Ryan Cook

2.5k citations

101 papers · 1.4k indexed · h-index 23

Infectious Diseases top 2%
- HIV/AIDS Research and Interventions 42
General Health Professions top 2%
- Adolescent Sexual and Reproductive Health 27
Biological Psychiatry top 10%
Virology top 10%
Public Health, Environmental and Occupational Health top 5%
- Opioid Use Disorder Treatment 20
Epidemiology
- HIV, Drug Use, Sexual Risk 24
- Substance Abuse Treatment and Outcomes 11
Pediatrics, Perinatology and Child Health
- Global Maternal and Child Health 11
- Prenatal Substance Exposure Effects 8
Surgery
- Genital Health and Disease 8

Co-authors: Stephen M. Weiss Deborah L. Jones Karl Peltzer Ndashi Chitalu P. Todd Korthuis Steven Shoptaw Violeta J. Rodriguez Drenna Waldrop‐Valverde
Cited by: Infectious Diseases General Health Professions Biological Psychiatry
Journals: AIDS and Behavior (9 papers)Journal of the International Association of Providers of AIDS Care (JIAPAC) (6 papers)Drug and Alcohol Dependence (6 papers)
Partner nations: United States Zambia South Africa

In The Last Decade

Ryan Cook

94 papers receiving 1.4k citations

Peers

Countries citing papers authored by Ryan Cook

Since Specialization

Citations

This map shows the geographic impact of Ryan Cook's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ryan Cook with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryan Cook more than expected).

Fields of papers citing papers by Ryan Cook

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryan Cook. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ryan Cook. The network helps show where Ryan Cook may publish in the future.

Co-authorship network

The 25 scholars most cited alongside Ryan Cook, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Ryan Cook Line = papers co-authored together Ryan Cook links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Can a participant‐referred ‘study buddy’ increase retention of rural people who use drugs in research? A multi‐site, randomized trial Addiction ·April M. Young,D. BUSH,Miriam Elman,Atsushi Hiro,Ryan Cook,Han Yang Chen,Affan Shah,Edward Augustus Freeman,Jodi Lapidus,P. Todd Korthuis	2025	0
2	Preferences for clinical trial participation among people who use drugs in rural Oregon and Appalachian Ohio Drug and Alcohol Dependence ·Kathryn E. Lancaster,Caroline Koudelka,Miriam Elman,Affan Shah,Atsushi Hiro,Han Yang Chen,Ryan Cook,P. Todd Korthuis,April M. Young	2025	0
3	Peer-Assisted Telemedicine for Hepatitis C in People Who Use Drugs: A Randomized Controlled Trial Clinical Infectious Diseases ·Igone Perea Arandia,Ryan Cook,Gillian Leichtling,Artur Drobniak,A. F. Tembe,Carly Gates-Vickery DeLeu,Hunter Spencer,Raiane Valle da Costa,Chris Fox,Ann Thomas,Judith Leahy,Ning Xu,P. Todd Korthuis	2024	8
4	Associations between stimulant use and return to illicit opioid use following initiation onto medication for opioid use disorder Addiction ·В.И. Асаевич,P. Todd Korthuis,Judith I. Tsui,Sean X. Luo,Brian Chan,Ryan Cook	2023	5
5	A gender‐based secondary analysis of the ADAPT‐2 combination naltrexone and bupropion treatment for methamphetamine use disorder trial Addiction ·Ximena A. Levander,Thomas Carmody,Ryan Cook,Jennifer Sharpe Potter,Madhukar H. Trivedi,P. Todd Korthuis,Steven Shoptaw	2023	1
6	Estimating the impact of stimulant use on initiation of buprenorphine and extended-release naltrexone in two clinical trials and real-world populations Addiction Science & Clinical Practice ·Ryan Cook,В.И. Асаевич,Onyebuchi A. Arah,Keith Humphreys,Kara E. Rudolph,Sean X. Luo,Judith I. Tsui,Ximena A. Levander,P. Todd Korthuis	2023	10
7	Treatment Initiation, Substance Use Trajectories, and the Social Determinants of Health in Persons Living With HIV Seeking Medication for Opioid Use Disorder Substance Abuse ·Ryan Cook,Wolfgang Mersmann,Kim Hoffman,Elizabeth Needham Waddell,Gérald Crépeau,P. Todd Korthuis,Pamela Vergara‐Rodriguez	2023	0
8	Assessment of the Neurological Activation in Law Enforcement under High Threat Situations: A Fuzzy Logic Approach World Journal of Neuroscience ·Daniel Fonseca,Shiyi Luo,C. Kaldiev,Ryan Cook,Antoinette Nelson-Rodriguez	2023	1
9	‘Being able to work has kept our life fairly constant:’ reconciling social practice models to assess the impact of (infra)structural inequities on household wellbeing during the COVID-19 pandemic SHILAP Revista de lepidopterología ·Sonya Ahamed,Chelsea Schelly,Kristin Floress,Jacques Auxiette,Nirumal Rakkesh Darling Chellathai,Cara L. Cuite,Charles Wallace,Ryan Cook,Fr. Ign. Fournier,Rachael Shwom,David I. Watkins	2023	1
10	Peer-based Retention Of people who Use Drugs in Rural Research (PROUD-R²): a multisite, randomised, 12-month trial to compare efficacy of standard versus peer-based approaches to retain rural people who use drugs in research BMJ Open ·April M. Young,Kathryn E. Lancaster,Atsushi Hiro,Miriam Elman,Ryan Cook,Gillian Leichtling,Edward Augustus Freeman,Han Yang Chen,L. Collete,Neda Ahmad,Geoffrey Z. Wozniak,Sunil Kumar Koppala Narayanan,M. Vijey Aanandini,Marianne D. Gideon,Ірина Олегівна Мартінкус,Franco Meléndez,Jodi Lapidus,Elizabeth Needham Waddell,P. Todd Korthuis	2022	5
11	Association between treatment setting and outcomes among oregon medicaid patients with opioid use disorder: a retrospective cohort study Addiction Science & Clinical Practice ·Daniel M. Hartung,Sheila Markwardt,Kirbee Johnston,陈健,Robin Baker,Gillian Leichtling,Christi Hildebran,Brian Chan,Ryan Cook,Dennis McCarty,Udi E. Ghitza,P. Todd Korthuis	2022	9
12	Treatment retention, return to use, and recovery support following COVID-19 relaxation of methadone take-home dosing in two rural opioid treatment programs: A mixed methods analysis Journal of Substance Abuse Treatment ·Kim Hoffman,В.И. Асаевич,Ximena A. Levander,Ryan Cook,Javier Ponce Terashima,A. Waton,P. Todd Korthuis,Dennis McCarty	2022	42
13	Associations between fentanyl use and initiation, persistence, and retention on medications for opioid use disorder among people living with uncontrolled HIV disease Drug and Alcohol Dependence ·Ryan Cook,国有財産中央審議会,Caroline King,Paula J. Lum,Hansel Tookes,В.И. Асаевич,Pamela Vergara‐Rodriguez,Allan Rodríguez,Laura Fanucchi,Gregory M. Lucas,Elizabeth Needham Waddell,P. Todd Korthuis	2021	12
14	Simulating the impact of Addiction Consult Services in the context of drug supply contamination, hospitalizations, and drug-related mortality International Journal of Drug Policy ·Caroline King,Ryan Cook,Siti Rodhiyah Alfina,P. Todd Korthuis,Judith Leahy,Zhuoliang Liu,Cynthia D. Morris,Honora Englander	2021	7
15	Alterations to the Gastrointestinal Microbiome Associated with Methamphetamine Use among Young Men who have Sex with Men Scientific Reports ·Ryan Cook,Jennifer A. Fulcher,Nicole H. Tobin,Fan Li,David Lee,Cora L. Woodward,Marjan Javanbakht,Ron Brookmeyer,Steven Shoptaw,Robert Bolan,Grace M. Aldrovandi,Pamina M. Gorbach	2019	41
16	Effects of Substance Use and Sex Practices on the Intestinal Microbiome During HIV-1 Infection The Journal of Infectious Diseases ·Jennifer A. Fulcher,Shehnaz K. Hussain,Ryan Cook,Fan Li,Nicole H. Tobin,Amy Ragsdale,Steven Shoptaw,Pamina M. Gorbach,Grace M. Aldrovandi	2018	41
17	A Bayesian Analysis of Prenatal Maternal Factors Predicting Nonadherence to Infant HIV Medication in South Africa AIDS and Behavior ·Ryan Cook,Karl Peltzer,Stephen M. Weiss,Violeta J. Rodriguez,Deborah L. Jones	2018	6
18	Risk Reduction Among HIV-Seroconcordant and -Discordant Couples: The Zambia NOW2 Intervention AIDS Patient Care and STDs ·Deborah L. Jones,Deborah A. Kashy,Ndashi Chitalu,Chipepo Kankasa,J Lira,Ryan Cook,Stephen M. Weiss	2014	17
19	Do Perceptions of Competence Mediate The Relationship Between Fundamental Motor Skill Proficiency and Physical Activity Levels of Children in Kindergarten? Journal of Physical Activity and Health ·Jeff R. Crane,M.C. Obaldia-Alaña,Ryan Cook,Viviene A. Temple	2014	64
20	Recent Experience in Maternal and Child Health in East Africa. Journal of Tropical Pediatrics ·Ryan Cook	1966	1

About Ryan Cook

Ryan Cook is a scholar working on Infectious Diseases, General Health Professions, Public Health, Environmental and Occupational Health, Virology and Toxicology, having authored 101 papers that have together received 1.4k indexed citations. Recurring topics across this work include HIV/AIDS Research and Interventions (42 papers), Adolescent Sexual and Reproductive Health (27 papers), HIV, Drug Use, Sexual Risk (24 papers), Opioid Use Disorder Treatment (20 papers), Substance Abuse Treatment and Outcomes (11 papers), Global Maternal and Child Health (11 papers), Prenatal Substance Exposure Effects (8 papers) and Genital Health and Disease (8 papers). The work is most often cited by research in Infectious Diseases (579 citations), General Health Professions (524 citations), Biological Psychiatry (39 citations), Virology (62 citations) and Public Health, Environmental and Occupational Health (379 citations). Ryan Cook has collaborated with scholars based in United States, Zambia and South Africa. Frequent co-authors include Stephen M. Weiss, Deborah L. Jones, Deborah L. Jones, Karl Peltzer, Ndashi Chitalu, P. Todd Korthuis, Steven Shoptaw, Violeta J. Rodriguez, Drenna Waldrop‐Valverde and Viviene A. Temple. Their work appears in journals such as AIDS and Behavior, Journal of the International Association of Providers of AIDS Care (JIAPAC), Drug and Alcohol Dependence, AIDS Care and Addiction.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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