Laser Application in Medical Sciences Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Electronic address: abdollahima@sbmu.ac.ir.
Universidad de Castilla-La Mancha. Department of Inorganic, Organic Chemistry and Biochemistry. Faculty of Chemical and Technological Sciences. School of Medicine of Ciudad Real. Regional Centre of Biomedical Research (CRIB), Avenida Camilo José Cela, 10, 13071 Ciudad Real, Spain.
Universidad de Castilla-La Mancha. Department of Inorganic, Organic Chemistry and Biochemistry. Faculty of Chemical and Technological Sciences. School of Medicine of Ciudad Real. Regional Centre of Biomedical Research (CRIB), Avenida Camilo José Cela, 10, 13071 Ciudad Real, Spain. Electronic address: Davidagustin.leon@uclm.es.
Universidad de Castilla-La Mancha. Department of Inorganic, Organic Chemistry and Biochemistry. Faculty of Chemical and Technological Sciences. School of Medicine of Ciudad Real. Regional Centre of Biomedical Research (CRIB), Avenida Camilo José Cela, 10, 13071 Ciudad Real, Spain.
Laser Application in Medical Sciences Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Respondent-driven sampling (RDS) is a peer chain-recruitment method for populations without a sampling frame or that are hard-to-reach. Although RDS is usually done face-to-face, the online version (W...
Description of the development phase: guidance is provided addressing aspects related to the formative research, the design of the questionnaire, the implementation of the coupon system using a free s...
The application of the survey: we discuss about the monitoring strategies throughout the recruitment process and potential problems along with proposed solutions....
Under certain conditions, it is possible to obtain a sample with recruitment performance similar to that of other RDS without the need for monetary incentives and using a free access software, conside...
We report a novel model of the selective binding mechanism of adenosine-specific DNA aptamer. Our theoretical investigations of AMP (Adenosine monophosphate) dissociation from aptamer-AMP complexes re...
Estimation of abortion incidence, particularly in settings where most abortions occur outside of health facility settings, is critical for understanding information gaps and service delivery needs in ...
In this study, we tested the feasibility of using RDS to recruit participants into a study about abortion and estimated the proportion of people who ever attempted abortion as well as 1-year and 5-yea...
Participants were eligible if they identified as a woman; were aged between 15 and 49 years; spoke English, Tswana, isiZulu, Sotho, or Xhosa; and lived in Soweto. Working with community partners, we i...
Between April 4, 2018, and December 17, 2018, 849 eligible participants were recruited into the study. The estimated proportion of people who ever attempted abortion was 12.1% (95% CI 9.7%-14.4%). A t...
The estimated proportion of people who ever attempted abortion of 12% (102/849) in our study likely represents a substantial underestimation of the actual proportion of abortion attempts among this st...
The poor aqueous solubility of curcumin (CUR) obstructs its wide utilization in nutraceuticals, cosmetics, and pharmaceutical companies. This study is dedicated to investigate the stability of CUR ins...
Hypertension is a major cause of morbidity among older adults. We investigated older adults' access to health services in Myanmar by focusing on unmet needs in diagnosing hypertension. This study aims...
This is a secondary data analysis of the survey which is a cross-sectional study conducted with older adults (aged ≥ 60 years) in the Yangon and Bago regions of Myanmar. Objective indicators of health...
Data from 1200 people, 600 from each of the two regions, were analysed. Altogether 483 (40.3%) participants were male, 530 (44.2%) were aged ≥ 70 years, and 857 were diagnosed with hypertension based ...
There are barriers to accessing health services for hypertension diagnosis, as evidenced by the regional disparities found in this study, and charitable clinics may decrease the financial barrier to t...
Assessing transmission of SARS-CoV-2 by children in schools is of crucial importance to inform public health action. We assessed frequency of acquisition of SARS-CoV-2 by contacts of pupils with COVID...
We did a prospective cohort and environmental sampling study in London, UK in eight schools. Schools reporting new cases of SARS-CoV-2 infection to local health protection teams were invited to take p...
Between October, 2020, and July, 2021 from the eight schools included, secondary transmission of SARS-CoV-2 was not detected in 28 bubble contacts, representing ten bubble classes (participation rate ...
There was no evidence of large-scale SARS-CoV-2 transmission in schools with precautions in place. Low levels of environmental contamination in schools are consistent with low transmission frequency a...
UK Research and Innovation and UK Department of Health and Social Care, National Institute for Health and Care Research....
The HIV epidemic still high among key-populations in Brazil, especially among transgender women (TGW). The aim of this study was to investigate the prevalence of HIV infection among TGW and to analyze...
The studies were conducted between 2014 and 2016 and 2016-2017 and employed Respondent-Driven Sampling (RDS) sampling, comprising 127 and 161 TGW residents of Salvador, Bahia. The outcome was the posi...
The HIV prevalence was 9.0% (95%CI: 4.2-18.2) and 24.3% (95%CI: 16.2-34.9). In the first study, factors associated with HIV prevalence were experiencing discrimination by the family (OR 8.22; 95%CI: 1...
We found disproportionately high HIV prevalence among TGW, which underscores the context of vulnerability for this population. The data point to the urgency for intensification and expansion of access...
Respondent-driven sampling (RDS) uses long-chain referral whereby members of the target population recruit other members. We describe the use of RDS for a mixed-methods sexual and reproductive health ...
Initial seeds for the cross-sectional surveys were selected from adolescents aged 15-19 residing in urban informal settlements. Participants were provided up to five referral coupons to distribute....
Across four communities, 18 seeds were selected, 13,489 coupons distributed, and 3381 adolescents referred, yielding a 25% coupon return rate. We enrolled 3061 participants for a 23% survey rate. Medi...
Our study demonstrated that RDS is a feasible and efficient approach for recruiting a large sample of adolescents. Though our research focused on SRH, many adolescents residing in the impoverished urb...
Female Sex Workers (FSWs) are a hard-to-reach and understudied population, especially those who begin selling sex at a young age. In one of the most economically disadvantaged regions in Malawi, a lar...
In most circumstances, probability sampling is the only way to ensure unbiased inference about population quantities where a complete census is not possible. As we enter the era of 'big data', however...
