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Respondent driven sampling

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https://www.readbyqxmd.com/read/27925776/providers-and-administrators-perceptions-of-complementary-and-integrative-health-practices-across-the-veterans-health-administration
#1
Carol E Fletcher, Allison R Mitchinson, Erika Trumble, Daniel B Hinshaw, Jeffery A Dusek
OBJECTIVES: Use of complementary and integrative health (CIH) therapies is being promoted by the Veterans Health Administration (VA), but promotion may not equate to adoption. The purpose of this study was to explore whether perceptions regarding CIH at one VA medical center (VAMC) were similar to perceptions from a sample of other VAMCs. DESIGN: This article reports a subset of qualitative findings from a mixed-methods study. SETTING/PARTICIPANTS: Sites were recruited through a VA-wide CIH listserver...
December 7, 2016: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/27919289/correlates-of-sex-trading-among-male-non-injecting-drug-users-in-myanmar-a-cross-sectional-study
#2
Yu Mon Saw, Thu Nandar Saw, Kyi Mar Wai, Krishna C Poudel, Hla Hla Win
BACKGROUND: Sex trading is a recognized risk factor for human immune deficiency virus infection and other sexually transmitted infections among non-injecting drug users (NIDUs). However, very little research has addressed the factors associated with sex trading among male NIDUs in Myanmar. METHODS: A cross-sectional study was conducted from January to February 2010 using the respondent-driven sampling method. In total, 210 NIDUs aged between 18 and 49 years, with no history of injecting drug use, and who used non-injected illicit drugs in the last 6 months were recruited...
December 5, 2016: Harm Reduction Journal
https://www.readbyqxmd.com/read/27913795/prevalence-of-sti-symptoms-and-high-levels-of-stigma-in-sti-healthcare-among-men-who-have-sex-with-men-in-dar-es-salaam-tanzania-a-respondent-driven-sampling-study
#3
Michael W Ross, Markus Larsson, Joyce E Nyoni, Anette Agardh
Symptoms of sexually transmitted infections (STIs), whether they are presented for treatment or diagnosis, and how they are received by the clinician where they are presented, may be concomitants of stigma associated with homosexuality in homophobic climates. We analyzed respondent-driven sampling data from a study on 200 young men who have sex with men (MSM) in Dar es Salaam, Tanzania to examine sample prevalence, treatment and clinician response to 10 symptoms potentially associated with STIs. Survey measures included 10 self-reported STI symptoms, further specified according to location (genital, anal, oral), further specified according to place of diagnosis, place of, treatment whether there was pharmacy treatment or self-medication, healthcare worker (HCW) inquiries about source of infection and whether the HCW was polite...
December 2, 2016: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/27911038/quantitating-the-cell-turning-images-into-numbers-with-imagej
#4
REVIEW
Ellen T Arena, Curtis T Rueden, Mark C Hiner, Shulei Wang, Ming Yuan, Kevin W Eliceiri
Modern biological research particularly in the fields of developmental and cell biology has been transformed by the rapid evolution of the light microscope. The light microscope, long a mainstay of the experimental biologist, is now used for a wide array of biological experimental scenarios and sample types. Much of the great developments in advanced biological imaging have been driven by the digital imaging revolution with powerful processors and algorithms. In particular, this combination of advanced imaging and computational analysis has resulted in the drive of the modern biologist to not only visually inspect dynamic phenomena, but to quantify the involved processes...
December 2, 2016: Wiley Interdisciplinary Reviews. Developmental Biology
https://www.readbyqxmd.com/read/27896553/associations-of-hiv-testing-sexual-risk-and-access-to-prevention-among-female-sex-workers-in-the-dominican-republic
#5
Lisa G Johnston, Luis Bonilla, Tessie Caballero, Martha Rodriguez, Yordana Dolores, Miguel Angel de la Rosa, Annie Malla, Janet Burnett, Víctor Terrero, Sam Martinez, Oliver Morgan
The Caribbean region has one of the highest proportions of HIV in the general female population attributable to sex work. In 2008 (n = 1256) and 2012 (n = 1525) in the Dominican Republic, HIV biological and behavioral surveys were conducted among female sex workers (FSW) in four provinces using respondent driven sampling. Participants were ≥15 years who engaged in intercourse in exchange for money in the past 6 months and living/working in the study province. There were no statistically significant changes in HIV and other infections prevalence from 2008 to 2012, despite ongoing risky sexual practices...
November 28, 2016: AIDS and Behavior
https://www.readbyqxmd.com/read/27888205/engagement-in-the-hiv-care-cascade-and-barriers-to-antiretroviral-therapy-uptake-among-female-sex-workers-in-port-elizabeth-south-africa-findings-from-a-respondent-driven-sampling-study
#6
Sheree Schwartz, Andrew Lambert, Nancy Phaswana-Mafuya, Zamakayise Kose, Mfezi Mcingana, Claire Holland, Sosthenes Ketende, Clarence Yah, Stephanie Sweitzer, Harry Hausler, Stefan Baral
BACKGROUND: Female sex workers (FSWs) are disproportionately affected by HIV, even in the context of broadly generalised HIV epidemics such as South Africa. This has been observed in spite of the individual and population-level benefits of HIV treatment. We characterise the HIV care cascade among FSWs and relationships with antiretroviral therapy (ART) use. METHODS: FSWs ≥18 years were recruited through respondent-driven sampling into a cross-sectional study in Port Elizabeth, South Africa...
November 25, 2016: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/27864245/social-networks-of-men-who-have-sex-with-men-and-their-implications-for-hiv-sti-interventions-results-from-a-cross-sectional-study-using-respondent-driven-sampling-in-a-large-and-a-small-city-in-tanzania
#7
Michael W Ross, Markus Larsson, Jerry Jacobson, Joyce Nyoni, Anette Agardh
OBJECTIVE: Men who have sex with men (MSM) in sub-Saharan Africa remain hidden and hard to reach for involvement in HIV and sexually transmitted infection (STI) services. The aim of the current study was to describe MSM social networks in a large and a small Tanzanian city in order to explore their utility for peer-based healthcare interventions. METHODS: Data were collected through respondent-driven sampling (RDS) in Dar es Salaam (n=197) and in Tanga (n=99) in 2012 and 2013, using 5 and 4 seeds, respectively...
November 18, 2016: BMJ Open
https://www.readbyqxmd.com/read/27862574/person-misfit-on-the-inventory-of-depressive-symptomatology-low-quality-self-report-or-true-atypical-symptom-profile
#8
Judith M Conijn, Philip Spinhoven, Rob R Meijer, Femke Lamers
Person misfit on a self-report measure refers to a response pattern that is unlikely given a theoretical measurement model. Person misfit may reflect low quality self-report data, for example due to random responding or misunderstanding of items. However, recent research in the context of psychopathology suggests that person misfit may reflect atypical symptom profiles that have implications for diagnosis or treatment. We followed-up on Wanders et al. (Journal of Affective Disorders, 180, 36-43, 2015) who investigated person misfit on the Inventory of Depressive Symptomatology (IDS) in the Netherlands Study of Depression and Anxiety (n = 2,981)...
November 14, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27852234/does-size-really-matter-a-sensitivity-analysis-of-number-of-seeds-in-a-respondent-driven-sampling-study-of-gay-bisexual-and-other-men-who-have-sex-with-men-in-vancouver-canada
#9
Nathan John Lachowsky, Justin Tyler Sorge, Henry Fisher Raymond, Zishan Cui, Paul Sereda, Ashleigh Rich, Eric A Roth, Robert S Hogg, David M Moore
BACKGROUND: Respondent-driven sampling (RDS) is an increasingly used peer chain-recruitment method to sample "hard-to-reach" populations for whom there are no reliable sampling frames. Implementation success of RDS varies; one potential negative factor being the number of seeds used. METHODS: We conducted a sensitivity analysis on estimates produced using data from an RDS study of gay, bisexual and other men who have sex with men (GBMSM) aged ≥16 years living in Vancouver, Canada...
November 16, 2016: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/27851715/brief-report-high-hiv-incidence-in-a-south-african-community-of-men-who-have-sex-with-men-results-from-the-mpumalanga-men-s-study-2012-2015
#10
Tim Lane, Thomas Osmand, Alexander Marr, Helen Struthers, James A McIntyre, Starley B Shade
Cross-sectional studies among African men who have sex with men (MSM) populations demonstrate high HIV prevalence, but few incidence estimates exist. The Mpumalanga Men's Study in Gert Sibande, Mpumalanga province, South Africa, involved 3 serial cross-sectional surveys of MSM recruited through respondent-driven sampling between 2012 and 2015. Successive surveys recaptured a nested cohort of 179, contributing 144.3 person-years (PY) of observation. We observed 18 seroconversions, or incidence of 12.5/100 (PY) (95% confidence interval CI: 8...
December 15, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/27842543/design-of-the-indian-nca-study-indian-national-collaboration-on-aids-a-cluster-randomized-trial-to-evaluate-the-effectiveness-of-integrated-care-centers-to-improve-hiv-outcomes-among-men-who-have-sex-with-men-and-persons-who-inject-drugs-in-india
#11
Sunil S Solomon, Gregory M Lucas, David D Celentano, Allison M McFall, Elizabeth Ogburn, Lawrence H Moulton, Aylur K Srikrishnan, M Suresh Kumar, Santhanam Anand, Suniti Solomon, Shruti H Mehta
BACKGROUND: Globally, men who have sex with men and people who inject drugs remain disproportionately affected by HIV, but they have not been the focus of prevention and treatment interventions in many resource-limited settings. METHODS/DESIGN: This cluster-randomized trial (conducted from June 2012 to June 2017), evaluates whether single-venue, integrated delivery of core HIV services to vulnerable high-risk populations improves service utilization and consequently, HIV testing and other outcomes along the HIV care continuum...
November 14, 2016: BMC Health Services Research
https://www.readbyqxmd.com/read/27832761/prevalence-of-prior-hiv-testing-and-associated-factors-among-msm-in-zhejiang-province-china-a-cross-sectional-study
#12
Runhua Li, Xiaohong Pan, Qiaoqin Ma, Hui Wang, Lin He, Tingting Jiang, Dayong Wang, Yan Zhang, Xingliang Zhang, Shichang Xia
BACKGROUND: Men who have sex with men (MSM) have become one of high-risk population for human immunodeficiency virus (HIV) infection, due to their multiple sex partners and unprotected anal intercourse. Promoting HIV testing is an effective strategy for the prevention and control of HIV infection. We assessed the factors associated with a prior HIV testing history, which could provide guidance for implementation of future HIV intervention programs. METHODS: A cross-sectional study was conducted in three cities of Zhejiang Province, namely, Hangzhou, Ningbo and Wenzhou, using respondent-driven sampling, between December 2013 and June 2014...
November 10, 2016: BMC Public Health
https://www.readbyqxmd.com/read/27832026/an-event-level-analysis-of-condom-use-during-anal-intercourse-among-self-reported-human-immunodeficiency-virus-negative-gay-and-bisexual-men-in-a-treatment-as-prevention-environment
#13
Nathan John Lachowsky, Zach Tanner, Zishan Cui, Paul Sereda, Asheligh Rich, Jody Jollimore, Julio Sg Montaner, Robert S Hogg, David M Moore, Eric A Roth
BACKGROUND: We sought to identify factors associated with condom use during anal intercourse among self-identified human immunodeficiency virus-negative gay, bisexual, and other men who have sex with men (GBM) in Vancouver, Canada following "treatment as prevention" (TasP) scale-up in 2010. METHODS: Sexually active GBM were recruited using respondent-driven sampling from 2012 to 2014. We analyzed participants' most recent sexual encounter with up to their last 5 sexual partners within the past 6 months...
December 2016: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/27828609/mind-the-gap-implementation-challenges-break-the-link-between-hiv-aids-research-and-practice
#14
Sarah MacCarthy, Sari Reisner, Michael Hoffmann, Amaya Perez-Brumer, Alfonso Silva-Santisteban, Amy Nunn, Leonardo Bastos, Mauricio Teixeira Leite de Vasconcellos, Ligia Kerr, Francisco Inácio Bastos, Inês Dourado
Sampling strategies such as respondent-driven sampling (RDS) and time-location sampling (TLS) offer unique opportunities to access key populations such as men who have sex with men (MSM) and transgender women. Limited work has assessed implementation challenges of these methods. Overcoming implementation challenges can improve research quality and increase uptake of HIV services among key populations. Drawing from studies using RDS in Brazil and TLS in Peru, we summarize challenges encountered in the field and potential strategies to address them...
November 3, 2016: Cadernos de Saúde Pública
https://www.readbyqxmd.com/read/27809815/health-literacy-the-missing-link-in-improving-the-health-of-somali-immigrant-women-in-oslo
#15
Abdi A Gele, Kjell Sverre Pettersen, Liv Elin Torheim, Bernadette Kumar
BACKGROUND: Existing studies report a positive association between inadequate health literacy and immigrant's adverse health outcomes. Despite substantial research on this topic among immigrants, little is known about the level of health literacy among Somali women in Europe, and particularly in Norway. METHODS: A cross sectional study using respondent driven sampling was conducted in Oslo, Norway. A sample of 302 Somali women, 25 years and older, was interviewed using the short version of the European Health Literacy Questionnaire...
November 3, 2016: BMC Public Health
https://www.readbyqxmd.com/read/27798432/hiv-related-sexual-risk-among-transgender-men-who-are-gay-bisexual-or-have-sex-with-men
#16
Ayden I Scheim, Greta R Bauer, Robb Travers
BACKGROUND: This study is among the first to examine factors associated with HIV-related sexual risk among transgender men and other transmasculine persons who are gay, bisexual, or who have sex with men (T-GBMSM). METHODS: In 2009-2010, 433 transgender people in Ontario, Canada participated in a multi-mode respondent-driven sampling survey, including 158 T-GBMSM. Analyses were weighted using RDS II methods to adjust for differential recruitment probabilities; confidence intervals were adjusted for clustering by shared recruiter...
October 27, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/27768992/factors-associated-with-syphilis-seroreactivity-among-polydrug-users-in-northeast-brazil-a-cross-sectional-study-using-respondent-driven-sampling
#17
Cremildo João Baptista, Ines Dourado, Sandra Brignol, Tarcísio de Matos Andrade, Francisco Inácio Bastos
BACKGROUND: The burden of sexually transmitted infections (STIs), such as syphilis, is higher in low-income countries, with serious consequences and profound impact on sexual and reproductive health and human immunodeficiency virus (HIV) spread. Syphilis prevalence tend to be higher among people who misuse drugs than in the general population. OBJECTIVE: To assess syphilis and associated factors among polydrug users (PDU) in the city of Salvador, Northeast Brazil...
October 18, 2016: International Journal on Drug Policy
https://www.readbyqxmd.com/read/27765131/-surveillance-for-hiv-infection-in-msm-selected-through-respondent-driven-sampling-in-beijing-2005-2012
#18
Y M Sun, W D Sun, H Y Lu, R L Xin, S F He, Q Zhang, H Yue, X G Fan, X Y Ma
Objective: To understand the HIV prevalence among men who have sex with men (MSM) and discuss the feasibility of respondent driven sampling (RDS) as a tool to conduct long term HIV surveillance in MSM in Beijing. Methods: From 2005 to 2012 RDS was used to recruit MSM for face-to-face interview with structured questionnaire to collect their demographic characteristics and HIV risk-related behavior. Blood samples were collected from them for HIV test. Results: A total of 427, 540, 607, 614, 616, 602, 579 and 600 MSM were surveyed, respectively, from 2005 to 2012...
October 10, 2016: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/27763465/utility-of-respondent-driven-sampling-to-reach-disadvantaged-emerging-adults-for-assessment-of-substance-use-weight-and-sexual-behaviors
#19
Jalie A Tucker, Cathy A Simpson, Susan D Chandler, Casey A Borch, Susan L Davies, Shatomi J Kerbawy, Terri H Lewis, M Scott Crawford, JeeWon Cheong, Max Michael
Emerging adulthood often entails heightened risk-taking with potential life-long consequences, and research on risk behaviors is needed to guide prevention programming, particularly in under-served and difficult to reach populations. This study evaluated the utility of Respondent Driven Sampling (RDS), a peer-driven methodology that corrects limitations of snowball sampling, to reach at-risk African American emerging adults from disadvantaged urban communities. Initial "seed" participants from the target group recruited peers, who then recruited their peers in an iterative process (110 males, 234 females; M age = 18...
2016: Journal of Health Care for the Poor and Underserved
https://www.readbyqxmd.com/read/27761685/the-relationship-between-social-support-hiv-serostatus-and-perceived-likelihood-of-being-hiv-positive-among-self-settled-female-foreign-migrants-in-cape-town-south-africa
#20
Margaret Giorgio, Loraine Townsend, Yanga Zembe, Mireille Cheyip, Sally Guttmacher, Farzana Kapadia, Cathy Mathews
Female cross-border migrants experience elevated risks for HIV, and migrants in South Africa may face additional risks due to the country's underlying HIV prevalence. These risks may be mitigated by the receipt of social support. A behavioral risk-factor survey was administered using respondent-driven sampling. Multivariable regression models assessed the relationships between social support and two HIV outcomes: HIV serostatus and perceived HIV status. Low social support was not significantly associated with HIV status (aOR = 1...
October 19, 2016: Journal of Immigrant and Minority Health
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