Gregorio Barrio

6.0k total citations · 2 hit papers
145 papers, 4.7k citations indexed

About

Gregorio Barrio is a scholar working on Epidemiology, Public Health, Environmental and Occupational Health and Toxicology. According to data from OpenAlex, Gregorio Barrio has authored 145 papers receiving a total of 4.7k indexed citations (citations by other indexed papers that have themselves been cited), including 93 papers in Epidemiology, 44 papers in Public Health, Environmental and Occupational Health and 36 papers in Toxicology. Recurrent topics in Gregorio Barrio's work include HIV, Drug Use, Sexual Risk (59 papers), Substance Abuse Treatment and Outcomes (47 papers) and Opioid Use Disorder Treatment (38 papers). Gregorio Barrio is often cited by papers focused on HIV, Drug Use, Sexual Risk (59 papers), Substance Abuse Treatment and Outcomes (47 papers) and Opioid Use Disorder Treatment (38 papers). Gregorio Barrio collaborates with scholars based in Spain, United States and United Kingdom. Gregorio Barrio's co-authors include Luís de la Fuente, María J. Bravo, Luis Sordo, Enrique Regidor, Blanca Iciar Indave, Louisa Degenhardt, Roberto Pastor‐Barriuso, Lucas Wiessing, Marica Ferri and M. Teresa Brugal and has published in prestigious journals such as The Lancet, PLoS ONE and Hepatology.

In The Last Decade

Gregorio Barrio

142 papers receiving 4.5k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Mortality risk during and after opioid substitution treatment: systematic review and meta-analysis of cohort studies

2017 1.3k citations Luis Sordo, Gregorio Barrio et al. profile →
[Population reference values of the Spanish version of the Health Questionnaire SF-36].

1998 464 citations Jordi Alonso, Enrique Regidor et al. PubMed profile →

Peers

Countries citing papers authored by Gregorio Barrio

Since Specialization

Citations

This map shows the geographic impact of Gregorio Barrio'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 Gregorio Barrio with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Gregorio Barrio more than expected).

Fields of papers citing papers by Gregorio Barrio

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Gregorio Barrio. 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 Gregorio Barrio. The network helps show where Gregorio Barrio may publish in the future.

Co-authorship network of co-authors of Gregorio Barrio

This figure shows the co-authorship network connecting the top 25 collaborators of Gregorio Barrio. A scholar is included among the top collaborators of Gregorio Barrio based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Gregorio Barrio. Gregorio Barrio is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Changing trends in drug overdose mortality in Spain, 2001–2022 2025 ·Addiction ·(unknown), (unknown), (unknown), Gregorio Barrio, María José Belza, (unknown), Enrique Regidor	0
2	Excess Mortality During 2020 in Spain: The Most Affected Population, Age, and Educational Group by the COVID-19 Pandemic 2024 ·Disaster Medicine and Public Health Preparedness ·José Pulido, Gregorio Barrio, (unknown), (unknown), (unknown), Lucía Cea Soriano, (unknown), (unknown), Alberto Mateo‐Urdiales, Elena Ronda, David Martı́nez, Lourdes Lostao, María José Belza, Enrique Regidor	2
3	Abrupt peaks in perceived risk of occasional drug use after changing the question order in a repeated self-administered survey 2023 ·Frontiers in Public Health ·(unknown), Gregorio Barrio, Juan Hoyos, María José Belza, Enrique Regidor, (unknown), (unknown), (unknown), José Pulido	1
4	Free Access to Direct-Acting Antivirals in Spain: More Favorable Impact on Hepatitis C Mortality Among Highly Educated People 2022 ·Clinical Infectious Diseases ·(unknown), Enrique Regidor, (unknown), José Pulido, (unknown), Gregorio Barrio, María José Belza	5
5	Estimating the Prevalence of Recreational Opioid Use in Spain Using a Multiplier Method 2022 ·International Journal of Environmental Research and Public Health ·José Pulido, Albert Sánchez‐Niubò, (unknown), Juan Hoyos, Gregorio Barrio, María José Belza, Lucía Cea Soriano, Ariadna Angulo-Brunet, Luis Sordo	1
6	Educational Gradients in Drinking Amount and Heavy Episodic Drinking among Working-Age Men and Women in Spain 2022 ·International Journal of Environmental Research and Public Health ·(unknown), Gregorio Barrio, (unknown), (unknown), José Pulido, María José Belza, Enrique Regidor	4
7	Avoidable mortality for causes amenable to medical care and suicide in physicians in Spain 2021 ·International Archives of Occupational and Environmental Health ·(unknown), (unknown), María José Belza, Elena Ronda, Gregorio Barrio, Enrique Regidor	3
8	Favorable impact in hepatitis C–related mortality following free access to direct‐acting antivirals in Spain 2021 ·Hepatology ·(unknown), (unknown), (unknown), María José Belza, Elena Ronda, Gregorio Barrio, Enrique Regidor	16
9	The limits of measuring binge drinking prevalence for epidemiological surveillance: An example from Spain 2021 ·Drug and Alcohol Dependence ·(unknown), Gregorio Barrio, José Pulido, (unknown), María José Belza, Enrique Regidor	2
10	No effect of the Penalty Point System on road traffic accident mortality among men with a high socioeconomic status in Spain 2021 ·Accident Analysis & Prevention ·José Pulido, (unknown), Fernando Vallejo, Eladio Jiménez-Mejías, Juan Hoyos, Enrique Regidor, Gregorio Barrio	3
11	Changes in directly alcohol-attributable mortality during the great recession by employment status in Spain: a population cohort of 22 million people 2017 ·Journal of Epidemiology & Community Health ·Ignacio Alonso Bilbao, Fernando Vallejo, Enrique Regidor, María José Belza, Luis Sordo, Laura Otero‐García, Gregorio Barrio	12
12	Effect of ageing and time since first heroin and cocaine use on mortality from external and natural causes in a Spanish cohort of drug users 2017 ·International Journal of Drug Policy ·(unknown), M. Teresa Brugal, Gregorio Barrio, (unknown), Marina Bosque‐Prous, Oleguer Parés‐Badell, Luís de la Fuente	4
13	Mortality risk factors and excess mortality in a cohort of cocaine users admitted to drug treatment in Spain 2013 ·Journal of Substance Abuse Treatment ·Luís de la Fuente, (unknown), Albert Espelt, Gregorio Barrio, Anna Ortiz Guitart, María J. Bravo, M. Teresa Brugal	27
14	Estimating the prevalence of drug injection using a multiplier method based on a register of new HIV diagnoses 2010 ·European Journal of Public Health ·Gregorio Barrio, Jesús Oliva, María J. Bravo, (unknown), Antònia Domingo‐Salvany, (unknown)	9
15	Severity of Dependence Scale as a Diagnostic Tool for Heroin and Cocaine Dependence 2009 ·European Addiction Research ·Francisco González‐Sáiz, Antònia Domingo‐Salvany, Gregorio Barrio, Albert Sánchez‐Niubò, M. Teresa Brugal, Luís de la Fuente, Jordi Alonso	47
16	Prevalence of and Risk Factors for Hepatitis B Virus Infection among Street-Recruited Young Injection and Non-Injection Heroin Users in Barcelona, Madrid and Seville 2008 ·European Addiction Research ·Fernando Vallejo, Carlos Toro, Luís de la Fuente, M. Teresa Brugal, Vincent Soriano, Teresa C. Silva, María J. Bravo, (unknown), Gregorio Barrio	14
17	Más de treinta años de drogas ilegales en España: una amarga historia con algunos consejos para el futuro 2006 ·Revista Española de Salud Pública ·Luís de la Fuente, M. Teresa Brugal, Antònia Domingo‐Salvany, María J. Bravo, (unknown), Gregorio Barrio	39
18	[The prevalence of human immunodeficiency virus infection and the risk behaviors in the heroin addicts of Barcelona, Madrid and Seville: an example of the advantages of centering studies on addicts and not just on intravenous users]. 1999 ·PubMed ·Luís de la Fuente, (unknown), Carolyn R. Lew, Gregorio Barrio, Vincent Soriano, Luis Royuela	16
19	Non-fatal injuries and the use of psychoactive drugs among young adults in Spain 1996 ·Drug and Alcohol Dependence ·Enrique Regidor, Gregorio Barrio, Luís de la Fuente, (unknown)	14
20	Consumo de drogas en España: fuentes de información y evolución durante el periodo 1984-1990 1991 ·José Sánchez–Payá, (unknown), (unknown), Gregorio Barrio	3

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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