Richard Lester
Research Classification
Research Interests
Relevant Thesis-Based Degree Programs
Affiliations to Research Centres, Institutes & Clusters
Research Options
Research Methodology
Recruitment
Global digital health for patient engagement in care and virtual care. Work in Canada, Africa and globally. Quantitative and qualitative studies, implementation research, data science, and digital health policy and ethics. Especially among scaling interventions to benefit vulnerable populations and health equity.
Passionate, self-motivated, high achieving. Interest in vigorous scientific method and digital health innovation and research.
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Supervision Enquiry
Great Supervisor Week Mentions
Thank you, Dr. Lester, for your friendly supervision and your dedication during the last years!
In our research group, Dr. Lester sparks innovative conversations between students from a wide range of backgrounds. From computer science students contributing to the development of a mobile health technology to public health researchers studying the implementation of this tech globally, he has a knack for translating information that serves a spectrum of interests. It really helps to bring together students who might otherwise work in silos. I've really appreciated his can-do attitude and the positive perspective he has when tackling complex problems in low-resource settings. He always makes his students feel capable and confident in their abilities and reminds us of the importance our research has in a broader context. As a student from a remote and isolated community, I value that Dr. Lester, his family, and the research group offer a sense of community I need to thrive. Thank you, Dr. Lester, for making anyone and everyone feel welcome in your lab. And I am so grateful for the accommodation of my dog as well; this helped me acclimatize to the city and make transitioning back into post-secondary an easier choice. Thank you!
Graduate Student Supervision
Doctoral Student Supervision
Dissertations completed in 2010 or later are listed below. Please note that there is a 6-12 month delay to add the latest dissertations.
Randomized clinical trials (RCT) are an important tool that has led to important reduction of global childhood mortality. Low and middle-income countries (LMICs) still face important challenge in stunting (low height-for-age) that can produce detrimental effects on child’s long-term development. Facing important challenges in stunting Rwanda has adopted stunting prevention with a particular focus on complementary feeding period ([CFP]: 6-24 months) as their national strategic plan. Rapid Pro, a community health workers program that provides routine health and monitoring services from pregnancy to five years of age using SMS, is a unique health system in Rwanda that can be used to improve linear growth for their children. A single overarching master protocol for an adaptive platform trial (APT) that could be embedded into Rapid Pro to determine comparative effectiveness of multi-component interventions on linear growth during CFP was developed. APTs are a new RCT design that allows for evaluation of multiple interventions against a common control using interim evaluation and flexibilities of allowing new interventions to be added during the trial. To inform the trial design, a landscape analysis of master protocols and APTs was done through a systematic literature review (SLR). This showed 83 master protocols, 16 of which were platform trials, that have been mostly conducted in the US (n=44/83) for pharmaceutical development (n=82/83). This was followed by an SLR with network meta-analysis (NMA) of LMIC-based RCTs studying interventions under the domains of micronutrients and food supplements, deworming, maternal education, and water, sanitation, and hygiene aimed to improve linear growth for children during CFP. An NMA of 79 RCTs involving 81,786 children showed largely equivocal results highlighting the need for more investigation with interventions being combined and tested as packages. The results of these findings were then presented to the governmental stakeholders to determine intervention packages to be tested and to inform the APT design. Simulations were performed to design Bayesian early stopping rules that could reduce the expected sample size while keeping type I error rates under 2.5%. The findings support the use of APTs for child health and other key areas in global health research.
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Background: Despite the availability of effective therapy, health outcomes are poor and costs associated with asthma are high. Consistent reports of sub-optimal medication adherence among adults with asthma highlight the importance of assessing the effect of interventions on medication adherence and exploring possible mechanisms to better understand how medication adherence can be promoted and supported.Objectives: My objectives are to review the effects of interventions to improve asthma outcomes on medication adherence and to explore the impacts of text message supported interventions on self-reported medication adherence using a mixed methods approach. Methods: For the systematic review, I conducted a search of databases to identify randomized controlled trials of interventions to improve asthma outcomes using medication. A structured framework was applied to classify interventions based on the emphasis placed on medication adherence. Furthermore, I conducted two convergent mixed methods studies integrating qualitative findings with medication adherence results nested within two studies to improve asthma outcomes. Results: 61 RCTs testing interventions to improve asthma outcomes using medication were identified with variable degree of emphasis placed on medication adherence. The systematic review showed that medication adherence can be effectively promoted if it is seen as objective by researchers. However, improvements observed in medication adherence could not be translated into better health outcomes. These contradictory findings could reveal limitations of RCTs to show some effects in clinical epidemiology. Self-reported medication adherence changes observed in the two nested mixed methods studies could be elucidated by differences in their settings as showed by the integration with a patient-centered model that emerged from the interviews with participants.To my knowledge, this is the first investigation that integrates a patient-centered model with self-reported medication adherence to expand our understanding of medication taking behaviours and generate recommendations for future interventions to improve medication adherence in asthma. Conclusion: This thesis shows how inconclusive results of RCTs to test interventions to improve asthma outcomes are not sufficient to provide answers for all questions. The integration of patients’ perspectives into the equation could bring some clarity into the problem and generate possible solutions for the complex phenomenon of medication non-adherence in asthma.
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Introduction: The World Health Organization has ambitious goals to eliminate AIDS and TB globally. However, the plan is expensive and financial commitment to achieve this goal is uncertain. Mobile phone-based short message service (SMS) interventions have demonstrated the ability to improve HIV drug therapy adherence. My objective was to evaluate the cost-effectiveness of SMS-based adherence interventions in three settings, which have unique epidemics and health systems, yet struggle with similar adherence barriers. In this thesis, I also consider the value of conducting a cost-effectiveness evaluation before, during and after a randomized trial.Method: This thesis has three parts. First, I evaluated the cost-effectiveness of SMS-based HIV drug adherence interventions in Kenya, where the interventions were first developed. Second, I evaluated the burden of non-adherence and cost sensitivity of SMS-based adherence interventions for latent tuberculosis infection (LTBI) drug therapy in British Columbia, where a trial of an SMS-based adherence intervention is underway. Finally, I evaluated 5,836 combinations of 15 HIV interventions, to understand the role of SMS interventions as part of a combination HIV intervention in India where a trial was being planned. Value was expressed in terms of incremental cost-effectiveness ratios (ICERs), which were a function of incremental costs and quality-adjusted life years (QALYs).Results: In Kenya, the SMS interventions were highly cost-effective in the base case (ICER=$1,389/QALY), and remained cost-effective across most sensitivity analyses. In British Columbia, hypothetical interventions that brought the population to full adherence to LTBI drug therapy could cost up to $450 per person per year and remain cost-effective. SMS interventions were least sensitive to cost and would likely be cost-effective if their efficacy were confirmed. Finally, in India, the SMS interventions were cost saving and were part of 4 of the 5 most efficient combination interventions out of 5,836 possible combinations.Conclusion: The SMS interventions are cost-effective or cost saving when compared to the standard of care in multiple settings. Findings support the implementation of SMS interventions as part of HIV and TB care and suggest they could play an essential role in global containment of these diseases.
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Master's Student Supervision
Theses completed in 2010 or later are listed below. Please note that there is a 6-12 month delay to add the latest theses.
Background: In Rwanda, a two-way-SMS-based mHealth intervention, WelTel, was deployed to support isolated COVID-19 patients throughout the pandemic. Patients received daily open-ended check-in-messages throughout their isolation period. To inform further health system digitalization, we sought to quantify WelTel enrollment, assess patients’ usage patterns, and explore how patient characteristics influence such behaviours. We further sought to investigate patient isolation experiences by AI-enhanced-analysis (Natural Language Processing (NLP)) of patient-clinician conversations, to improve similar programs.Methods: WelTel registration and messaging records were extracted, supplemented with Rwanda Ministry of Health data, and quantified. Patient use (≥1 conversation) was computed and compared across sociodemographic groups (sex, age, province, COVID-19-status, pandemic-wave) using logistic regression. Conversation counts and characteristics (language, messages/conversation) were quantified alongside patient communication behaviours (conversations/user, response-times) which were also compared across sociodemographic groups using non-parametric tests. To understand isolation experiences, conversations were sampled (n=2,791/12,119), English-translated (as necessary), topic-labelled, language-restored, and used to train single-topic classifiers (Traditional-ML/Transformer architectures). Best-performing models meeting a F1≥0.7 cutoff were applied to unlabeled conversations. Topic prevalence and sociodemographic differences were assessed in human-labelled, and human-and-machine- labelled corpora using logistic regression.Results: Rwanda registered 33,081 individuals in WelTel (March 2020-March 2022). Of those, 18% (n=6,021) used WelTel, with variation by sex, COVID-19-status, province, and pandemic-wave (p
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Introduction: Unplanned hospital readmissions create stress for patients and their families while placing individuals at risk for negative outcomes and increasing healthcare system costs. Development of effective interventions to reduce readmissions involves timely discharge planning, transitional care, and stakeholder uptake. Mobile health (mHealth) and machine learning technology may help improve coordination of care, identify the underlying reasons for complications, and potentially reduce readmissions.Methods: To determine whether mHealth can help streamline and improve transitional care after discharge from the hospital, we will utilize a two-way text messaging virtual care platform to be piloted at the medical wards in the Vancouver General Hospital (VGH) Clinical Teaching Unit (CTU). Prior to launching the program, we conducted a survey of patients admitted to the CTU to determine mobile phone access, usage, and preferences to better understand the population we wish to serve. Using this information, we designed an mHealth intervention protocol that is patient-centered and collaborative.Results: We found that a two-way text messaging mHealth platform would likely be well-placed to facilitate better transitional care and to understand the underlying reasons for readmissions. Our survey results indicated that 86% of participants had access to a mobile phone, 63% of whom owned their own device and 23% of whom had access via a proxy (e.g., family or caregiver). These findings indicate that most patients can participate in mHealth interventions that rely on mobile phones and that engaging a proxy may further expand inclusivity. Lastly, we conducted training sessions and consulted with hospital staff to ensure the study protocol meets end-user needs and preferences. Using these findings, we developed a framework that utilizes natural language processing (NLP) and machine learning to analyze patient text message conversations with their health care provider (HCP).Conclusion: Our findings suggest that mHealth virtual care platforms are feasible and accessible in a hospital setting, which may help in reducing the burden of hospital readmission on patients, their families, and the health care system.
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News Releases
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UBC experts on monkeypox (02 Aug 2022)
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UBC experts on monkeypox (20 May 2022)
Publications
- “How are you?” Perspectives From Patients and Health Care Providers of Text Messaging to Support Rheumatoid Arthritis Care: A Thematic Analysis (2024)
ACR Open Rheumatology, 6 (5), 276-286 - Alignment and specifics of Brazilian health agencies in relation to the international premises for the implementation of digital health in primary health care: a rhetorical analysis (2024)
Frontiers in Sociology, 9 - Kukaa Salama (Staying Safe): a pre-post trial of an interactive informational mobile health intervention for increasing COVID-19 prevention practices with urban refugee youth in Uganda (2024)
International Health, 16 (1), 107-116 - The use, adherence, and evaluation of interactive text-messaging among women admitted to prevention of mother-to-child transmission of HIV care in Kenya (WelTel PMTCT) (2024)
BMC Pregnancy and Childbirth, 24 (1) - Exploring Primary Healthcare Experiences and Interest in Mobile Technology Engagement Amongst an Urban Population Experiencing Barriers to Care (2023)
Qualitative Health Research, 33 (8-9), 765-777 - Findings from the Tushirikiane mobile health (mHealth) HIV self-testing pragmatic trial with refugee adolescents and youth living in informal settlements in Kampala, Uganda (2023)
Journal of the International AIDS Society, 26 (10) - Implementation and impact of the global access principles at the University of British Columbia: current successes and future challenges (2023)
Frontiers in Pharmacology, 14 - SMS-based digital health intervention in Rwanda's home-based care program for remote management of COVID-19 cases and contacts: A qualitative study of sustainability and scalability (2023)
Frontiers in Digital Health, 4 - The effect of an interactive weekly text-messaging intervention on retention in prevention of mother-to-child transmission of HIV care: a randomised controlled trial (WelTel PMTCT) (2023)
Scientific Reports, 13 (1) - A text messaging intervention and quality of life in adolescents with solid organ transplants (2022)
Pediatric Transplantation, 26 (3) - Digital mHealth and Virtual Care Use During COVID-19 in 4 Countries: Rapid Landscape Review (2022)
JMIR Formative Research, 6 (11) - Mobile Health–Supported Virtual Reality and Group Problem Management Plus: Protocol for a Cluster Randomized Trial Among Urban Refugee and Displaced Youth in Kampala, Uganda (Tushirikiane4MH, Supporting Each Other for Mental Health) (2022)
JMIR Research Protocols, 11 (12) - Mobile phone access and preferences among medical inpatients at an urban Canadian hospital for post-discharge planning: A pre-COVID-19 cross-sectional survey (2022)
Frontiers in Digital Health, 4 - ConVIScope: Visual Analytics for Exploring Patient Conversations (2021)
Proceedings - 2021 IEEE Visualization Conference - Short Papers, VIS 2021, 151-155 - Effect of a phone reminder system on patient-centered tuberculosis treatment adherence among adults in northwest ethiopia: A randomised controlled trial (2021)
BMJ Health and Care Informatics, 28 (1) - Evaluation of the implementation process of the mobile health platform ‘WelTel’ in six sites in East Africa and Canada using the modified consolidated framework for implementation research (mCFIR) (2021)
BMC Medical Informatics and Decision Making, 21 (1) - Kukaa Salama (Staying Safe): Study protocol for a pre/post-trial of an interactive mHealth intervention for increasing COVID-19 prevention practices with urban refugee youth in Kampala, Uganda (2021)
BMJ Open, 11 (11) - Mobile health–Supported HIV self-testing strategy among urban refugee and displaced youth in Kampala, Uganda: Protocol for a cluster randomized trial (Tushirikiane, Supporting Each Other) (2021)
JMIR Research Protocols, 10 (2) - The effect of weekly interactive text-messaging on early infant HIV testing in Kenya: a randomised controlled trial (WelTel PMTCT) (2021)
Scientific Reports, 11 (1) - An overview of platform trials with a checklist for clinical readers (2020)
Journal of Clinical Epidemiology, 125, 1-8 - Does phone messaging improves tuberculosis treatment success? A systematic review and meta-analysis (2020)
BMC Infectious Diseases, 20 (1) - Interventions to improve birth outcomes of pregnant women living in low- and middle-income countries: A systematic review and network meta-analysis (2020)
Gates Open Research, 3 - Mobile health technology for enhancing the COVID-19 response in Africa: A potential game changer? (2020)
American Journal of Tropical Medicine and Hygiene, 103 (1), 3-5 - The cedar project - Mobile phone use and acceptability of mobile health among young indigenous people who have used drugs in British Columbia, Canada: Mixed methods exploratory study (2020)
JMIR mHealth and uHealth, 8 (7) - Using Text Messaging to Communicate with Adolescent Heart Transplant Patients (2020)
The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation, 39 (4), S460-S461 - A pilot randomized controlled trial on the impact of text messaging check-ins and a web-based asthma action plan versus a written action plan on asthma exacerbations (2019)
Journal of Asthma, 56 (8), 897-909 - Combined effect of pill refilling and self-medication reminder system on patients' adherence to tuberculosis treatment during continuation phase in Northwest Ethiopia: A study protocol for randomised controlled trial (2019)
BMJ Health and Care Informatics, 26 (1) - Effectiveness of text messaging interventions on prevention, detection, treatment, and knowledge outcomes for sexually transmitted infections (STIs)/HIV: A systematic review and meta-analysis (2019)
Systematic Reviews, 8 (1) - Experiences of the HIV Cascade of Care Among Indigenous Peoples: A Systematic Review (2019)
AIDS and Behavior, 23 (4), 984-1003 - Interventions to improve linear growth during complementary feeding period for children aged 6-24 months living in low- and middle-income countries: A systematic review and network meta-analysis (2019)
Gates Open Research, 3 - Mobile phone short message service for adherence support and care of patients with tuberculosis infection: Evidence and opportunity (2019)
Journal of Clinical Tuberculosis and Other Mycobacterial Diseases, 16 - Mobile phone-enabled adherence in HIV/AIDS (2019)
The Lancet Digital Health, 1 (1), e4-e5 - Randomized Controlled Trial of a Mobile Health Intervention to Promote Retention and Adherence to Preexposure Prophylaxis among Young People at Risk for Human Immunodeficiency Virus: The EPIC Study (2019)
Clinical Infectious Diseases, 68 (12), 2010-2017 - Systematic review of basket trials, umbrella trials, and platform trials: A landscape analysis of master protocols (2019)
Trials, 20 (1) - A case of mumps-associated myocarditis (2018)
JAMMI, 3 (3), 149-154 - A Mobile Health Strategy to Support Adherence to Antiretroviral Preexposure Prophylaxis (2018)
AIDS Patient Care and STDs, 32 (3), 104-111 - Digital health to support early infant diagnosis of HIV (2018)
The Lancet HIV, 5 (12), e673-e674 - Effect of an interactive text-messaging service on patient retention during the first year of HIV care in Kenya (WelTel Retain): an open-label, randomised parallel-group study (2018)
The Lancet Public Health, 3 (3), e143-e152 - Gender differences in health-related quality of life at the time of a positive HIV test–a cross-sectional study in a resource-poor, high prevalence setting in Nairobi, Kenya (2018)
AIDS Care - Psychological and Socio-Medical Aspects of AIDS/HIV, 30 (4), 493-499 - Health care provider utilization and cost of an mhealth intervention in vulnerable people living with HIV in vancouver, Canada: Prospective study (2018)
Journal of Medical Internet Research, 20 (7) - Health care provider utilization and cost of an mhealth intervention in vulnerable people living with HIV in vancouver, Canada: Prospective study (2018)
Journal of Medical Internet Research, 20 (7) - Health care provider utilization and cost of an mHealth intervention in vulnerable people living with HIV in Vancouver, Canada: Prospective study (2018)
JMIR mHealth and uHealth, 6 (7) - Identifying barriers and facilitators of 13 mHealth projects in North America and Africa: Protocol for a 5-year implementation science study (2018)
JMIR Research Protocols, 7 (7) - Identifying barriers and facilitators of 13 mhealth projects in North America and Africa: Protocol for a 5-year implementation science study (2018)
Journal of Medical Internet Research, 20 (7) - Identifying barriers and facilitators of 13 mhealth projects in North America and Africa: Protocol for a 5-year implementation science study (2018)
Journal of Medical Internet Research, 20 (7) - Interactive two-way mHealth interventions for improving medication adherence: An evaluation using the behaviour change wheel framework (2018)
Journal of Medical Internet Research, 20 (4) - Interactive two-way mHealth interventions for improving medication adherence: An evaluation using the behaviour change wheel framework (2018)
Journal of Medical Internet Research, 20 (4) - Interactive two-way mhealth interventions for improving medication adherence: An evaluation using the behaviour change wheel framework (2018)
JMIR mHealth and uHealth, 6 (4) - Mobile phone access and willingness among mothers to receive a text-based mhealth intervention to improve prenatal care in northwest ethiopia: Cross-sectional study (2018)
JMIR Pediatrics and Parenting, 1 (2) - Retention in clinic versus retention in care during the first year of HIV care in Nairobi, Kenya: a prospective cohort study (2018)
Journal of the International AIDS Society, 21 (11) - The effect of text messaging on latent tuberculosis treatment adherence: A randomised controlled trial (2018)
European Respiratory Journal, 51 (2) - The impact of digital health technologies on tuberculosis treatment: A systematic review (2018)
European Respiratory Journal, 51 (1) - Assessing mobile phone access and perceptions for texting-based mhealth interventions among expectant mothers and child caregivers in remote regions of Northern Kenya: A survey-based descriptive study (2017)
JMIR Public Health and Surveillance, 3 (1) - Burden of non-adherence to latent tuberculosis infection drug therapy and the potential cost-effectiveness of adherence interventions in Canada: A simulation study (2017)
BMJ Open, 7 (9) - Digital health to end tuberculosis in the Sustainable Development Goals era: Achievements, evidence and future perspectives (2017)
European Respiratory Journal, 50 (5) - Economic evaluation of mobile phone text message interventions to improve adherence to HIV therapy in Kenya (2017)
Medicine (United States), 96 (7) - Improving antiretroviral therapy adherence in resource-limited settings at scale: A discussion of interventions and recommendations (2017)
Journal of the International AIDS Society, 20 (1) - Improving linkage to HIV care at low-threshold STI/HIV testing sites: An evaluation of the immediate staging pilot project in Vancouver, British Columbia (2017)
Canadian Journal of Public Health, 108 (1), e79-e84 - Interactive weekly mobile phone text messaging plus motivational interviewing in promotion of breastfeeding among women living with HIV in South Africa: Study protocol for a randomized controlled trial (2017)
Trials, 18 (1) - Landscape review of current HIV 'kick and kill' cure research - some kicking, not enough killing (2017)
BMC Infectious Diseases, 17 (1) - Mobile text messaging to improve medication adherence and viral load in a vulnerable canadian population living with human immunodeficiency virus: A repeated measures study (2017)
Journal of Medical Internet Research, 19 (6) - Operationalizing mHealth to improve patient care: A qualitative implementation science evaluation of the WelTel texting intervention in Canada and Kenya (2017)
Globalization and Health, 13 (1) - Participation in a mobile health intervention trial to improve retention in HIV care: does gender matter? (2017)
Journal of Telemedicine and Telecare, 23 (2), 314-320 - The validity of the SF-12 and SF-6D instruments in people living with HIV/AIDS in Kenya (2017)
Health and Quality of Life Outcomes, 15 (1) - Acceptability and feasibility of mHealth and community-based directly observed antiretroviral therapy to prevent mother-to-child HIV transmission in South African pregnant women under Option B+: An exploratory study (2016)
Patient Preference and Adherence, 10, 683-690 - Advanced HIV disease at presentation to care in Nairobi, Kenya: Late diagnosis or delayed linkage to care?-a cross-sectional study (2016)
BMC Infectious Diseases, 16 (1) - The Cedar Project WelTel mHealth intervention for HIV prevention in young Indigenous people who use illicit drugs: Study protocol for a randomized controlled trial (2016)
Trials, 17 (1) - The effect of an interactive weekly mobile phone messaging on retention in prevention of mother to child transmission (PMTCT) of HIV program: Study protocol for a randomized controlled trial (WELTEL PMTCT) (2016)
BMC Medical Informatics and Decision Making, 16 (1) - The PAediatric Risk Assessment (PARA) Mobile app to reduce postdischarge child mortality: Design, usability, and feasibility for health care workers in Uganda (2016)
JMIR mHealth and uHealth, 4 (1) - A cross-sectional survey exploring attitudes towards provincial electronic health record implementation among clients attending the provincial sexually transmitted infections clinic in British Columbia (2015)
Sexually Transmitted Infections, 91 (1), 44-48 - Connecting patient care to global health trends by health app analytics (2015)
Public Health Action, 5 (4), 203 - Feasibility and acceptability of mobile phone short message service as a support for patients receiving antiretroviral therapy in rural Uganda: A cross-sectional study (2015)
Journal of the International AIDS Society, 18 (1) - Gonorrhea treatment failures with oral and injectable expanded spectrum cephalosporin monotherapy vs dual therapy at 4 canadian sexually transmitted infection clinics, 2010-2013 (2015)
Sexually Transmitted Diseases, 42 (6), 331-336 - Health Care Providers’ Perspectives on a Weekly Text-Messaging Intervention to Engage HIV-Positive Persons in Care (WelTel BC1) (2015)
AIDS and Behavior, 19 (10), 1875-1887 - Mobile health applications for HIV prevention and care in Africa (2015)
Current Opinion in HIV and AIDS, 10 (6), 464-471 - Recent Evidence for Emerging Digital Technologies to Support Global HIV Engagement in Care (2015)
Current HIV/AIDS Reports, 12 (4), 451-461 - Self-collected versus clinician-collected sampling for chlamydia and gonorrhea screening: A systemic review and meta-analysis (2015)
PLoS ONE, 10 (7) - Sexually transmitted infection trends among gay or bisexual men from a clinic-based sentinel surveillance system in British Columbia, Canada (2015)
Sexually Transmitted Diseases, 42 (3), 153-159 - A Qualitative Study Investigating the Use of a Mobile Phone Short Message Service Designed to Improve HIV Adherence and Retention in Care in Canada (WelTel BC1) (2014)
Journal of the Association of Nurses in AIDS Care, 25 (6), 614-625 - Acting locally: Innate mucosal immunity in resistance to HIV-1 infection in Kenyan commercial sex workers (2014)
British Dental Journal, 217 (2), 268-279 - Acting locally: Innate mucosal immunity in resistance to HIV-1 infection in Kenyan commercial sex workers (2014)
Mucosal Immunology, 7 (2), 268-279 - Empowering pharmacists in asthma management through interactive SMS (EmPhAsIS): Study protocol for a randomized controlled trial (2014)
Trials, 15 (1) - Interventions to promote adherence to antiretroviral therapy in Africa: A network meta-analysis (2014)
The Lancet HIV, 1 (3), e104-e111 - Mobile health for early retention in HIV care: A qualitative study in Kenya (WelTel Retain) (2014)
African Journal of AIDS Research, 13 (4), 331-338 - Mobile health: An update on BC projects that use WelTel to enhance patient care (2014)
British Columbia Medical Journal, 56 (2) - Prevention of mother-to-child transmission of HIV in Kenya: Challenges to implementation (2014)
BMC Health Services Research, 14 (SUPPL.1) - Short message service (SMS) interventions for the prevention and treatment of sexually transmitted infections: A systematic review protocol (2014)
Systematic Reviews, 3 (1) - Test Uptake and Case Detection of Syphilis, HIV, and Hepatitis C Among Women Undergoing Prenatal Screening in British Columbia, 2007 to 2011 (2014)
Journal of Obstetrics and Gynaecology Canada, 36 (6), 482-490 - The effect of weekly text-message communication on treatment completion among patients with latent tuberculosis infection: Study protocol for a randomised controlled trial (WelTel LTBI) (2014)
BMJ Open, 4 (4) - Time since last negative HIV test among men who have sex with men and people who use injection drugs in British Columbia, 2006-2011 (2014)
Canadian Journal of Public Health, 105 (1) - A pilot study of the feasibility of a vaginal washing cessation intervention among Kenyan female sex workers (2013)
Sexually Transmitted Infections, 89 (3), 217-222 - Ask, don't tell - Mobile phones to improve HIV care (2013)
New England Journal of Medicine, 369 (19), 1867-1868 - Cephalosporin and azithromycin susceptibility in neisseria gonorrhoeae isolates by site of infection, British Columbia, 2006 to 2011 (2013)
Sexually Transmitted Diseases, 40 (1), 46-51 - Direct-acting antiviral therapies for hepatitis c genotype 1 infection: A multiple treatment comparison meta-analysis (2013)
QJM: An International Journal of Medicine, 106 (2), 153-163 - Factors associated with intention to use internet-based testing for sexually transmitted infections among men who have sex with men (2013)
Journal of Medical Internet Research, 15 (11) - How complexity science can inform scale-up and spread in health care: Understanding the role of self-organization in variation across local contexts (2013)
Social Science and Medicine, 93, 194-202 - Male sex and the risk of mortality among individuals enrolled in antiretroviral therapy programs in Africa: A systematic review and meta-analysis (2013)
AIDS, 27 (3), 417-425 - Mobile phone text messages for improving adherence to antiretroviral therapy (ART): A protocol for an individual patient data meta-analysis of randomised trials (2013)
BMJ Open, 3 (5) - Mobile phone text messages for improving adherence to antiretroviral therapy (ART): An individual patient data meta-analysis of randomised trials (2013)
BMJ Open, 3 (12) - Self-collected versus clinician-collected sampling for sexually transmitted infections: a systematic review and meta-analysis protocol. (2013)
Systematic reviews, 2, 93 - Syphilis and neurosyphilis increase to historic levels in BC (2013)
British Columbia Medical Journal, 55 (4), 204-205 - The effect of weekly short message service communication on patient retention in care in the first year after HIV diagnosis: Study protocol for a randomised controlled trial (WelTel Retain) (2013)
BMJ Open, 3 (6) - Adherence to antiretroviral therapy: Supervision or support? (2012)
The Lancet Infectious Diseases, 12 (2), 97-98 - In-Depth Analysis of Patient-Clinician Cell Phone Communication during the WelTel Kenya1 Antiretroviral Adherence Trial (2012)
PLoS ONE, 7 (9) - Low-dose aspirin and cancer mortality: A meta-analysis of randomized trials (2012)
American Journal of Medicine, 125 (6), 560-567 - M-health for health behaviour change in resource-limited settings: Applications to HIV care and beyond (2012)
Bulletin of the World Health Organization, 90 (5), 390-392 - New guidelines for management of N. gonorrhoeae in the context of evolving susceptibility patterns (2012)
British Columbia Medical Journal, 54 (2), 67 - Promoting long term adherence to antiretroviral treatment (2012)
BMJ (Online), 344 (7865) - The Cameroon Mobile Phone SMS (CAMPS) Trial: A Randomized Trial of Text Messaging versus Usual Care for Adherence to Antiretroviral Therapy (2012)
PLoS ONE, 7 (12) - A workshop report on HIV mhealth synergy and strategy meeting to review emerging evidence-based mhealth interventions and develop a framework for scale-up of these interventions (2011)
Pan African Medical Journal, 10 - M-health: Connecting patients to improve population and public health (2011)
British Columbia Medical Journal, 53 (5), 218-219 - The cameroon mobile phone sms (CAMPS) trial: A protocol for a randomized controlled trial of mobile phone text messaging versus usual care for improving adherence to highly active anti-retroviral therapy (2011)
Trials, 12 - Effect of baseline HIV disease parameters on CD4+ T cell recovery after antiretroviral therapy initiation in Kenyan Women (2010)
PLoS ONE, 5 (7) - Effects of a mobile phone short message service on antiretroviral treatment adherence in Kenya (WelTel Kenya1): A randomised trial (2010)
The Lancet, 376 (9755), 1838-1845 - HIV status in discordant couples in sub-Saharan Africa: a systematic review and meta-analysis (2010)
The Lancet Infectious Diseases, 10 (11), 770-777 - HIV-1 RNA dysregulates the natural TLR response to subclinical endotoxemia in Kenyan female sex-workers (2009)
PLoS ONE, 4 (5) - Sex, microbial translocation, and the African HIV epidemic (2009)
Proceedings of the National Academy of Sciences of the United States of America, 106 (34) - The HAART cell phone adherence trial (WelTel Kenya1): A randomized controlled trial protocol (2009)
Trials, 10, 87 - Mobile phones: exceptional tools for HIV/AIDS, health, and crisis management (2008)
The Lancet Infectious Diseases, 8 (12), 738-739 - Toll-like receptor expression and responsiveness are increased in viraemic HIV-1 infection (2008)
AIDS, 22 (6), 685-694 - Cell phones: Tightening the communication gap in resource-limited antiretroviral programmes? [5] (2006)
AIDS, 20 (17), 2242-2244 - An observational study of sun and heat protection during Canada Day outdoor celebrations, 2003 (2005)
Chronic Diseases in Canada, 26 (2-3), 59-64 - Improved outcome of human immunodeficiency virus-associated plasmablastic lymphoma of the oral cavity in the era of highly active antiretroviral therapy: A report of two cases (2004)
Leukemia and Lymphoma, 45 (9), 1881-1885 - Use of, Effectiveness of, and Attitudes Regarding Influenza Vaccine among House Staff (2003)
Infection Control and Hospital Epidemiology, 24 (11), 839-844
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