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Respondent driven sampling

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https://www.readbyqxmd.com/read/28716395/-it-ruined-my-life-the-effects-of-the-war-on-drugs-on-people-who-inject-drugs-pwid-in-rural-puerto-rico
#1
R Abadie, C Gelpi-Acosta, C Davila, A Rivera, M Welch-Lazoritz, K Dombrowski
BACKGROUND: The War on Drugs has raised the incarceration rates of racial minorities for non-violent drug-related crimes, profoundly stigmatized drug users, and redirected resources from drug prevention and treatment to militarizing federal and local law enforcement. Yet, while some states consider shifting their punitive approach to drug use, to one based on drug treatment and rehabilitation, nothing suggests that these policy shifts are being replicated in Puerto Rico. METHODS: This paper utilizes data from 360 PWID residing in four rural towns in the mountainous area of central Puerto Rico...
July 14, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28708696/prevalence-of-human-immunodeficiency-virus-and-sexually-transmitted-infections-among-cisgender-and-transgender-women-sex-workers-in-greater-kuala-lumpur-malaysia-results-from-a-respondent-driven-sampling-study
#2
Jeffrey A Wickersham, Britton A Gibson, Alexander R Bazazi, Veena Pillai, Courtney J Pedersen, Jaimie P Meyer, Nabila El-Bassel, Kenneth H Mayer, Adeeba Kamarulzaman, Frederick L Altice
BACKGROUND: Sex workers face a disproportionate burden of human immunodeficiency virus (HIV) and sexually transmitted infections (STI) worldwide. For cisgender women sex workers (CWSW), global HIV prevalence is over 10%, whereas transgender women sex workers (TWSW) face an HIV burden of 19% to 27%. METHODS: We used respondent-driven sampling to recruit 492 sex workers, including CWSW (n = 299) and TWSW (n = 193) in Greater Kuala Lumpur, Malaysia. Participants completed an in-depth survey and were screened for HIV, syphilis, Chlamydia trachomatis, and Neisseria gonorrhoeae...
June 20, 2017: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28697760/hepatitis-c-bio-behavioural-surveys-in-people-who-inject-drugs-a-systematic-review-of-sensitivity-to-the-theoretical-assumptions-of-respondent-driven-sampling
#3
REVIEW
Ryan Buchanan, Salim I Khakoo, Jonathan Coad, Leonie Grellier, Julie Parkes
BACKGROUND: New, more effective and better-tolerated therapies for hepatitis C (HCV) have made the elimination of HCV a feasible objective. However, for this to be achieved, it is necessary to have a detailed understanding of HCV epidemiology in people who inject drugs (PWID). Respondent-driven sampling (RDS) can provide prevalence estimates in hidden populations such as PWID. The aims of this systematic review are to identify published studies that use RDS in PWID to measure the prevalence of HCV, and compare each study against the STROBE-RDS checklist to assess their sensitivity to the theoretical assumptions underlying RDS...
July 11, 2017: Harm Reduction Journal
https://www.readbyqxmd.com/read/28681341/sexual-risks-and-policing-among-male-migrant-and-non-migrant-market-vendors-in-central-asia
#4
Phillip Marotta, Nabila El-Bassel, Assel Terlikbayeva, Gaukhar Mergenova, Sholpan Primbetova, Elwin Wu, Louisa Gilbert
The following study examined associations between sexual risk behaviors and policing among external migrant, internal migrant, and non-migrant male market workers in Almaty, Kazakhstan. Negative binomial regression and logistic regressions examined associations between sexual risk behaviors and policing (questioning by market officials and migration police, and arrest) for 1342 external, internal, and non-migrant workers recruited using respondent-driven sampling (RDS). Incidence rate ratios (IRR) and adjusted odds ratios (OR) were stratified by migration status...
July 5, 2017: Journal of Urban Health: Bulletin of the New York Academy of Medicine
https://www.readbyqxmd.com/read/28678904/viral-hepatitis-in-female-sex-workers-using-the-respondent-driven-sampling
#5
Marcos André de Matos, Divânia Dias da Silva França, Megmar Aparecida Dos Santos Carneiro, Regina Maria Bringel Martins, Lígia Regina Franco Sansigolo Kerr, Karlla Antonieta Amorim Caetano, Raquel Silva Pinheiro, Lyriane Apolinário de Araújo, Rosa Maria Salani Mota, Marcia Alves Dias de Matos, Ana Rita Coimbra Motta-Castro, Sheila Araújo Teles
OBJECTIVE: To estimate the prevalence of hepatitis B virus and C virus infections and their genotypes and analyze the risk factors for the markers of exposure to hepatitis B virus in female sex workers in a region of intense sex trade. METHODS: This is a cross-sectional study performed with four hundred and two female sex workers in Goiânia, Brazil. Data have been collected using the Respondent-Driven Sampling. The women have been interviewed and tested for markers of hepatitis B and C viruses...
June 26, 2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28677614/a-microfluidic-ph-measurement-device-with-a-flowing-liquid-junction
#6
Akira Yamada, Miho Suzuki
The pH values of aqueous solutions are conventionally measured with pH-sensitive electrodes such as glass electrodes or ion-sensitive field-effect transistors (ISFETs) used in conjunction with Ag/AgCl reference electrodes and KCl solutions. The speed of pH measurement with these systems can be deficient, however, as the glass electrode responds slowly during measurements of sample solutions with low buffering capacities. Our group has constructed a new pH measurement system using a microfluidic device and ISFET sensors...
July 4, 2017: Sensors
https://www.readbyqxmd.com/read/28673303/an-analysis-of-respondent-driven-sampling-with-injecting-drug-users-in-a-high-hiv-prevalent-state-of-india
#7
Sanjib Kumar Phukan, Gajendra Kumar Medhi, Jagadish Mahanta, Rajatashuvra Adhikary, Gay Thongamba, Ramesh S Paranjape, Brogen S Akoijam
BACKGROUND: Personal networks are significant social spaces to spread of HIV or other blood-borne infections among hard-to-reach population, viz., injecting drug users, female sex workers, etc. Sharing of infected needles or syringes among drug users is one of the major routes of HIV transmission in Manipur, a high HIV prevalence state in India. This study was carried out to describe the network characteristics and recruitment patterns of injecting drug users and to assess the association of personal network with injecting risky behaviors in Manipur...
July 3, 2017: Harm Reduction Journal
https://www.readbyqxmd.com/read/28672037/high-acceptability-of-rapid-hiv-self-testing-among-a-diverse-sample-of-msm-from-buenos-aires-argentina
#8
Maria A Pando, Curtis Dolezal, Rubén O Marone, Victoria Barreda, Alex Carballo-Diéguez, Maria M Avila, Ivan C Balán
INTRODUCTION: The objective of this study was to explore the acceptability of rapid HIV self-testing (RHST) among men who have sex with men (MSM). METHODS: During 2006-2009, a sample of 500 MSM was recruited through Respondent Driven Sampling for an HIV prevalence/incidence study. Attitude toward RHST was explored among HIV negative MSM. Data were weighted prior to analyses. RESULTS: Participants reported they were likely to buy RHST (74%), test themselves more frequently than they currently do (77%), and that the procedure would simplify testing (70%)...
2017: PloS One
https://www.readbyqxmd.com/read/28662352/longitudinal-associations-between-outpatient-medical-care-use-and-substance-use-among-rural-stimulant-users
#9
Michael A Cucciare, Xiaotong Han, Christine Timko, Nickolas Zaller, Kristina M Kennedy, Brenda M Booth
BACKGROUND: Negative views toward substance use treatment among some rural substance users and limited treatment resources in rural areas likely affect substance use utilization. It is therefore important to determine whether accessing healthcare options other than substance use treatment, specifically outpatient medical care (OMC), is associated with reductions in substance use. OBJECTIVES: We examined whether use of OMC was associated with reductions in substance use among rural substance users over a three-year period...
June 29, 2017: American Journal of Drug and Alcohol Abuse
https://www.readbyqxmd.com/read/28660381/overlooked-threats-to-respondent-driven-sampling-estimators-peer-recruitment-reality-degree-measures-and-random-selection-assumption
#10
Jianghong Li, Thomas W Valente, Hee-Sung Shin, Margaret Weeks, Alexei Zelenev, Gayatri Moothi, Heather Mosher, Robert Heimer, Eduardo Robles, Greg Palmer, Chinekwu Obidoa
Intensive sociometric network data were collected from a typical respondent driven sample (RDS) of 528 people who inject drugs residing in Hartford, Connecticut in 2012-2013. This rich dataset enabled us to analyze a large number of unobserved network nodes and ties for the purpose of assessing common assumptions underlying RDS estimators. Results show that several assumptions central to RDS estimators, such as random selection, enrollment probability proportional to degree, and recruitment occurring over recruiter's network ties, were violated...
June 28, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28650399/social-network-clustering-and-the-spread-of-hiv-aids-among-persons-who-inject-drugs-in-two-cities-in-the-philippines
#11
Ashton M Verdery, Nalyn Siripong, Brian W Pence
INTRODUCTION: The Philippines has seen rapid increases in HIV prevalence among people who inject drugs. We study two neighboring cities where a linked HIV epidemic differed in timing of onset and levels of prevalence. In Cebu, prevalence rose rapidly from under 1% to 54% between 2009 and 2011 and remained high through 2013. In nearby Mandaue, HIV remained below 4% through 2011 then rose rapidly to 38% by 2013. OBJECTIVES: We hypothesize that infection prevalence differences in these cities may owe to aspects of social network structure, specifically levels of network clustering...
June 22, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28648353/healthcare-contact-and-treatment-uptake-following-hepatitis-c-virus-screening-and-counseling-among-rural-appalachian-people-who-use-drugs
#12
Dustin B Stephens, April M Young, Jennifer R Havens
BACKGROUND: Hepatitis C virus (HCV) remains a major contributor to morbidity and mortality worldwide. Since 2009, Kentucky has led the United States in cases of acute HCV, driven largely by injection drug use in rural areas. Improved treatment regimens hold promise of mitigating the impact and transmission of HCV, but numerous barriers obstruct people who inject drugs (PWID) from receiving care, particularly in medically underserved settings. METHODS: 503 rural people who use drugs were recruited using respondent-driven sampling and received HCV screening and post-test counseling...
June 22, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28636234/association-of-recent-gay-related-stressful-events-and-emotional-distress-with-suicidal-behaviors-over-12%C3%A2-months-in-chinese-men-who-have-sex-with-men
#13
Liya Yu, Yanxia Li, Li Liu, Shuang Li, Jun Na, Xiaoxia An, Yan Zhou, Yuan Gu, Xuejuan Bi, Huijuan Mu, Rui Zhang, Wen Dong, Guowei Pan
INTRODUCTION: The study was designed to assess the association of gay-related stressful events (GRSEs) and emotional distress with suicidal behaviors over a 12-month period in Chinese men who have sex with men (MSM). METHODS: A total of 807 MSM were recruited using a respondent-driven sampling method from 4 cities in northeastern China. The GRSEs were measured using the Gay-related Stressful Life Events Scale, depression using the Self-rating Depression Scale, and anxiety using the Self-rating Anxiety Scale...
June 21, 2017: Asia-Pacific Psychiatry: Official Journal of the Pacific Rim College of Psychiatrists
https://www.readbyqxmd.com/read/28634152/ensuring-inclusion-of-adolescent-key-populations-at-higher-risk-of-hiv-exposure-recommendations-for-conducting-biological-behavioral-surveillance-surveys
#14
Lisa Grazina Johnston, Justine Sass, Jeffry Acaba, Wing-Sie Cheng, Shirley Mark Prabhu
Ending acquired immune deficiency syndrome (AIDS) depends on greater efforts to reduce new human immunodeficiency virus (HIV) infections and prevent AIDS-related deaths among key populations at highest HIV risk, including males who have sex with males, sex workers, and people who inject drugs. Although adolescent key populations (AKP) are disproportionately affected by HIV, they have been largely ignored in HIV biological behavioral surveillance survey (BBSS) activities to date. This paper reviews current ethical and sampling challenges and provides suggestions to ensure AKP are included in surveillance activities, with the aim being to enhance evidence-informed, strategic, and targeted funding allocations and programs toward ending AIDS among AKP...
June 20, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/28633387/anal-intercourse-among-female-sex-workers-in-c%C3%A3-te-d-ivoire-prevalence-determinants-and-model-based-estimates-of-the-population-level-impact-on-hiv-transmission
#15
Mathieu Maheu-Giroux, Stefan Baral, Juan F Vesga, Daouda Diouf, Souleymane Diabaté, Michel Alary, Kouamé Abo, Marie-Claude Boily
Current evidence suggests that anal intercourse (AI) during sex work is common in sub-Saharan Africa, but few studies investigated the contribution of heterosexual AI to HIV epidemics. Using a respondent-driven sampling survey of female sex workers (FSW) in Abidjan (2014), we estimated AI prevalence and frequency. Poisson regressions were used to identify AI determinants. About 20% of FSW (N = 466) engaged in AI during a normal week (95% confidence intervals: 15-26%). Women who performed AI were generally younger, had been selling sex for longer, were born in Côte d'Ivoire, reported higher sex-work income, more frequent sex in public places, and violence from clients than women not reporting AI...
June 14, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28626270/impact-of-a-student-pharmacist-driven-medication-reconciliation-and-antidepressant-treatment-history-project-at-a-depression-clinic-a-pilot-study
#16
Stella S Tang, Leanna Jaward, Kristen Ward, Sagar V Parikh, Jolene R Bostwick
OBJECTIVES: To improve treatment of patients with depression, a new pilot service project involving student pharmacists who would conduct medication reconciliation and review of antidepressant treatment history was created and evaluated. EXPERIMENTAL DESIGN: A prospective study conducted at the University of Michigan Depression Center. PRINCIPAL OBSERVATIONS: From an initial sample of 78 referrals, 41 subjects were reached by phone, with 34 completing medication reconciliation and antidepressant treatment history...
May 15, 2017: Psychopharmacology Bulletin
https://www.readbyqxmd.com/read/28622403/using-network-sampling-and-recruitment-data-to-understand-social-structures-related-to-community-health-in-a-population-of-people-who-inject-drugs-in-rural-puerto-rico
#17
Mayra Coronado-García, Courtney R Thrash, Melissa Welch-Lazoritz, Robin Gauthier, Juan Carlos Reyes, Bilal Khan, Kirk Dombrowski
OBJECTIVE: This research examined the social network and recruitment patterns of a sample of people who inject drugs (PWIDs) in rural Puerto Rico, in an attempt to uncover systematic clustering and between-group social boundaries that potentially influence disease spread. METHODS: Respondent driven sampling was utilized to obtain a sample of PWID in rural Puerto Rico. Through eight initial "seeds", 317 injection drug users were recruited. Using recruitment patterns of this sample, estimates of homophily and affiliation were calculated using RDSAT...
June 2017: Puerto Rico Health Sciences Journal
https://www.readbyqxmd.com/read/28622097/evolution-of-cytokines-and-inflammatory-biomarkers-during-infliximab-induction-therapy-and-the-impact-of-inflammatory-burden-on-primary-response-in-patients-with-crohn-s-disease
#18
Thomas Billiet, Isabelle Cleynen, Vera Ballet, Karolien Claes, Fred Princen, Sharat Singh, Marc Ferrante, Gert Van Assche, Ann Gils, Severine Vermeire
OBJECTIVE: Primary non-response to infliximab in Crohn's disease is still incompletely understood. Our aim was to further characterize the role of inflammatory burden during infliximab induction therapy. MATERIALS AND METHODS: We studied a well-characterized cohort of 201 anti-TNF naive Crohn's disease patients treated with infliximab 5mg/kg at week 0, 2, 6 and 14 who had serum samples drawn just before every infusion. All serum samples were analyzed for CRP, albumin, TNF, IFN-γ, IL-6, IL-8, IL-10, infliximab trough concentrations (in-house-developed ELISA) and antibodies to infliximab (HMSA, Prometheus Laboratories Inc...
June 16, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28612212/risk-behaviors-for-hiv-and-hcv-infection-among-people-who-inject-drugs-in-hai-phong-viet-nam-2014
#19
Huong Thi Duong, Don Des Jarlais, Oanh Hai Thi Khuat, Kamyar Arasteh, Jonathan Feelemyer, Pham Minh Khue, Hoang Thi Giang, Didier Laureillard, Vinh Vu Hai, Roselyne Vallo, Laurent Michel, Jean Pierre Moles, Nicolas Nagot
We examined the potential for HIV and hepatitis C (HCV) transmission across persons who inject drugs (PWID), men-who-have-sex-with-men (MSM) and female commercial sex workers (CSW) PWID and the potential for sexual transmission of HIV from PWID to the general population in Hai Phong, Viet Nam. Using respondent driven and convenience sampling we recruited 603 participants in 2014. All participants used heroin; 24% used non-injected methamphetamine. HIV prevalence was 25%; HCV prevalence was 67%. HIV infection was associated with HCV prevalence and both infections were associated with length of injecting career...
June 13, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28607411/an-immunization-strategy-for-hidden-populations
#20
Saran Chen, Xin Lu
Hidden populations, such as injecting drug users (IDUs), sex workers (SWs) and men who have sex with men (MSM), are considered at high risk of contracting and transmitting infectious diseases such as AIDS, gonorrhea, syphilis etc. However, public health interventions to such groups are prohibited due to strong privacy concerns and lack of global information, which is a necessity for traditional strategies such as targeted immunization and acquaintance immunization. In this study, we introduce an innovative intervention strategy to be used in combination with a sampling approach that is widely used for hidden populations, Respondent-driven Sampling (RDS)...
June 12, 2017: Scientific Reports
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