Welcome

Welcome to the Principles and Practice of Clinical Research Journal. This is an Official journal of the Principles and Practice of Clinical Research program affiliated to the ECPE Harvard TH Chan School of Public Health and an Official Journal of the Scala Institute Association. The Principles and Practice of Clinical Research is journal dedicated to disseminating cutting-edge clinical research evidence. As a peer-reviewed scientific journal, we aim to foster the exchange of knowledge among researchers, academicians, and professionals. Globalization has contributed significantly to the dissemination of information in different areas of knowledge. Scientific papers are therefore the way to contribute to this global debate and advance in science. 

PPCR journal will therefore contribute to disseminate the latest research and updates on clinical research.

PPCR journal aims to provide a medium for the publication of scientific articles of high quality, thus promoting the work and training of clinical researchers globally. 

This is a Free Open Access Journal, it is initially expected to be quarterly and open for new submissions.

Send your scientific article!

Check out the rules for submission. As the journal aims to be an international publication, all information and article submission should be formatted in English.

Regards,


Editor-in-Chief:
 
Felipe Fregni + Seguir Algo deu errado. Tente fazer sua solicitação  novamente mais tarde. OK Livros de Felipe Fregni 1 61 1 The Questions and  Answers Book on Statistics for Clinical Researchers: 262 questions for  deeper statistical The Cartoon Guide to ...
Professor Felipe Fregni, MD, PhD, MMSc, MPH

Managing Editors:
 
Mustafa Reha Dodurgali, MD

Online ISSN: 2378-1890

Metrics:
H-index - 3

Indexed in:
Google Scholar
Science Gate -  https://www.sciencegate.app/source/1713572797

License: CC BY 4.0
Copyright – Dustin Tyler Joyce

CALL FOR PAPERS - SPECIAL ISSUE: NEUROMODULATION

2020-07-31

CALL FOR PAPERS (Deadline: November 2020)

Special Issue: “Neuromodulation in Adult and Child Psychiatry, Neurology, Rehabilitation, and Neuroscience Research”

As the neuromodulation field continues to expand, with increasing evidence of its potential, updating itself with the passing of time with new technology, wearable smaller devices, remote-controlled devices, and new behavioral techniques, further research is necessary to establish its efficacy and safety as formal therapeutic options for different conditions. Therefore, we are creating this special issue to boost this needed science progress together with the XII International Neuromodulation Symposium.

This call for papers includes, but is not limited, to the following topics:

  • Neuromodulation in healthy population
  • Neuromodulation for neurological disorders
  • Neuromodulation and treatment of psychiatric conditions
  • Invasive and non-invasive techniques
  • Central and peripheral stimulation, transcranial direct current stimulation, transcranial magnetic stimulation, transcutaneous electrical nerve stimulation, etc.
  • Mindfulness, meditation, neurofeedback as techniques of neuromodulation
  • Neuromodulation in neuroscience research
  • Neuromodulation in rehabilitation research
  • Neuromodulation in neurosurgery

For author’s information please see the following link: https://journal.ppcr.org/index.php/ppcrjournal/special

Vol. 11 No. 2 (2025): Principles and Practice of Clinical Research

Published: 2025-09-26

Restoring Guidelines: EBM-X to Bring Critical Thinking and Humility Back to Evidence-Based Medicine

Lisbeth Martinez, Lucas Mena, Beatriz Cubilhas, Danilo Monteiro, Andre Canteri, Felipe Fregni

Modernizing the Pathway for Non-Opioid Analgesics

Bassel Almarie, Mustafa Reha Dodurgali, Felipe Fregni

Impact of Physical Activity Level on Memory in the Older Adult Population in the United States: A Cross-Sectional Study

Alice Liriano, Ana Isabella Bencosme, Angélica Furzán, Bruno Cateb Resende de Oliveira, Carla Arias, Carolina Matté Dagostini, Claudia Meireles, Daniel Musse Gomes, Daniela Jorquera, David Moros, Erlando Mendez, Giovanna Oliveira dos Santos, Hanan Alshareef, Jazmin Insfran, Jorge Pastrana, Komwudh Konchalard, Lucas Koji Uchiyama, Marcos Brioschi, Mario Diego Teles Correia, Marcos Rafael Ramirez Marquez, Matheus Machado Rech, Mayra Muñoz, Natalia Rodriguez, Nelia Sanchez-Crespo, Nicole Beatriz Gonçalez Mannis, Olumide Adeniyi, Pascal Gaechter, Rodrigo Mariano, Silvia Castro Piedra, Tatiana Dus

Association Between Physical Activity and Depression among Women: An Analysis of NHANES 2017–2018 Data

Yazmin Alejandra Heredia Allegretti, Miguel Miranda, Tadeus Luis Lopez Ulloa, Seunghyun Kim, Yasmin Azevedo Elias, Issbah Rma, Federico Antillon-Klussmann, Débora Pinheiro Xavier, Matías Deck Labra, Bruno César Rodrigues do Amaral, Rodas Annose, María Alejandra Garza Ledezma, Sofia Teixeira Prates de Oliveira, Daniela Lorena Alvarado Rodriguez, Nadine Alejandra Aranis Seguic, Alvaro Lopes de Oliveira, Amanda Querino Andrade Viana, David Abalovich, Fabiane Barbero Klem, Gabriella Bezerra dos Santos, Isabela Castaneda, Johan Antonio De La Rosa Laureano, Lucas Fernando Uratani, Marcia Beatriz Oliveira de Sousa, Maria Yemane

Dietary Zinc and Vitamin D Intake and Diabetes Risk in Older U.S. Adults: NHANES 2017–2018

Ana Derzi, Andressa Masson, Carla Chavarria, Caterina Paiva, Cristiane Paganoti, Daniel Abad, Daniella Audi, Dermeval Neto, Dominique Schakel, Elianet Castillo, Felipe Cordova, Fernanda Malta, Helio Grullon, Jose Fermin, Karen Bedirian, Kendya Reyes, Mobolaji Jaiyesimi, Nicol Ortega, Paula Sotelo, Santiago Pastrana-Brandes, Tomas Marques, Vanessa Lessa, Stefania Zapata, Tomas Mansur

Exploring the Link Between Hepatitis A and B Vaccination and Social Support in the US Population: Insights from the NHANES 2005-2006 Cohort

Daniel Bancovsky, Manjushree Shastry, Martina Caccamo, Omar E. Vasquez-Perez, Merce Avellanet, Kumud Chapagain, Rebecca Soares, Magali Coyoy, Hoang Nguyen, Juliana Calit, Asma Qudayr, Rintu Sharma, Cynthia L. P. de Borborema, Sebastine Oiwoh, Jorge Alave, Beatrice Dalbianco, Maria Antonieta Lopes, Ricardo E. Nunez-Rocha, Maria Magalhaes, Faiez Alsatou, Felipe Duarte, Jessica Rodriguez, Ilgin Genc, Walter Ramos, Fabricio Kleber, Patricia Rioja, Ignacio Montealegre, Isabel Cabral, Luiz Viola, Barbara Grohmann, Yoldyz Huynh, Lucas Vidoto, Arantxa Ramirez, Anny Christina Chin, Alessandra Carvalho

Adequate Zinc Intake Is Associated with a Lower Risk of Childhood Obesity: Findings From NHANES 2017-2018

María Alejandra Rodríguez Brilla, Camila María Martínez Marte, Natasha Carvalho Pandolfi, Kaliana Nascimento, Gilberto Perez Rodriguez Garcia, Belen Rivera, Anna Carolyna Gianlorenco, Nicole Nakousi-Capurro, Ewerton Alves Portela dos Santos, Kasiemobi Eberechukwu Uchime, Tatiane Aparecida de Miranda, Gabriella Moreira Requião, Luciana Valentina Olivera González, Eneidy Pina, Qudus Olajide Lawal, Tamara Zompa, Gabriel Sant'Ana Carrijo, Iyanuoluwa O. Ojo, Mutwakil Elbidiari, Bruno Francisco Buzetti Spinelli, Luiz Fernando Mantovani, Marília Aparecida Silva Oliveira Machado, Ana Beatriz Ferreira Rolim, Danilo Hantschick Fernandes Monteiro, Arthur Andrade Braga, Wilson Fandino, Karla Loureiro Loss

Association between Zinc and Vitamin D Intake and Obesity among Women: A Cross-Sectional Analysis of NHANES 2017-2018

Andres Soto Rodríguez, Andrei Shanchev, Pamela Yanet Gil Galleguillos, Beatriz Cubilhas, Raissa Carvalho, Taciana Baez, Giulia Cenci, Carlos Alberto Vergara Ascenzo, Cristy Tavarez, Felipe Martinez, Leo Peña, Diego Saa, Martina Donoso, Saheed Oyedele, Katherine Amaro, Marcos Amstalden Barros, Simone Barbosa, Ana Diaz, Sharif Folorunso, Tatiana Gatilova, Patricia Leite, Niurkiss Mallen, Cinthia Minatel, Carol Moreno, Gabriel Sakaya, Mery Terreno, Carolina Uribe, Adela Yip, Jinhui Peng, Veronica Posse
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