Philip A. Chan

ORCID: 0000-0003-0964-5895
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About
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Research Areas
  • HIV/AIDS Research and Interventions
  • HIV, Drug Use, Sexual Risk
  • Adolescent Sexual and Reproductive Health
  • Sex work and related issues
  • HIV Research and Treatment
  • Reproductive tract infections research
  • SARS-CoV-2 and COVID-19 Research
  • LGBTQ Health, Identity, and Policy
  • Syphilis Diagnosis and Treatment
  • COVID-19 epidemiological studies
  • COVID-19 Clinical Research Studies
  • Food Security and Health in Diverse Populations
  • Vaccine Coverage and Hesitancy
  • HIV/AIDS drug development and treatment
  • Sexuality, Behavior, and Technology
  • COVID-19 and healthcare impacts
  • Homelessness and Social Issues
  • SARS-CoV-2 detection and testing
  • COVID-19 and Mental Health
  • Primary Care and Health Outcomes
  • Influenza Virus Research Studies
  • Long-Term Effects of COVID-19
  • HIV/AIDS oral health manifestations
  • COVID-19 Impact on Reproduction
  • Data-Driven Disease Surveillance

Brown University
2016-2025

Rhode Island Department of Health
2016-2025

Public Health Institute
2023-2025

Providence College
2016-2025

Christian Health Association of Nigeria
2021-2025

Marshall Medical Center
2025

John Brown University
2017-2024

Public Health Department
2024

Rogers (United States)
2021-2024

National Institute on Minority Health and Health Disparities
2024

These guidelines for the treatment of persons who have or are at risk sexually transmitted infections (STIs) were updated by CDC after consultation with professionals knowledgeable in field STIs met Atlanta, Georgia, June 11-14, 2019. The information this report updates 2015 guidelines. discuss 1) recommendations Neisseria gonorrhoeae, Chlamydia trachomatis, and Trichomonas vaginalis; 2) addition metronidazole to recommended regimen pelvic inflammatory disease; 3) alternative options...

10.15585/mmwr.rr7004a1 article EN MMWR Recommendations and Reports 2021-07-22

Objective The aim of this study was to explore the potential association obesity and other chronic diseases with severe outcomes, such as intensive care unit (ICU) admission invasive mechanical ventilation (IMV), in patients hospitalized coronavirus disease 2019 (COVID‐19). Methods This analyzed a retrospective cohort 103 COVID‐19. Demographic data, past medical history, hospital course were collected analyzed. A multivariate logistic regression analysis implemented examine associations....

10.1002/oby.22859 article EN Obesity 2020-04-30

This study reports further evidence as to the determinants of audit fees paid by quoted companies in UK. It outlines a framework based on findings from semi‐structured interviews with partners four large firms and results previous research, tests this means multivariate analysis using 1987 data for sample UK companies. A model explaining 87 per cent variation is constructed. The principal explanatory variables are found be auditee size, return shareholders equity, number subsidiaries, lag...

10.1111/j.1468-5957.1993.tb00292.x article EN Journal of Business Finance &amp Accounting 1993-11-01

Excessive use of the Internet has been associated with attention deficit hyperactivity disorder (ADHD), but relationship between video games and ADHD symptoms in adolescents is unknown. A survey parents (n = 72 adolescents, parents) was performed assessing daily time spent on Internet, television, console games, their association academic social functioning. Subjects were high school students ninth tenth grade. Students administered a modified Young's Addiction Scale (YIAS) asked questions...

10.1186/1744-859x-5-16 article EN cc-by Annals of General Psychiatry 2006-10-24

Pre-exposure prophylaxis (PrEP) is an effective HIV prevention strategy. There little scientific consensus about how to measure PrEP program implementation progress. We draw on several years of experience in implementing programs and propose a continuum care that includes: (1) identifying individuals at highest risk for contracting HIV, (2) increasing awareness among those individuals, (3) enhancing awareness, (4) facilitating access, (5) linking care, (6) prescribing PrEP, (7) initiating...

10.1097/qad.0000000000001385 article EN AIDS 2017-01-04

Introduction Despite the efficacy of pre‐exposure prophylaxis (PrEP) in preventing HIV transmission, few studies have evaluated PrEP use and retention care outcomes real‐world settings outside clinical trials. Methods Data were collected from programmes three mid‐size US cities: Providence, Rhode Island (RI); Jackson, Mississippi (MS); St. Louis, Missouri (MO). We assessed demographic social characteristics patients prescribed documented their insurance copayment experiences. at six months....

10.7448/ias.19.1.20903 article EN cc-by Journal of the International AIDS Society 2016-01-01

Pre-exposure prophylaxis (PrEP) is a biomedical intervention that can reduce rates of HIV transmission when taken once daily by HIV-negative individuals. Little understood about PrEP uptake and retention in care among the populations most heavily impacted epidemic, particularly young men who have sex with (YMSM) Deep South. Therefore, this study explored structural, social, behavioral, clinical factors affect use YMSM Jackson, Mississippi. Thirty MSM were prescribed at an outpatient primary...

10.1371/journal.pone.0172354 article EN cc-by PLoS ONE 2017-02-21

No vaccines and few chemoprophylaxis options exist for the prevention of bacterial sexually transmitted infections (STIs) (specifically syphilis, chlamydia, gonorrhea). These have increased in United States disproportionately affect gay, bisexual, other men who sex with (MSM) transgender women (TGW). In three large randomized controlled trials, 200 mg doxycycline taken within 72 hours after has been shown to reduce syphilis chlamydia by >70% gonococcal approximately 50%. This report outlines...

10.15585/mmwr.rr7302a1 article EN MMWR Recommendations and Reports 2024-06-04

Pre-exposure prophylaxis (PrEP) can reduce U.S. HIV incidence. We assessed insurance coverage and its association with PrEP utilization. reviewed patient data at three clinics (Jackson, Mississippi; St. Louis, Missouri; Providence, Rhode Island) from 2014–2015. The outcome, utilization, was defined as use months. Multivariable logistic regression performed to determine the between Of 201 patients (Jackson: 34%; Louis: 28%; Providence: 28%), 91% were male, 51% White, median age 29 years, 21%...

10.1371/journal.pone.0178737 article EN cc-by PLoS ONE 2017-05-30

Sexual minority adolescents face mental health disparities relative to heterosexual adolescents. We evaluated temporal changes in US adolescent reported sexual orientation and suicide attempts by orientation. used Youth Risk Behavioral Surveillance data from 6 states that collected on identity 4 sex of contacts continuously between 2009 2017. estimated odds ratios using logistic regression models evaluate identity, consensual contacts, over time calculated marginal effects (MEs). The...

10.1542/peds.2019-1658 article EN PEDIATRICS 2020-02-10

COVID-19 presents a local and global challenge.At the time of writing, prevalence estimates for state Rhode Island (April 24, 2020) are 6256 confirmed cases 189 deaths [1]; United States, 828,441 46,395 [2]; globally, 2,626,321 181,938 [3].Individuals at risk or living with HIV nevertheless need ongoing prevention care services may be higher acquiring COVID-19.Clinic closures attributed to crisis place them greater poor outcomes [4, 5].

10.1007/s10461-020-02895-1 article EN other-oa AIDS and Behavior 2020-04-29

Oral HIV pre-exposure prophylaxis (PrEP) is highly effective for preventing HIV. Several different developments in the US either threaten to increase or promise decrease PrEP out-of-pocket costs and access coming years. In a sample of 58,529 people with new insurer-approved prescription, we estimated risk-adjusted percentages patients who abandoned (did not fill) their initial prescription across six cost categories. We then simulated percentage would abandon under hypothetical changes...

10.1377/hlthaff.2023.00808 article EN Health Affairs 2024-01-01

The human genome contains frequent single-basepair variants that may or not cause genetic disease. To characterize benign vs. pathogenic missense variants, numerous computational algorithms have been developed based on comparative sequence and/or protein structure analysis. We compared methods use evolutionary conservation alone, amino acid (AA) change and a combination of AA in predicting the consequences 254 CDKN2A (n = 92), MLH1 28), MSH2 14), MECP2 30), tyrosinase (TYR) 90) genes....

10.1002/humu.20492 article EN Human Mutation 2007-03-16

The monitoring of patients with human immunodeficiency virus (HIV) infection who are treated antiretroviral medications in resource-limited settings is typically performed by use clinical and immunological criteria. early identification first-line treatment failure critical to prevent morbidity, mortality, drug resistance. Misclassification may result premature switching second-line therapy.Adult western Kenya had their viral loads (VLs) determined if they adhered therapy for >6 months were...

10.1086/600396 article EN Clinical Infectious Diseases 2009-07-01

Better understand the incidence, risk factors, and outcomes of peripheral venous catheter (PVC)-related Staphylococcus aureus bacteremia.Retrospective study PVC-related S. bacteremias in adult patients from July 2005 through March 2008. A point-prevalence survey was performed January 9, 2008, on inpatients to determine PVC utilization; with a served as cohort assess factors for bacteremia.Tertiary care teaching hospital.Twenty-four (18 definite 6 probable) were identified (estimated...

10.1086/660099 article EN Infection Control and Hospital Epidemiology 2011-05-10

Preexposure prophylaxis (PrEP) is efficacious in preventing human immunodeficiency virus (HIV) among men who have sex with (MSM). We assessed PrEP uptake MSM presenting for services at a sexually transmitted diseases (STD) clinic.Men to the Rhode Island STD Clinic between October 2013 and November 2014 were educated about, offered, PrEP. categorized engagement using an implementation cascade describe gaps which described who: (1) about PrEP, (2) indicated interest, (3) successfully received...

10.1097/olq.0000000000000514 article EN Sexually Transmitted Diseases 2016-10-12

Background The HIV epidemic in the United States (US) disproportionately affects gay, bisexual, and other men who have sex with (MSM). Pre-exposure prophylaxis (PrEP) using co-formulated tenofovir disoproxil fumarate (TDF) emtricitabine (FTC) has demonstrated high efficacy reducing incidence among MSM. However, low adherence was reported major trials may present a substantial barrier to successful PrEP implementation. Rates of "real-world" clinical settings US remain largely unknown. Methods...

10.1371/journal.pone.0157742 article EN cc-by PLoS ONE 2016-06-22

Coronavirus disease 2019 is responsible for a global pandemic and has impacted health care accessibility delivery. Clinic data were reviewed an STI clinic from September to May 2020. A significant decrease in rates of visits treatments during the coronavirus was observed.

10.1097/olq.0000000000001306 article EN Sexually Transmitted Diseases 2020-11-12

Abstract Introduction Retention in HIV pre‐exposure prophylaxis (PrEP) care real‐world settings, outside of controlled trials or demonstration projects, remains poorly understood. Methods We evaluated retention PrEP outcomes among men who have sex with (MSM) and transgender women prescribed through March 2017 at three clinical sites the United States (US): Jackson, Mississippi; Providence, Rhode Island; St. Louis, Missouri. determined rates by attendance visits every months, per US Centers...

10.1002/jia2.25385 article EN cc-by Journal of the International AIDS Society 2019-08-01

Non-emergent clinical services were limited or suspended during the early stages of coronavirus disease 2019 (COVID-19) pandemic in United States (U.S.). This could adversely impact epidemics public health importance, such as HIV, and access to testing, which is a cornerstone prevention efforts. In this observational study, we collected HIV testing positivity rate data from four geographically diverse U.S. healthcare systems New Orleans, Louisiana; Minneapolis, Minnesota; Providence, Rhode...

10.1016/j.lana.2021.100159 article EN cc-by-nc-nd The Lancet Regional Health - Americas 2021-12-23

Pre-exposure prophylaxis (PrEP) has the potential to reduce transmission of HIV among Black cisgender women in Southern United States (U.S.); however, national data suggests that PrEP initiation is lowest South and compared other U.S. regions white women. This study applied intersectionality multilevel resilience frameworks assess how socio-structural clinical contexts shaped persistence Mississippi. Semi-structured interviews were conducted with eight Jackson, sample was purposively...

10.1186/s12879-021-06786-1 article EN cc-by BMC Infectious Diseases 2021-10-26
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