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Respondent driven sampling

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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
https://www.readbyqxmd.com/read/28605424/identification-of-homophily-and-preferential-recruitment-in-respondent-driven-sampling
#9
Forrest W Crawford, Peter M Aronow, Li Zeng, Jianghong Li
Respondent-driven sampling (RDS) is a link-tracing procedure used in epidemiological research on hidden or hard-to-reach populations in which subjects recruit others via their social network. Estimates from RDS studies may have poor statistical properties due to statistical dependence in sampled subjects' traits. Two distinct mechanisms account for dependence in an RDS study: homophily, the tendency for individuals to share social ties with others exhibiting similar characteristics, and preferential recruitment, in which recruiters do not recruit uniformly at random from their network alters...
June 9, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28604444/antiretroviral-therapy-use-among-hiv-infected-people-who-inject-drugs-20-cities-united-states-2009-2015
#10
Brooke E Hoots, Teresa J Finlayson, Dita Broz, Gabriela Paz-Bailey
BACKGROUND: Approximately 16% of infections among those living with diagnosed HIV infection in the United States are attributable to injection drug use. Antiretrovirals (ARVs) are recommended for all infected persons to improve health and prevent transmission. Using data from National HIV Behavioral Surveillance, we evaluated changes in ARV use from 2009 to 2015 among HIV-positive people who inject drugs (PWID). METHODS: PWID were recruited by respondent-driven sampling in 20 cities...
July 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28604434/trends-in-hiv-and-hcv-risk-behaviors-and-prevalent-infection-among-people-who-inject-drugs-in-new-york-city-2005-2012
#11
Alan Neaigus, Kathleen H Reilly, Samuel M Jenness, Holly Hagan, Travis Wendel, Camila Gelpi-Acosta, David M Marshall
BACKGROUND: We assess trends in HIV and hepatitis C virus (HCV) risk behaviors and prevalent infection among people who inject drugs (PWID) in New York City (NYC). METHODS: PWID in NYC were sampled using respondent-driven sampling in 2005, 2009, and 2012 (serial cross sections) for the Centers for Disease Control and Prevention-sponsored National HIV Behavioral Surveillance study. Participants were interviewed about their current (≤12 months) risk behaviors and tested for HIV and HCV...
July 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28604427/health-care-use-and-hiv-related-behaviors-of-black-and-latina-transgender-women-in-3-us-metropolitan-areas-results-from-the-transgender-hiv-behavioral-survey
#12
Damian J Denson, Paige M Padgett, Nicole Pitts, Gabriela Paz-Bailey, Trista Bingham, Juli-Ann Carlos, Pamela McCann, Nikhil Prachand, Jan Risser, Teresa Finlayson
PURPOSE: HIV prevalence estimates among transgender women in the United States are high, particularly among racial/ethnic minorities. Despite increased HIV risk and evidence of racial disparities in HIV prevalence among transgender women, few data are available to inform HIV prevention efforts. METHODS: A transgender HIV-related behavioral survey conducted in 2009 in 3 US metropolitan areas (Chicago, Houston, and Los Angeles County), used respondent-driven sampling to recruit 227 black (n = 139) and Latina (n = 88) transgender women...
July 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28604426/incarceration-sexual-risk-related-behaviors-and-hiv-infection-among-women-at-increased-risk-of-hiv-infection-20-united-states-cities
#13
Akilah Wise, Teresa Finlayson, Lina Nerlander, Catlainn Sionean, Gabriela Paz-Bailey
BACKGROUND: Women involved in the criminal justice system experience multiple risk factors that increase the likelihood of acquiring HIV infection. We evaluated the prevalence of incarceration and compared behaviors among women with and without an incarceration history. METHODS: We use the 2013 National HIV Behavioral Surveillance data, which uses respondent-driven sampling. We evaluate the association between incarceration and the following past 12 months outcomes: exchange sex, multiple casual sex partners (≥3), multiple condomless sex partners (≥3), HIV test, and sexually transmitted infection diagnoses...
July 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28604425/reductions-in-hiv-diagnoses-among-african-american-women-a-search-for-explanations
#14
Wade Ivy, Ndidi Nwangwu-Ike, Gabriela Paz-Bailey
BACKGROUND: African American women experienced a 46% reduction in the rate of HIV diagnoses from 56.0 in 2008, to 30.0 in 2014 (per 100,000). The reasons for this decrease are unknown; however, we hypothesize that improvements in socioeconomic status, health care access, and risk behaviors may have contributed to this reduction. METHODS: We analyzed data from 2006, 2010, and 2013 of the National HIV Behavioral Surveillance system. African American women living at or below poverty were surveyed from 19 United States cities using respondent-driven and venue-based sampling, and tested for HIV infection...
July 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28603875/impairments-of-spontaneous-and-deliberative-mentalizing-co-occur-yet-dissociate-in-schizophrenia
#15
Robyn Langdon, Michaela Flynn, Emily Connaughton, Martin Brüne
OBJECTIVES: Evidence of impairment in explicit mentalizing in people with schizophrenia has inspired interventions to improve awareness of others' mental states in these individuals. Less is known of implicit mentalizing in schizophrenia, with current findings mixed. We sought to resolve previous inconsistencies using Heider & Simmel's (H&S) classic animation to elicit spontaneous mentalizing and examined relations between spontaneous and deliberative mentalizing. METHODS: Forty-five schizophrenia outpatients and 27 general-community controls completed two explicit theory-of-mind (TOM) tasks and then described the H&S animation (to elicit spontaneous social attributions about emotionally driven, as well as goal-driven, behaviours), before and after an instruction to think of the shapes as people...
June 12, 2017: British Journal of Clinical Psychology
https://www.readbyqxmd.com/read/28601404/meeting-physical-activity-guidelines-the-role-of-personal-networks-among-residents-of-low-income-communities
#16
Stephanie Child, Andrew T Kaczynski, Spencer Moore
INTRODUCTION: Despite known benefits of regular physical activity (PA), residents of low-income communities have disproportionately high rates of physical inactivity. Mounting evidence suggests that social network characteristics may be associated with health behaviors, including PA. The purpose of the current study was to examine associations between egocentric network characteristics and meeting PA guidelines among residents of low-income and predominantly African-American communities...
June 7, 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28601086/burden-and-characteristics-of-hiv-infection-among-female-sex-workers-in-kampala-uganda-a-respondent-driven-sampling-survey
#17
Wolfgang Hladik, Andrew L Baughman, David Serwadda, Jordan W Tappero, Rachel Kwezi, Namakula D Nakato, Joseph Barker
BACKGROUND: Sex workers in Uganda are at significant risk for HIV infection. We characterized the HIV epidemic among Kampala female sex workers (FSW). METHODS: We used respondent-driven sampling to sample FSW aged 15+ years who reported having sold sex to men in the preceding 30 days; collected data through audio-computer assisted self-interviews, and tested blood, vaginal and rectal swabs for HIV, syphilis, neisseria gonorrhea, chlamydia trachomatis, and trichomonas vaginalis...
June 10, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28597939/precision-oncology-based-on-omics-data-the-nct-heidelberg-experience
#18
Peter Horak, Barbara Klink, Christoph Heining, Stefan Gröschel, Barbara Hutter, Martina Fröhlich, Sebastian Uhrig, Daniel Hübschmann, Matthias Schlesner, Roland Eils, Daniela Richter, Katrin Pfütze, Christina Geörg, Bettina Meißburger, Stephan Wolf, Angela Schulz, Roland Penzel, Esther Herpel, Martina Kirchner, Amelie Lier, Volker Endris, Stephan Singer, Peter Schirmacher, Wilko Weichert, Albrecht Stenzinger, Richard F Schlenk, Evelin Schröck, Benedikt Brors, Christof von Kalle, Hanno Glimm, Stefan Fröhling
Precision oncology implies the ability to predict which patients will likely respond to specific cancer therapies based on increasingly accurate, high-resolution molecular diagnostics as well as the functional and mechanistic understanding of individual tumors. While molecular stratification of patients can be achieved through different means, a promising approach is next-generation sequencing of tumor DNA and RNA, which can reveal genomic alterations that have immediate clinical implications. Furthermore, certain genetic alterations are shared across multiple histologic entities, raising the fundamental question of whether tumors should be treated by molecular profile and not tissue of origin...
June 9, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28583170/community-dialogues-for-child-health-results-from-a-qualitative-process-evaluation-in-three-countries
#19
Sandrine Martin, Jordana Leitão, Denis Muhangi, Anthony Nuwa, Dieterio Magul, Helen Counihan
BACKGROUND: Across the developing world, countries are increasingly adopting the integrated community case management of childhood illnesses (iCCM) strategy in efforts to reduce child mortality. This intervention's effectiveness is dependent on community adoption and changes in care-seeking practices. We assessed the implementation process of a theory-driven community dialogue (CD) intervention specifically designed to strengthen the support and uptake of the newly introduced iCCM services and related behaviours in three African countries...
June 5, 2017: Journal of Health, Population, and Nutrition
https://www.readbyqxmd.com/read/28577506/high-enhancer-downer-withdrawal-helper-multifunctional-nonmedical-benzodiazepine-use-among-young-adult-opioid-users-in-new-york-city
#20
Pedro Mateu-Gelabert, Lauren Jessell, Elizabeth Goodbody, Dongah Kim, Krista Gile, Jennifer Teubl, Cassandra Syckes, Kelly Ruggles, Jeffrey Lazar, Sam Friedman, Honoria Guarino
BACKGROUND: Benzodiazepines are a widely prescribed psychoactive drug; in the U.S., both medical and nonmedical use of benzodiazepines has increased markedly in the past 15 years. Long-term use can lead to tolerance and dependence, and abrupt withdrawal can cause seizures or other life-threatening symptoms. Benzodiazepines are often used nonmedically in conjunction with other drugs, and with opioids in particular-a combination that can increase the risk for fatal and non-fatal overdose...
May 31, 2017: International Journal on Drug Policy
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