scholarly journals Respondent-Driven Sampling for Surveying Ethnic Minorities in Ecuador

2020 ◽  
Vol 12 (21) ◽  
pp. 9102
Author(s):  
Héctor Mullo ◽  
Ismael Sánchez-Borrego ◽  
Sara Pasadas-del-Amo
Keyword(s):  
Ethnic Minority ◽  
Confidence Intervals ◽  
Ethnic Minorities ◽  
Sampling Method ◽  
Diagnostic Tools ◽  
Respondent Driven Sampling ◽  
Hidden Populations ◽  
Economic Issues ◽  
Socioeconomic Issues ◽  
Hard To Reach Populations

In this work, we consider the problem of surveying a population of young Indigenous, Montubios and Afro-Ecuadorians to study their living conditions and socioeconomic issues. We conducted a Respondent-driven sampling (RDS) survey in the canton of Riobamba, Ecuador. RDS is a network-based sampling method intended to survey hidden or hard-to-reach populations. We have obtained RDS estimates and confidence intervals of these characteristics. We have illustrated and discussed some of the assumptions of the method using some available diagnostic tools. Our results suggest that RDS is an effective methodology for studying social and economic issues of this ethnic minority in Ecuador. This technique is relatively easy to implement and has the potential to be applied to survey other hidden populations in other settings.

scholarly journals Stickiness of respondent-driven sampling recruitment chains

2014 ◽  
Vol 2 (2) ◽  
pp. 298-301 ◽  
Author(s):  
JACOB C. FISHER ◽  
M. GIOVANNA MERLI
Keyword(s):  
Risk Behaviors ◽  
Sex Workers ◽  
Drug Users ◽  
Female Sex Workers ◽  
Sampling Method ◽  
Respondent Driven Sampling ◽  
Hidden Populations ◽  
Sampling Process ◽  
Population Subgroup ◽  
Hard To Reach Populations

Respondent-driven sampling (RDS) is an increasingly popular chain-referral sampling method. Although it has proved effective at generating samples of hard to reach populations—meaning populations for which sampling frames are not available because they are hidden or socially stigmatized like sex workers or injecting drug users—quickly and cost-effectively, the ease of collecting the sample comes with a cost: bias or inefficiency in the estimates of population parameters (Gile & Handcock, 2010; Goel & Salganik, 2010). One way that RDS can produce inefficient estimates is if one or more of the recruitment chains gets stuck among members of a cohesive subpopulation, preventing the RDS sampling process from exploring other areas of the network. If that happens, members of the population subgroup recruit one another repeatedly, leading to an increase in sample size without increasing the diversity of the sample. This type of stickiness is particularly likely when hidden populations are stratified, and the stratified groups are organized into venues that provide opportunities to recruit other members of the same stratum. Female sex workers (FSW) in China, who are stratified into tiers of sex work that are correlated with marital status, age, and risk behaviors, are a prime example (Merli et al., 2014; Yamanis et al., 2013). Chinese FSW recruit clients from venues such as karaoke bars, massage parlors, or street corners. At larger venues, sex workers who participate in an RDS study might recruit other members of the same venue into the study at a higher rate than expected, leading to inefficient estimates. In short, the chain could get stuck in a venue.

scholarly journals Estimation of Non-Linear Parameters with Data Collected Using Respondent-Driven Sampling

Mathematics ◽  
2020 ◽  
Vol 8 (8) ◽  
pp. 1315
Author(s):  
Ismael Sánchez-Borrego ◽  
María del Mar Rueda ◽  
Héctor Mullo
Keyword(s):  
Correlation Coefficient ◽  
Simulation Study ◽  
Sampling Method ◽  
Future Research ◽  
Respondent Driven Sampling ◽  
Sampling Frame ◽  
Hidden Populations ◽  
Sample Weight ◽  
Non Linear ◽  
Weight Method

Respondent-driven sampling (RDS) is a snowball-type sampling method used to survey hidden populations, that is, those that lack a sampling frame. In this work, we consider the problem of regression modeling and association for continuous RDS data. We propose a new sample weight method for estimating non-linear parameters such as the covariance and the correlation coefficient. We also estimate the variances of the proposed estimators. As an illustration, we performed a simulation study and an application to an ethnic example. The proposed estimators are consistent and asymptotically unbiased. We discuss the applicability of the method as well as future research.

PSYCHOLOGY, AWARENESS OF THE ETHNIC GROUPS IN NEW RURAL CONSTRUCTION IN ETHNIC MINORITY AND MOUNTAINOUS AREAS TODAY

2018 ◽  
Author(s):  
Nguyen Duy Dung
Keyword(s):  
Ethnic Minority ◽  
Ethnic Groups ◽  
Ethnic Minorities ◽  
Rural Areas ◽  
Cultural Development ◽  
Mountainous Areas ◽  
Political Will ◽  
Target Program ◽  
Rural Construction ◽  
New Rural Construction

New rural construction is one of the key tasks identified by the Party and State as the national target program until 2020. Many documents of the Party and the State have been issued expressing political will to implement the tasks of building new rural areas, over 6 years of implementation, the National Target Program for new rural construction has achieved certain achievements, the appearance of rural areas of ethnic minorities and mountainous areas has gradually changed dramatically, contributing significantly to promoting socio-economic and cultural development. Many provinces and cities throughout the whole country have built some new rural models that meet nineteen criterias and arrive on time.

BUILDING THE MODEL OF INFORMATION, EDUCATION AND COMMUNICATION EFFICIENCY IN CONSERVATION AND PROMOTION OF THE IDENTITY VALUE OF ETHNIC MINORITIES CULTURE IN ETHNIC MINORITY BOARDING GENERAL SCHOOLS, ETHNIC MINORITY SEMI-BOARDING GENERAL SCHOOLS AND LOCAL COMMUNITIES THROUGH LANGUAGE OF ETHNIC MINORITIES

2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Ngo Quang Son ◽  
Nguyen Thi Phuong
Keyword(s):  
Ethnic Minority ◽  
Ethnic Minorities ◽  
Traditional Culture ◽  
Cultural Preservation ◽  
Spiritual Values ◽  
Linguistic Identity ◽  
Modern Life ◽  
Urgent Task ◽  
Communication Efficiency ◽  
History Of

Traditional culture of ethnic minorities is the material and spiritual values that are accumulated and preservedin the whole history of ethnic minority development. In thatcommon cultural flow, every ethnic minorities group in ourcountry has its own characteristics in traditional culture.That identity is expressed firstly in language. Language is animportant element of the ethnic minorities character, therefore,the loss of language is the loss of a great asset, thereby leadingto the erasure of art literature, religious beliefs and the custom,customary law.Therefore, in the context of modern life, preserving andpromoting the cultural and linguistic identity of ethnicminorities is an urgent task. In particular, pay specialattention to the method of cultural preservation through thedevelopment of Information, Education and CommunicationModel in ethnic minorities languages in schools and localcommunities.

CURRENT SITUATION OF MANAGEMENT OF LIFE SKILLS EDUCATIONAL ACTIVITIES TO RESPONSE TO CLIMATE CHANGE AND PREVENTION OF DISASTER FOR THE SUSTAINABLE DEVELOPMENT OF LOCAL COMMUNITIES IN THE ETHNIC MINORITIES BOARDING HIGH SCHOOLS OF THE NORTHWESTERN AREA AND ISSUES HAS BEEN POSED

2019 ◽  
Vol 8 (3) ◽  
Author(s):  
Vu Thi Thu Trang
Keyword(s):  
Climate Change ◽  
Sustainable Development ◽  
High Schools ◽  
Ethnic Minority ◽  
Ethnic Minorities ◽  
Life Skills ◽  
Local Communities ◽  
Disaster Prevention ◽  
The Sustainable Development ◽  
Northwestern Region

Through survey results on the status of management of life skills education activities to cope with climate change and disaster prevention for the sustainable development of local communities in the ethnic minority boarding high schools in the Northwestern region from 2013 to 2018, the author deeply analyzed and assessed the strengths, weaknesses, causes of strengths and weaknesses of the management of education activities on life skills to cope with climate change and disaster prevention for the sustainable development of local communities for ethnic minority students at boarding high schools for ethnic minorities in the Northwestern region in the present period and the issues raised.

INADEQUACIES IN HUMAN RESOURCES OF ETHNIC MINORITIES WITH SPARSE POPULATION AT PRESENT

2017 ◽  
Author(s):  
Le Thi Hao ◽  
Nguyen Thi Huong
Keyword(s):  
Human Resources ◽  
Ethnic Minority ◽  
Ethnic Minorities ◽  
Small Proportion ◽  
Great Role ◽  
International Integration ◽  
Specific Culture ◽  
Sparse Population

Despite of a small proportion, human resources of ethnic minority with sparse population plays a great role in the process of national construction and defense.It is an important factor in preservation and promotion of ethnic group’s specific culture and identity; contribution of the industrialization, modernization and international integration of the country. However, the human resources of ethnic minority with sparse population is inadequate and limited. Thus, solutions to reduce these shortcomings are required to focus on implementing.

DATABASE DESIGN FOR E-GOVERNANCE APPLICATION: A FRAMEWORK FOR THE MANAGEMENT INFORMATION SYSTEMS OF THE VIETNAM COMMITTEE FOR ETHNIC MINORITY AFFAIRS

2017 ◽  
Author(s):  
Nguyen Viet Hung ◽  
Phan Van Hung ◽  
Be Trung Anh
Keyword(s):  
Decision Making ◽  
Information System ◽  
Ethnic Minority ◽  
Ethnic Minorities ◽  
Good Governance ◽  
Local Governance ◽  
Geographical Information ◽  
Base System ◽  
Challenges And Opportunities ◽  
Competency Based

Data mode “good governance” developed in the last century for process of sustainable base system, providing basic information and on-line services, supports the development, challenges and opportunities in the context of globalization and integration. In this paper I discuss a framework for the design of e-Local Governance (eLG) that integrates Information System (IS), Geographical Information System (GIS) and Atlas with focus on ethnic minorities in Vietnam. The design framework is based on various classifications such categories as sex, age, ethnic group, education background and income. The database system is built to enhance the Committee for Ethnic Minority Affairs (CEMA) capabilities in the planning and decision making process by providing the authorities with data, internet GIS, internet communication and some ecological economic models to disseminate results to the ethnic minorities. The unique feature of the CEMADATA using GIS is that it helps users not only to improve the public services and to provide information and encourage ethnic minorities to participate in decision making processes, but also to support the competency-based training for IT staff

Gene-environment Interaction on the Risk of Type 2 Diabetes Among Ethnic Minority Populations Living in Europe and North America: A Systematic Review

2020 ◽  
Vol 16 (5) ◽  
pp. 457-470 ◽  
Author(s):  
Mohammad H. Zafarmand ◽  
Parvin Tajik ◽  
René Spijker ◽  
Charles Agyemang
Keyword(s):  
Type 2 Diabetes ◽  
North America ◽  
Ethnic Minority ◽  
Ethnic Minorities ◽  
Minority Groups ◽  
Environment Interaction ◽  
Ethnic Minority Groups ◽  
Gene Environment Interaction ◽  
Gene Environment

Background: The body of evidence on gene-environment interaction (GEI) related to type 2 diabetes (T2D) has grown in the recent years. However, most studies on GEI have sought to explain variation within individuals of European ancestry and results among ethnic minority groups are inconclusive. Objective: To investigate any interaction between a gene and an environmental factor in relation to T2D among ethnic minority groups living in Europe and North America. Methods: We systematically searched Medline and EMBASE databases for the published literature in English up to 25th March 2019. The screening, data extraction and quality assessment were performed by reviewers independently. Results: 1068 studies identified through our search, of which nine cohorts of six studies evaluating several different GEIs were included. The mean follow-up time in the included studies ranged from 5 to 25.7 years. Most studies were relatively small scale and few provided replication data. All studies included in the review included ethnic minorities from North America (Native-Americans, African- Americans, and Aboriginal Canadian), none of the studies in Europe assessed GEI in relation to T2D incident in ethnic minorities. The only significant GEI among ethnic minorities was HNF1A rs137853240 and smoking on T2D incident among Native-Canadians (Pinteraction = 0.006). Conclusion: There is a need for more studies on GEI among ethnicities, broadening the spectrum of ethnic minority groups being investigated, performing more discovery using genome-wide approaches, larger sample sizes for these studies by collaborating efforts such as the InterConnect approach, and developing a more standardized method of reporting GEI studies are discussed.

The Combination of Gender and Ethnic Quotas in Electoral Politics

2018 ◽  
Author(s):  
Melanie M. Hughes
Keyword(s):  
Ethnic Minority ◽  
Ethnic Minorities ◽  
Minority Women ◽  
The Political ◽  
Gender Quotas ◽  
Ethnic Minority Women ◽  
Multicultural Feminism ◽  
Ethnic Quotas ◽  
And Gender ◽  
National Legislatures

Around the world, countries are increasingly using quotas to enhance the diversity of political representatives. This chapter considers the histories and policy designs of ethnic and gender quotas that regulate national legislatures. Most countries with quotas target only one type of under-represented group—for example, women or ethnic minorities. Even in countries with both gender and ethnic quotas (called ‘tandem quotas’), the policies typically evolved separately and work differently. Women and ethnic minorities are treated as distinct groups, ignoring the political position of ethnic minority women. However, a handful of countries have ‘nested quotas’ that specifically regulate the political inclusion of ethnic minority women. The second half the chapter focuses explicitly on nested quotas. It lays out how nested quotas work, where and how they have been adopted, and the prospect for their spread to new countries in the future. The chapter concludes with reflections on the promises and pitfalls of nested quotas as a vehicle for multicultural feminism.

scholarly journals Biochemical abnormalities in COVID-19: a comparison of white versus ethnic minority populations in the UK

2021 ◽  
pp. jclinpath-2021-207446
Author(s):  
David R Taylor ◽  
Devon Buchanan ◽  
Wiaam Al-Hasani ◽  
Jessica Kearney ◽  
Tina Mazaheri ◽  
...  
Keyword(s):  
Intensive Care ◽  
Ethnic Minority ◽  
Ethnic Minorities ◽  
Troponin T ◽  
Minority Group ◽  
Patient Data ◽  
Minority Population ◽  
Gamma Glutamyl Transferase ◽  
Ethnic Minority Population ◽  
Glutamyl Transferase

AimsPublic Health England has identified that in COVID-19, death rates among ethnic minorities far exceeds that of the white population. While the increase in ethnic minorities is likely to be multifactorial, to date, no studies have looked to see whether values for routine clinical biochemistry parameters differ between ethnic minority and white individuals.MethodsBaseline biochemical data for 22 common tests from 311 SARS-CoV-2 positive patients presenting to hospital in April 2020 in whom ethnicity data were available was retrospectively collected and evaluated. Data comparisons between ethnic minority and white groups were made for all patient data and for the subset of patients subsequently admitted to intensive care.ResultsWhen all patient data were considered, the ethnic minority population had statistically significant higher concentrations of C reactive protein (CRP), aspartate aminotransferase and gamma-glutamyl transferase, while troponin T was higher in the white group. A greater proportion of ethnic minority patients were subsequently admitted to intensive care, but when the presenting biochemistry of this subset of patients was compared, no significant differences were observed between ethnic minority and white groups.ConclusionOur data show for the first time that routine biochemistry at hospital presentation in COVID-19 differs between ethnic minority and white groups. Among the markers identified, CRP was significantly higher in the ethnic minority group pointing towards an increased tendency for severe inflammation in this group.

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