficiency (13.7% vs 26.2% P<0.001) and iron deficiency anemia (4.8% vs 10.1%, P<0.001); a nonsignificant lower prevalence was observed for anemia (16.6% vs 20.2%, P=0.09). CONCLUSIONS: In 2010, approximately one of seven women was folate deficient and six out of seven were folate insufficient for the prevention of neural tube defects. Between 2002 and 2010, significant improvement was observed in the prevalence of iron deficiency in children, but not in women. |
| Suspected outbreak of riboflavin deficiency among populations reliant on food assistance: a case study of drought-stricken Karamoja, Uganda, 2009-2010
Nichols EK , Talley LE , Birungi N , McClelland A , Madraa E , Chandia AB , Nivet J , Flores-Ayala R , Serdula MK . PLoS One 2013 8 (5) e62976 BACKGROUND: In 2009, a humanitarian response was launched to address a food security and livelihoods crisis in Karamoja, Uganda. During a polio immunization campaign in mid-August 2009, health workers in Nakapiripit District reported a concern about an increase in mouth sores, or angular stomatitis (AS) and gum ulcerations, among children in one village, and an investigation was launched. OBJECTIVE: This article describes the investigation, lessons learned, and provides guidance for monitoring micronutrient deficiencies among populations receiving food assistance. DESIGN: An investigation into a suspected outbreak of riboflavin (vitamin B2) deficiency was initiated, including a rapid assessment, mass screening, a convenience sample collection of blood specimens (n = 58 symptomatic cases and n = 18 asymptomatic individuals), and analysis of the general food ration (70% ration). RESULTS: Findings showed signs of AS in only 399 (0.2%) of 179,172 screened individuals, including adults and children. Biochemical analysis confirmed riboflavin deficiency in 84.5% of specimens from symptomatic individuals and 94.4% of specimens from asymptomatic individuals. Ration distribution data showed that 55% of distributions provided less than half the riboflavin RDA. CONCLUSION: Evidence was insufficient to confirm an actual outbreak of riboflavin deficiency, though the present investigation adds further documentation that micronutrient deficiencies continue to persist among populations in emergency settings. This article describes challenges, lessons learned, and guidance for monitoring micronutrient deficiencies among food assistance recipients, including: ongoing nutrition monitoring and surveillance; training and sensitization about micronutrient deficiencies, sensitization of the population about locally-available food, and identifying ways to improve micronutrient interventions. |
| Effects of a large-scale micronutrient powder and young child feeding education program on the micronutrient status of children 6-24 months of age in the Kyrgyz Republic
Serdula MK , Lundeen E , Nichols EK , Imanalieva C , Minbaev M , Mamyrbaeva T , Timmer A , Aburto NJ . Eur J Clin Nutr 2013 67 (7) 703-7 BACKGROUND/OBJECTIVES: To combat iron and other micronutrient deficiencies, the Ministry of Health of the Kyrgyz Republic launched a regional Infant and Young Child Nutrition (IYCN) program in 2009, which included promotion of home fortification with micronutrient powder (MNP) containing iron (12.5 mg elemental iron), vitamin A (300 mcg) and other micronutrients. Every 2 months children aged 6-24 months were provided 30 sachets to be taken on a flexible schedule. The objective was to assess biochemical indicators of iron and vitamin A status among children aged 6-24 months at the baseline and follow-up surveys. SUBJECTS/METHODS: Cross-sectional representative cluster surveys were conducted in 2008 (n=571 children) and 2010 (n=541). Data collected included measurement of hemoglobin, serum ferritin, soluble transferrin receptor (sTfR), retinol-binding protein, C-reactive protein (CRP) and alpha1-glycoprotein acid (AGP). RESULTS: Among all children, declines were observed in the prevalence of: anemia, 50.6% versus 43.8% (P=0.05); total iron deficiency (either low ferritin or high sTfR), 77.3% versus 63.7% (P<0.01); and iron deficiency anemia, 45.5% versus 33.4% (P<0.01). Among children without inflammation as measured by CRP and AGP, similar declines were observed, but only declines in total iron deficiency and iron deficiency anemia reached statistical significance. Among all children and those without inflammation, the prevalence of vitamin A deficiency remained the same. CONCLUSIONS: One year after the introduction of home fortification with MNP, within a larger IYCN program, the prevalence of anemia, iron deficiency and iron deficiency anemia declined, but vitamin A deficiency remained unchanged. (European Journal of Clinical Nutrition advance online publication, 27 March 2013; doi:10.1038/ejcn.2013.67.) |
| Vitamin D status and determinants of deficiency among non-pregnant Jordanian women of reproductive age
Nichols EK , Khatib IM , Aburto NJ , Sullivan KM , Scanlon KS , Wirth JP , Serdula MK . Eur J Clin Nutr 2012 66 (6) 751-6 BACKGROUND/OBJECTIVES: Vitamin D deficiency, a risk factor for osteomalacia and osteoporosis, is a re-emerging health problem globally. While sunlight is an important vitamin D source, previous investigations among women whose culture encourages skin covering have been small, not nationally representative, or both. We investigated serum 25-hydroxyvitamin D (25(OH)D(3)) status and factors associated with deficiency in a nationally representative survey of 2013 Jordanian women of reproductive age in Spring 2010. SUBJECTS/METHODS: We measured 25(OH)D(3) concentrations by liquid chromatography-tandem mass spectrometry and calculated prevalence ratios for deficiency associated with skin covering and other factors. RESULTS: Results showed 60.3% (95% CI: 57.1-63.4%) deficiency (<12 ng/ml) and 95.7% (95% CI: 94.4-96.8%) insufficiency (<20 ng/ml) among women. Prevalence of deficiency was 1.60 times higher for women who covered with a scarf/hijab (95% CI: 1.06-2.40, P=0.024) and 1.87 times higher for women who wore full cover, or a niqab (95% CI: 1.20-2.93, P=0.006), compared with the women who did not wear a scarf/hijab or niqab. Compared with rural women completing at least secondary education, prevalence of deficiency was 1.30 times higher for urban women of the same education level (95% CI: 1.08-1.57, P=0.006), 1.18 times higher for urban women completing less than secondary education (95% CI: 0.98-1.43, P=0.09), and 0.66 times lower for rural women completing less than secondary education (95% CI: 0.52-0.84, P=0.001). CONCLUSION: Vitamin D deficiency and insufficiency pose significant public health problems in Jordanian women. Prevalence of deficiency is significantly higher among urban women and among women who cover with a scarf/hijab or niqab. (European Journal of Clinical Nutrition advance online publication, 14 March 2012; doi:10.1038/ejcn.2012.25.) |
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